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Merge branch 'ib-mfd-regulator-gpio-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into devel

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This commit is contained in:
Linus Walleij 2016-03-09 17:40:37 +07:00
commit 0bae2f1732
279 changed files with 4566 additions and 3058 deletions
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1
.mailmap
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@ -21,6 +21,7 @@ Andrey Ryabinin <ryabinin.a.a@gmail.com> <a.ryabinin@samsung.com>
Andrew Morton <akpm@linux-foundation.org>
Andrew Vasquez <andrew.vasquez@qlogic.com>
Andy Adamson <andros@citi.umich.edu>
Antonio Ospite <ao2@ao2.it> <ao2@amarulasolutions.com>
Archit Taneja <archit@ti.com>
Arnaud Patard <arnaud.patard@rtp-net.org>
Arnd Bergmann <arnd@arndb.de>

2
Documentation/Intel-IOMMU.txt
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@ -3,7 +3,7 @@ Linux IOMMU Support
The architecture spec can be obtained from the below location.
http://www.intel.com/technology/virtualization/
http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/vt-directed-io-spec.pdf
This guide gives a quick cheat sheet for some basic understanding.

50
Documentation/devicetree/bindings/mfd/tps65912.txt Normal file
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@ -0,0 +1,50 @@
* TPS65912 Power Management Integrated Circuit bindings
Required properties:
- compatible : Should be "ti,tps65912".
- reg : Slave address or chip select number (I2C / SPI).
- interrupt-parent : The parent interrupt controller.
- interrupts : The interrupt line the device is connected to.
- interrupt-controller : Marks the device node as an interrupt controller.
- #interrupt-cells : The number of cells to describe an IRQ, should be 2.
The first cell is the IRQ number.
The second cell is the flags, encoded as trigger
masks from ../interrupt-controller/interrupts.txt.
- gpio-controller : Marks the device node as a GPIO Controller.
- #gpio-cells : Should be two. The first cell is the pin number and
the second cell is used to specify flags.
See ../gpio/gpio.txt for more information.
- regulators: : List of child nodes that specify the regulator
initialization data. Child nodes must be named
after their hardware counterparts: dcdc[1-4] and
ldo[1-10]. Each child nodes is defined using the
standard binding for regulators.
Example:
pmic: tps65912@2d {
compatible = "ti,tps65912";
reg = <0x2d>;
interrupt-parent = <&gpio1>;
interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
#interrupt-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
regulators {
dcdc1 {
regulator-name = "vdd_core";
regulator-min-microvolt = <912000>;
regulator-max-microvolt = <1144000>;
regulator-boot-on;
regulator-always-on;
};
ldo1 {
regulator-name = "ldo1";
regulator-min-microvolt = <1900000>;
regulator-max-microvolt = <1900000>;
};
};
};

2
Documentation/virtual/kvm/api.txt
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@ -3025,7 +3025,7 @@ len must be a multiple of sizeof(struct kvm_s390_irq). It must be > 0
and it must not exceed (max_vcpus + 32) * sizeof(struct kvm_s390_irq),
which is the maximum number of possibly pending cpu-local interrupts.
4.90 KVM_SMI
4.96 KVM_SMI
Capability: KVM_CAP_X86_SMM
Architectures: x86

2
Makefile
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@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 5
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc2
NAME = Blurry Fish Butt
# *DOCUMENTATION*

9
arch/arm/boot/compressed/Makefile
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@ -106,6 +106,15 @@ ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
endif
# -fstack-protector-strong triggers protection checks in this code,
# but it is being used too early to link to meaningful stack_chk logic.
nossp_flags := $(call cc-option, -fno-stack-protector)
CFLAGS_atags_to_fdt.o := $(nossp_flags)
CFLAGS_fdt.o := $(nossp_flags)
CFLAGS_fdt_ro.o := $(nossp_flags)
CFLAGS_fdt_rw.o := $(nossp_flags)
CFLAGS_fdt_wip.o := $(nossp_flags)
ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
asflags-y := -DZIMAGE

1
arch/arm/include/uapi/asm/unistd.h
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@ -417,6 +417,7 @@
#define __NR_userfaultfd (__NR_SYSCALL_BASE+388)
#define __NR_membarrier (__NR_SYSCALL_BASE+389)
#define __NR_mlock2 (__NR_SYSCALL_BASE+390)
#define __NR_copy_file_range (__NR_SYSCALL_BASE+391)
/*
* The following SWIs are ARM private.

1
arch/arm/kernel/calls.S
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@ -400,6 +400,7 @@
CALL(sys_userfaultfd)
CALL(sys_membarrier)
CALL(sys_mlock2)
CALL(sys_copy_file_range)
#ifndef syscalls_counted
.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
#define syscalls_counted

2
arch/arm64/Makefile
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@ -27,6 +27,8 @@ $(warning LSE atomics not supported by binutils)
endif
KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr)
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
KBUILD_AFLAGS += $(lseinstr)
ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)

42
arch/arm64/configs/defconfig
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@ -16,7 +16,6 @@ CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_MEMCG_KMEM=y
CONFIG_CGROUP_HUGETLB=y
# CONFIG_UTS_NS is not set
# CONFIG_IPC_NS is not set
@ -37,15 +36,13 @@ CONFIG_ARCH_EXYNOS7=y
CONFIG_ARCH_LAYERSCAPE=y
CONFIG_ARCH_HISI=y
CONFIG_ARCH_MEDIATEK=y
CONFIG_ARCH_QCOM=y
CONFIG_ARCH_ROCKCHIP=y
CONFIG_ARCH_SEATTLE=y
CONFIG_ARCH_RENESAS=y
CONFIG_ARCH_R8A7795=y
CONFIG_ARCH_STRATIX10=y
CONFIG_ARCH_TEGRA=y
CONFIG_ARCH_TEGRA_132_SOC=y
CONFIG_ARCH_TEGRA_210_SOC=y
CONFIG_ARCH_QCOM=y
CONFIG_ARCH_SPRD=y
CONFIG_ARCH_THUNDER=y
CONFIG_ARCH_UNIPHIER=y
@ -54,14 +51,19 @@ CONFIG_ARCH_XGENE=y
CONFIG_ARCH_ZYNQMP=y
CONFIG_PCI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_IOV=y
CONFIG_PCI_RCAR_GEN2_PCIE=y
CONFIG_PCI_HOST_GENERIC=y
CONFIG_PCI_XGENE=y
CONFIG_SMP=y
CONFIG_PCI_LAYERSCAPE=y
CONFIG_PCI_HISI=y
CONFIG_PCIE_QCOM=y
CONFIG_SCHED_MC=y
CONFIG_PREEMPT=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_CMA=y
CONFIG_XEN=y
CONFIG_CMDLINE="console=ttyAMA0"
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_COMPAT=y
@ -100,7 +102,11 @@ CONFIG_PATA_OF_PLATFORM=y
CONFIG_NETDEVICES=y
CONFIG_TUN=y
CONFIG_VIRTIO_NET=y
CONFIG_AMD_XGBE=y
CONFIG_NET_XGENE=y
CONFIG_E1000E=y
CONFIG_IGB=y
CONFIG_IGBVF=y
CONFIG_SKY2=y
CONFIG_RAVB=y
CONFIG_SMC91X=y
@ -117,25 +123,23 @@ CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_8250_MT6577=y
CONFIG_SERIAL_8250_UNIPHIER=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_SAMSUNG=y
CONFIG_SERIAL_SAMSUNG_UARTS_4=y
CONFIG_SERIAL_SAMSUNG_UARTS=4
CONFIG_SERIAL_SAMSUNG_CONSOLE=y
CONFIG_SERIAL_TEGRA=y
CONFIG_SERIAL_SH_SCI=y
CONFIG_SERIAL_SH_SCI_NR_UARTS=11
CONFIG_SERIAL_SH_SCI_CONSOLE=y
CONFIG_SERIAL_TEGRA=y
CONFIG_SERIAL_MSM=y
CONFIG_SERIAL_MSM_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_XILINX_PS_UART=y
CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y
CONFIG_VIRTIO_CONSOLE=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
CONFIG_I2C_QUP=y
CONFIG_I2C_UNIPHIER_F=y
CONFIG_I2C_RCAR=y
CONFIG_SPI=y
CONFIG_SPI_PL022=y
@ -176,8 +180,6 @@ CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_SDHCI_TEGRA=y
CONFIG_MMC_SPI=y
CONFIG_MMC_DW=y
CONFIG_MMC_DW_IDMAC=y
CONFIG_MMC_DW_PLTFM=y
CONFIG_MMC_DW_EXYNOS=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
@ -187,28 +189,33 @@ CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_EFI=y
CONFIG_RTC_DRV_PL031=y
CONFIG_RTC_DRV_XGENE=y
CONFIG_DMADEVICES=y
CONFIG_RCAR_DMAC=y
CONFIG_QCOM_BAM_DMA=y
CONFIG_TEGRA20_APB_DMA=y
CONFIG_RCAR_DMAC=y
CONFIG_VFIO=y
CONFIG_VFIO_PCI=y
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_BALLOON=y
CONFIG_VIRTIO_MMIO=y
CONFIG_XEN_GNTDEV=y
CONFIG_XEN_GRANT_DEV_ALLOC=y
CONFIG_COMMON_CLK_CS2000_CP=y
CONFIG_COMMON_CLK_QCOM=y
CONFIG_MSM_GCC_8916=y
CONFIG_HWSPINLOCK_QCOM=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_ARM_SMMU=y
CONFIG_QCOM_SMEM=y
CONFIG_QCOM_SMD=y
CONFIG_QCOM_SMD_RPM=y
CONFIG_ARCH_TEGRA_132_SOC=y
CONFIG_ARCH_TEGRA_210_SOC=y
CONFIG_HISILICON_IRQ_MBIGEN=y
CONFIG_PHY_XGENE=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
# CONFIG_EXT3_FS_XATTR is not set
CONFIG_EXT4_FS=y
CONFIG_FANOTIFY=y
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
CONFIG_QUOTA=y
@ -239,6 +246,7 @@ CONFIG_LOCKUP_DETECTOR=y
# CONFIG_FTRACE is not set
CONFIG_MEMTEST=y
CONFIG_SECURITY=y
CONFIG_CRYPTO_ECHAINIV=y
CONFIG_CRYPTO_ANSI_CPRNG=y
CONFIG_ARM64_CRYPTO=y
CONFIG_CRYPTO_SHA1_ARM64_CE=y

21
arch/arm64/include/asm/pgtable.h
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@ -67,11 +67,11 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
#define PROT_DEFAULT (PTE_TYPE_PAGE | PTE_AF | PTE_SHARED)
#define PROT_SECT_DEFAULT (PMD_TYPE_SECT | PMD_SECT_AF | PMD_SECT_S)
#define PROT_DEVICE_nGnRnE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_ATTRINDX(MT_DEVICE_nGnRnE))
#define PROT_DEVICE_nGnRE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_ATTRINDX(MT_DEVICE_nGnRE))
#define PROT_NORMAL_NC (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_ATTRINDX(MT_NORMAL_NC))
#define PROT_NORMAL_WT (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_ATTRINDX(MT_NORMAL_WT))
#define PROT_NORMAL (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_ATTRINDX(MT_NORMAL))
#define PROT_DEVICE_nGnRnE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRnE))
#define PROT_DEVICE_nGnRE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRE))
#define PROT_NORMAL_NC (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_NC))
#define PROT_NORMAL_WT (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_WT))
#define PROT_NORMAL (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL))
#define PROT_SECT_DEVICE_nGnRE (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_DEVICE_nGnRE))
#define PROT_SECT_NORMAL (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_NORMAL))
@ -81,7 +81,7 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
#define PAGE_KERNEL __pgprot(_PAGE_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE)
#define PAGE_KERNEL_RO __pgprot(_PAGE_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_RDONLY)
#define PAGE_KERNEL_ROX __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_RDONLY)
#define PAGE_KERNEL_ROX __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_RDONLY)
#define PAGE_KERNEL_EXEC __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE)
#define PAGE_KERNEL_EXEC_CONT __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_CONT)
@ -153,6 +153,7 @@ extern struct page *empty_zero_page;
#define pte_write(pte) (!!(pte_val(pte) & PTE_WRITE))
#define pte_exec(pte) (!(pte_val(pte) & PTE_UXN))
#define pte_cont(pte) (!!(pte_val(pte) & PTE_CONT))
#define pte_user(pte) (!!(pte_val(pte) & PTE_USER))
#ifdef CONFIG_ARM64_HW_AFDBM
#define pte_hw_dirty(pte) (pte_write(pte) && !(pte_val(pte) & PTE_RDONLY))
@ -163,8 +164,6 @@ extern struct page *empty_zero_page;
#define pte_dirty(pte) (pte_sw_dirty(pte) || pte_hw_dirty(pte))
#define pte_valid(pte) (!!(pte_val(pte) & PTE_VALID))
#define pte_valid_user(pte) \
((pte_val(pte) & (PTE_VALID | PTE_USER)) == (PTE_VALID | PTE_USER))
#define pte_valid_not_user(pte) \
((pte_val(pte) & (PTE_VALID | PTE_USER)) == PTE_VALID)
#define pte_valid_young(pte) \
@ -278,13 +277,13 @@ extern void __sync_icache_dcache(pte_t pteval, unsigned long addr);
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
if (pte_valid_user(pte)) {
if (!pte_special(pte) && pte_exec(pte))
__sync_icache_dcache(pte, addr);
if (pte_valid(pte)) {
if (pte_sw_dirty(pte) && pte_write(pte))
pte_val(pte) &= ~PTE_RDONLY;
else
pte_val(pte) |= PTE_RDONLY;
if (pte_user(pte) && pte_exec(pte) && !pte_special(pte))
__sync_icache_dcache(pte, addr);
}
/*

5
arch/arm64/kernel/head.S
View File

@ -514,9 +514,14 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems
#endif
/* EL2 debug */
mrs x0, id_aa64dfr0_el1 // Check ID_AA64DFR0_EL1 PMUVer
sbfx x0, x0, #8, #4
cmp x0, #1
b.lt 4f // Skip if no PMU present
mrs x0, pmcr_el0 // Disable debug access traps
ubfx x0, x0, #11, #5 // to EL2 and allow access to
msr mdcr_el2, x0 // all PMU counters from EL1
4:
/* Stage-2 translation */
msr vttbr_el2, xzr

40
arch/arm64/kernel/image.h
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@ -64,6 +64,16 @@
#ifdef CONFIG_EFI
/*
* Prevent the symbol aliases below from being emitted into the kallsyms
* table, by forcing them to be absolute symbols (which are conveniently
* ignored by scripts/kallsyms) rather than section relative symbols.
* The distinction is only relevant for partial linking, and only for symbols
* that are defined within a section declaration (which is not the case for
* the definitions below) so the resulting values will be identical.
*/
#define KALLSYMS_HIDE(sym) ABSOLUTE(sym)
/*
* The EFI stub has its own symbol namespace prefixed by __efistub_, to
* isolate it from the kernel proper. The following symbols are legally
@ -73,25 +83,25 @@
* linked at. The routines below are all implemented in assembler in a
* position independent manner
*/
__efistub_memcmp = __pi_memcmp;
__efistub_memchr = __pi_memchr;
__efistub_memcpy = __pi_memcpy;
__efistub_memmove = __pi_memmove;
__efistub_memset = __pi_memset;
__efistub_strlen = __pi_strlen;
__efistub_strcmp = __pi_strcmp;
__efistub_strncmp = __pi_strncmp;
__efistub___flush_dcache_area = __pi___flush_dcache_area;
__efistub_memcmp = KALLSYMS_HIDE(__pi_memcmp);
__efistub_memchr = KALLSYMS_HIDE(__pi_memchr);
__efistub_memcpy = KALLSYMS_HIDE(__pi_memcpy);
__efistub_memmove = KALLSYMS_HIDE(__pi_memmove);
__efistub_memset = KALLSYMS_HIDE(__pi_memset);
__efistub_strlen = KALLSYMS_HIDE(__pi_strlen);
__efistub_strcmp = KALLSYMS_HIDE(__pi_strcmp);
__efistub_strncmp = KALLSYMS_HIDE(__pi_strncmp);
__efistub___flush_dcache_area = KALLSYMS_HIDE(__pi___flush_dcache_area);
#ifdef CONFIG_KASAN
__efistub___memcpy = __pi_memcpy;
__efistub___memmove = __pi_memmove;
__efistub___memset = __pi_memset;
__efistub___memcpy = KALLSYMS_HIDE(__pi_memcpy);
__efistub___memmove = KALLSYMS_HIDE(__pi_memmove);
__efistub___memset = KALLSYMS_HIDE(__pi_memset);
#endif
__efistub__text = _text;
__efistub__end = _end;
__efistub__edata = _edata;
__efistub__text = KALLSYMS_HIDE(_text);
__efistub__end = KALLSYMS_HIDE(_end);
__efistub__edata = KALLSYMS_HIDE(_edata);
#endif

2
arch/arm64/mm/dump.c
View File

@ -46,7 +46,7 @@ enum address_markers_idx {
PCI_START_NR,
PCI_END_NR,
MODULES_START_NR,
MODUELS_END_NR,
MODULES_END_NR,
KERNEL_SPACE_NR,
};

9
arch/arm64/mm/kasan_init.c
View File

@ -120,6 +120,7 @@ static void __init cpu_set_ttbr1(unsigned long ttbr1)
void __init kasan_init(void)
{
struct memblock_region *reg;
int i;
/*
* We are going to perform proper setup of shadow memory.
@ -155,6 +156,14 @@ void __init kasan_init(void)
pfn_to_nid(virt_to_pfn(start)));
}
/*
* KAsan may reuse the contents of kasan_zero_pte directly, so we
* should make sure that it maps the zero page read-only.
*/
for (i = 0; i < PTRS_PER_PTE; i++)
set_pte(&kasan_zero_pte[i],
pfn_pte(virt_to_pfn(kasan_zero_page), PAGE_KERNEL_RO));
memset(kasan_zero_page, 0, PAGE_SIZE);
cpu_set_ttbr1(__pa(swapper_pg_dir));
flush_tlb_all();

3
arch/arm64/mm/pageattr.c
View File

@ -57,6 +57,9 @@ static int change_memory_common(unsigned long addr, int numpages,
if (end < MODULES_VADDR || end >= MODULES_END)
return -EINVAL;
if (!numpages)
return 0;
data.set_mask = set_mask;
data.clear_mask = clear_mask;

12
arch/arm64/mm/proc-macros.S
View File

@ -84,3 +84,15 @@
b.lo 9998b
dsb \domain
.endm
/*
* reset_pmuserenr_el0 - reset PMUSERENR_EL0 if PMUv3 present
*/
.macro reset_pmuserenr_el0, tmpreg
mrs \tmpreg, id_aa64dfr0_el1 // Check ID_AA64DFR0_EL1 PMUVer
sbfx \tmpreg, \tmpreg, #8, #4
cmp \tmpreg, #1 // Skip if no PMU present
b.lt 9000f
msr pmuserenr_el0, xzr // Disable PMU access from EL0
9000:
.endm

4
arch/arm64/mm/proc.S
View File

@ -117,7 +117,7 @@ ENTRY(cpu_do_resume)
*/
ubfx x11, x11, #1, #1
msr oslar_el1, x11
msr pmuserenr_el0, xzr // Disable PMU access from EL0
reset_pmuserenr_el0 x0 // Disable PMU access from EL0
mov x0, x12
dsb nsh // Make sure local tlb invalidation completed
isb
@ -154,7 +154,7 @@ ENTRY(__cpu_setup)
msr cpacr_el1, x0 // Enable FP/ASIMD
mov x0, #1 << 12 // Reset mdscr_el1 and disable
msr mdscr_el1, x0 // access to the DCC from EL0
msr pmuserenr_el0, xzr // Disable PMU access from EL0
reset_pmuserenr_el0 x0 // Disable PMU access from EL0
/*
* Memory region attributes for LPAE:
*

11
arch/mips/bcm63xx/nvram.c
View File

@ -19,6 +19,8 @@
#include <bcm63xx_nvram.h>
#define BCM63XX_DEFAULT_PSI_SIZE 64
static struct bcm963xx_nvram nvram;
static int mac_addr_used;
@ -85,3 +87,12 @@ int bcm63xx_nvram_get_mac_address(u8 *mac)
return 0;
}
EXPORT_SYMBOL(bcm63xx_nvram_get_mac_address);
int bcm63xx_nvram_get_psi_size(void)
{
if (nvram.psi_size > 0)
return nvram.psi_size;
return BCM63XX_DEFAULT_PSI_SIZE;
}
EXPORT_SYMBOL(bcm63xx_nvram_get_psi_size);

2
arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h
View File

@ -30,4 +30,6 @@ u8 *bcm63xx_nvram_get_name(void);
*/
int bcm63xx_nvram_get_mac_address(u8 *mac);
int bcm63xx_nvram_get_psi_size(void);
#endif /* BCM63XX_NVRAM_H */

4
arch/powerpc/include/asm/book3s/64/hash.h
View File

@ -50,7 +50,9 @@
* set of bits not changed in pmd_modify.
*/
#define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
_PAGE_ACCESSED | _PAGE_THP_HUGE)
_PAGE_ACCESSED | _PAGE_THP_HUGE | _PAGE_PTE | \
_PAGE_SOFT_DIRTY)
#ifdef CONFIG_PPC_64K_PAGES
#include <asm/book3s/64/hash-64k.h>

1
arch/powerpc/include/asm/book3s/64/pgtable.h
View File

@ -223,7 +223,6 @@ static inline pte_t *pmdp_ptep(pmd_t *pmd)
#define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd))
#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
#define pmd_young(pmd) pte_young(pmd_pte(pmd))
#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
#define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd)))
#define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
#define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))

3
arch/powerpc/include/asm/kvm_host.h
View File

@ -38,8 +38,7 @@
#define KVM_MAX_VCPUS NR_CPUS
#define KVM_MAX_VCORES NR_CPUS
#define KVM_USER_MEM_SLOTS 32
#define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
#define KVM_USER_MEM_SLOTS 512
#ifdef CONFIG_KVM_MMIO
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1

1
arch/powerpc/include/asm/systbl.h
View File

@ -383,3 +383,4 @@ SYSCALL(ni_syscall)
SYSCALL(ni_syscall)
SYSCALL(ni_syscall)
SYSCALL(mlock2)
SYSCALL(copy_file_range)

2
arch/powerpc/include/asm/unistd.h
View File

@ -12,7 +12,7 @@
#include <uapi/asm/unistd.h>
#define NR_syscalls 379
#define NR_syscalls 380
#define __NR__exit __NR_exit

1
arch/powerpc/include/uapi/asm/unistd.h
View File

@ -389,5 +389,6 @@
#define __NR_userfaultfd 364
#define __NR_membarrier 365
#define __NR_mlock2 378
#define __NR_copy_file_range 379
#endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */

35
arch/powerpc/kernel/eeh_pe.c
View File

@ -883,32 +883,29 @@ void eeh_pe_restore_bars(struct eeh_pe *pe)
const char *eeh_pe_loc_get(struct eeh_pe *pe)
{
struct pci_bus *bus = eeh_pe_bus_get(pe);
struct device_node *dn = pci_bus_to_OF_node(bus);
struct device_node *dn;
const char *loc = NULL;
if (!dn)
goto out;
while (bus) {
dn = pci_bus_to_OF_node(bus);
if (!dn) {
bus = bus->parent;
continue;
}
/* PHB PE or root PE ? */
if (pci_is_root_bus(bus)) {
loc = of_get_property(dn, "ibm,loc-code", NULL);
if (!loc)
if (pci_is_root_bus(bus))
loc = of_get_property(dn, "ibm,io-base-loc-code", NULL);
if (loc)
goto out;
else
loc = of_get_property(dn, "ibm,slot-location-code",
NULL);
/* Check the root port */
dn = dn->child;
if (!dn)
goto out;
if (loc)
return loc;
bus = bus->parent;
}
loc = of_get_property(dn, "ibm,loc-code", NULL);
if (!loc)
loc = of_get_property(dn, "ibm,slot-location-code", NULL);
out:
return loc ? loc : "N/A";
return "N/A";
}
/**

28
arch/powerpc/kernel/misc_64.S
View File

@ -701,31 +701,3 @@ _GLOBAL(kexec_sequence)
li r5,0
blr /* image->start(physid, image->start, 0); */
#endif /* CONFIG_KEXEC */
#ifdef CONFIG_MODULES
#if defined(_CALL_ELF) && _CALL_ELF == 2
#ifdef CONFIG_MODVERSIONS
.weak __crc_TOC.
.section "___kcrctab+TOC.","a"
.globl __kcrctab_TOC.
__kcrctab_TOC.:
.llong __crc_TOC.
#endif
/*
* Export a fake .TOC. since both modpost and depmod will complain otherwise.
* Both modpost and depmod strip the leading . so we do the same here.
*/
.section "__ksymtab_strings","a"
__kstrtab_TOC.:
.asciz "TOC."
.section "___ksymtab+TOC.","a"
/* This symbol name is important: it's used by modpost to find exported syms */
.globl __ksymtab_TOC.
__ksymtab_TOC.:
.llong 0 /* .value */
.llong __kstrtab_TOC.
#endif /* ELFv2 */
#endif /* MODULES */

12
arch/powerpc/kernel/module_64.c
View File

@ -326,7 +326,10 @@ static void dedotify_versions(struct modversion_info *vers,
}
}
/* Undefined symbols which refer to .funcname, hack to funcname (or .TOC.) */
/*
* Undefined symbols which refer to .funcname, hack to funcname. Make .TOC.
* seem to be defined (value set later).
*/
static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
{
unsigned int i;
@ -334,8 +337,11 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
for (i = 1; i < numsyms; i++) {
if (syms[i].st_shndx == SHN_UNDEF) {
char *name = strtab + syms[i].st_name;
if (name[0] == '.')
if (name[0] == '.') {
if (strcmp(name+1, "TOC.") == 0)
syms[i].st_shndx = SHN_ABS;
memmove(name, name+1, strlen(name));
}
}
}
}
@ -351,7 +357,7 @@ static Elf64_Sym *find_dot_toc(Elf64_Shdr *sechdrs,
numsyms = sechdrs[symindex].sh_size / sizeof(Elf64_Sym);
for (i = 1; i < numsyms; i++) {
if (syms[i].st_shndx == SHN_UNDEF
if (syms[i].st_shndx == SHN_ABS
&& strcmp(strtab + syms[i].st_name, "TOC.") == 0)
return &syms[i];
}

3
arch/powerpc/kvm/book3s_64_mmu.c
View File

@ -377,15 +377,12 @@ no_seg_found:
static void kvmppc_mmu_book3s_64_slbmte(struct kvm_vcpu *vcpu, u64 rs, u64 rb)
{
struct kvmppc_vcpu_book3s *vcpu_book3s;
u64 esid, esid_1t;
int slb_nr;
struct kvmppc_slb *slbe;
dprintk("KVM MMU: slbmte(0x%llx, 0x%llx)\n", rs, rb);
vcpu_book3s = to_book3s(vcpu);
esid = GET_ESID(rb);
esid_1t = GET_ESID_1T(rb);
slb_nr = rb & 0xfff;

18
arch/powerpc/kvm/book3s_hv.c
View File

@ -833,6 +833,24 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->stat.sum_exits++;
/*
* This can happen if an interrupt occurs in the last stages
* of guest entry or the first stages of guest exit (i.e. after
* setting paca->kvm_hstate.in_guest to KVM_GUEST_MODE_GUEST_HV
* and before setting it to KVM_GUEST_MODE_HOST_HV).
* That can happen due to a bug, or due to a machine check
* occurring at just the wrong time.
*/
if (vcpu->arch.shregs.msr & MSR_HV) {
printk(KERN_EMERG "KVM trap in HV mode!\n");
printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n",
vcpu->arch.trap, kvmppc_get_pc(vcpu),
vcpu->arch.shregs.msr);
kvmppc_dump_regs(vcpu);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
run->hw.hardware_exit_reason = vcpu->arch.trap;
return RESUME_HOST;
}
run->exit_reason = KVM_EXIT_UNKNOWN;
run->ready_for_interrupt_injection = 1;
switch (vcpu->arch.trap) {

4
arch/powerpc/kvm/book3s_hv_rmhandlers.S
View File

@ -2153,7 +2153,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
/* Emulate H_SET_DABR/X on P8 for the sake of compat mode guests */
2: rlwimi r5, r4, 5, DAWRX_DR | DAWRX_DW
rlwimi r5, r4, 1, DAWRX_WT
rlwimi r5, r4, 2, DAWRX_WT
clrrdi r4, r4, 3
std r4, VCPU_DAWR(r3)
std r5, VCPU_DAWRX(r3)
@ -2404,6 +2404,8 @@ machine_check_realmode:
* guest as machine check causing guest to crash.
*/
ld r11, VCPU_MSR(r9)
rldicl. r0, r11, 64-MSR_HV_LG, 63 /* check if it happened in HV mode */
bne mc_cont /* if so, exit to host */
andi. r10, r11, MSR_RI /* check for unrecoverable exception */
beq 1f /* Deliver a machine check to guest */
ld r10, VCPU_PC(r9)

20
arch/powerpc/kvm/powerpc.c
View File

@ -919,21 +919,17 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
r = -ENXIO;
break;
}
vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
break;
case KVM_REG_PPC_VSCR:
if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
r = -ENXIO;
break;
}
vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
break;
case KVM_REG_PPC_VRSAVE:
if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
r = -ENXIO;
break;
}
vcpu->arch.vrsave = set_reg_val(reg->id, val);
val = get_reg_val(reg->id, vcpu->arch.vrsave);
break;
#endif /* CONFIG_ALTIVEC */
default:
@ -974,17 +970,21 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
r = -ENXIO;
break;
}
val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
break;
case KVM_REG_PPC_VSCR:
if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
r = -ENXIO;
break;
}
val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
break;
case KVM_REG_PPC_VRSAVE:
val = get_reg_val(reg->id, vcpu->arch.vrsave);
if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
r = -ENXIO;
break;
}
vcpu->arch.vrsave = set_reg_val(reg->id, val);
break;
#endif /* CONFIG_ALTIVEC */
default:

4
arch/powerpc/mm/mem.c
View File

@ -560,12 +560,12 @@ subsys_initcall(add_system_ram_resources);
*/
int devmem_is_allowed(unsigned long pfn)
{
if (page_is_rtas_user_buf(pfn))
return 1;
if (iomem_is_exclusive(PFN_PHYS(pfn)))
return 0;
if (!page_is_ram(pfn))
return 1;
if (page_is_rtas_user_buf(pfn))
return 1;
return 0;
}
#endif /* CONFIG_STRICT_DEVMEM */

2
arch/powerpc/perf/power8-pmu.c
View File

@ -816,7 +816,7 @@ static struct power_pmu power8_pmu = {
.get_constraint = power8_get_constraint,
.get_alternatives = power8_get_alternatives,
.disable_pmc = power8_disable_pmc,
.flags = PPMU_HAS_SSLOT | PPMU_HAS_SIER | PPMU_ARCH_207S,
.flags = PPMU_HAS_SIER | PPMU_ARCH_207S,
.n_generic = ARRAY_SIZE(power8_generic_events),
.generic_events = power8_generic_events,
.cache_events = &power8_cache_events,

9
arch/s390/include/asm/irqflags.h
View File

@ -8,6 +8,8 @@
#include <linux/types.h>
#define ARCH_IRQ_ENABLED (3UL << (BITS_PER_LONG - 8))
/* store then OR system mask. */
#define __arch_local_irq_stosm(__or) \
({ \
@ -54,14 +56,17 @@ static inline notrace void arch_local_irq_enable(void)
__arch_local_irq_stosm(0x03);
}
/* This only restores external and I/O interrupt state */
static inline notrace void arch_local_irq_restore(unsigned long flags)
{
__arch_local_irq_ssm(flags);
/* only disabled->disabled and disabled->enabled is valid */
if (flags & ARCH_IRQ_ENABLED)
arch_local_irq_enable();
}
static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
{
return !(flags & (3UL << (BITS_PER_LONG - 8)));
return !(flags & ARCH_IRQ_ENABLED);
}
static inline notrace bool arch_irqs_disabled(void)

1
arch/s390/include/asm/kvm_host.h
View File

@ -546,7 +546,6 @@ struct kvm_vcpu_arch {
struct kvm_s390_sie_block *sie_block;
unsigned int host_acrs[NUM_ACRS];
struct fpu host_fpregs;
struct fpu guest_fpregs;
struct kvm_s390_local_interrupt local_int;
struct hrtimer ckc_timer;
struct kvm_s390_pgm_info pgm;

14
arch/s390/include/asm/pci_io.h
View File

@ -8,10 +8,13 @@
#include <asm/pci_insn.h>
/* I/O Map */
#define ZPCI_IOMAP_MAX_ENTRIES 0x7fff
#define ZPCI_IOMAP_ADDR_BASE 0x8000000000000000ULL
#define ZPCI_IOMAP_ADDR_IDX_MASK 0x7fff000000000000ULL
#define ZPCI_IOMAP_ADDR_OFF_MASK 0x0000ffffffffffffULL
#define ZPCI_IOMAP_SHIFT 48
#define ZPCI_IOMAP_ADDR_BASE 0x8000000000000000UL
#define ZPCI_IOMAP_ADDR_OFF_MASK ((1UL << ZPCI_IOMAP_SHIFT) - 1)
#define ZPCI_IOMAP_MAX_ENTRIES \
((ULONG_MAX - ZPCI_IOMAP_ADDR_BASE + 1) / (1UL << ZPCI_IOMAP_SHIFT))
#define ZPCI_IOMAP_ADDR_IDX_MASK \
(~ZPCI_IOMAP_ADDR_OFF_MASK - ZPCI_IOMAP_ADDR_BASE)
struct zpci_iomap_entry {
u32 fh;
@ -21,8 +24,9 @@ struct zpci_iomap_entry {
extern struct zpci_iomap_entry *zpci_iomap_start;
#define ZPCI_ADDR(idx) (ZPCI_IOMAP_ADDR_BASE | ((u64) idx << ZPCI_IOMAP_SHIFT))
#define ZPCI_IDX(addr) \
(((__force u64) addr & ZPCI_IOMAP_ADDR_IDX_MASK) >> 48)
(((__force u64) addr & ZPCI_IOMAP_ADDR_IDX_MASK) >> ZPCI_IOMAP_SHIFT)
#define ZPCI_OFFSET(addr) \
((__force u64) addr & ZPCI_IOMAP_ADDR_OFF_MASK)

4
arch/s390/include/asm/processor.h
View File

@ -166,14 +166,14 @@ extern __vector128 init_task_fpu_regs[__NUM_VXRS];
*/
#define start_thread(regs, new_psw, new_stackp) do { \
regs->psw.mask = PSW_USER_BITS | PSW_MASK_EA | PSW_MASK_BA; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->psw.addr = new_psw; \
regs->gprs[15] = new_stackp; \
execve_tail(); \
} while (0)
#define start_thread31(regs, new_psw, new_stackp) do { \
regs->psw.mask = PSW_USER_BITS | PSW_MASK_BA; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->psw.addr = new_psw; \
regs->gprs[15] = new_stackp; \
crst_table_downgrade(current->mm, 1UL << 31); \
execve_tail(); \

6
arch/s390/include/asm/ptrace.h
View File

@ -149,7 +149,7 @@ static inline int test_pt_regs_flag(struct pt_regs *regs, int flag)
#define arch_has_block_step() (1)
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
#define instruction_pointer(regs) ((regs)->psw.addr)
#define user_stack_pointer(regs)((regs)->gprs[15])
#define profile_pc(regs) instruction_pointer(regs)
@ -161,7 +161,7 @@ static inline long regs_return_value(struct pt_regs *regs)
static inline void instruction_pointer_set(struct pt_regs *regs,
unsigned long val)
{
regs->psw.addr = val | PSW_ADDR_AMODE;
regs->psw.addr = val;
}
int regs_query_register_offset(const char *name);
@ -171,7 +171,7 @@ unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
{
return regs->gprs[15] & PSW_ADDR_INSN;
return regs->gprs[15];
}
#endif /* __ASSEMBLY__ */

3
arch/s390/include/uapi/asm/unistd.h
View File

@ -310,7 +310,8 @@
#define __NR_recvmsg 372
#define __NR_shutdown 373
#define __NR_mlock2 374
#define NR_syscalls 375
#define __NR_copy_file_range 375
#define NR_syscalls 376
/*
* There are some system calls that are not present on 64 bit, some

1
arch/s390/kernel/compat_wrapper.c
View File

@ -177,3 +177,4 @@ COMPAT_SYSCALL_WRAP3(getsockname, int, fd, struct sockaddr __user *, usockaddr,
COMPAT_SYSCALL_WRAP3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
COMPAT_SYSCALL_WRAP6(sendto, int, fd, void __user *, buff, size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int, addr_len);
COMPAT_SYSCALL_WRAP3(mlock2, unsigned long, start, size_t, len, int, flags);
COMPAT_SYSCALL_WRAP6(copy_file_range, int, fd_in, loff_t __user *, off_in, int, fd_out, loff_t __user *, off_out, size_t, len, unsigned int, flags);

2
arch/s390/kernel/crash_dump.c
View File

@ -59,8 +59,6 @@ struct save_area * __init save_area_alloc(bool is_boot_cpu)
struct save_area *sa;
sa = (void *) memblock_alloc(sizeof(*sa), 8);
if (!sa)
return NULL;
if (is_boot_cpu)
list_add(&sa->list, &dump_save_areas);
else

2
arch/s390/kernel/debug.c
View File

@ -1470,7 +1470,7 @@ debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
except_str = "*";
else
except_str = "-";
caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN;
caller = (unsigned long) entry->caller;
rc += sprintf(out_buf, "%02i %011lld:%06lu %1u %1s %02i %p ",
area, (long long)time_spec.tv_sec,
time_spec.tv_nsec / 1000, level, except_str,

9
arch/s390/kernel/dumpstack.c
View File

@ -34,22 +34,21 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
unsigned long addr;
while (1) {
sp = sp & PSW_ADDR_INSN;
if (sp < low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
addr = sf->gprs[8] & PSW_ADDR_INSN;
addr = sf->gprs[8];
printk("([<%016lx>] %pSR)\n", addr, (void *)addr);
/* Follow the backchain. */
while (1) {
low = sp;
sp = sf->back_chain & PSW_ADDR_INSN;
sp = sf->back_chain;
if (!sp)
break;
if (sp <= low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
addr = sf->gprs[8] & PSW_ADDR_INSN;
addr = sf->gprs[8];
printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
}
/* Zero backchain detected, check for interrupt frame. */
@ -57,7 +56,7 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
if (sp <= low || sp > high - sizeof(*regs))
return sp;
regs = (struct pt_regs *) sp;
addr = regs->psw.addr & PSW_ADDR_INSN;
addr = regs->psw.addr;
printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
low = sp;
sp = regs->gprs[15];

8
arch/s390/kernel/early.c
View File

@ -252,14 +252,14 @@ static void early_pgm_check_handler(void)
unsigned long addr;
addr = S390_lowcore.program_old_psw.addr;
fixup = search_exception_tables(addr & PSW_ADDR_INSN);
fixup = search_exception_tables(addr);
if (!fixup)
disabled_wait(0);
/* Disable low address protection before storing into lowcore. */
__ctl_store(cr0, 0, 0);
cr0_new = cr0 & ~(1UL << 28);
__ctl_load(cr0_new, 0, 0);
S390_lowcore.program_old_psw.addr = extable_fixup(fixup)|PSW_ADDR_AMODE;
S390_lowcore.program_old_psw.addr = extable_fixup(fixup);
__ctl_load(cr0, 0, 0);
}
@ -268,9 +268,9 @@ static noinline __init void setup_lowcore_early(void)
psw_t psw;
psw.mask = PSW_MASK_BASE | PSW_DEFAULT_KEY | PSW_MASK_EA | PSW_MASK_BA;
psw.addr = PSW_ADDR_AMODE | (unsigned long) s390_base_ext_handler;
psw.addr = (unsigned long) s390_base_ext_handler;
S390_lowcore.external_new_psw = psw;
psw.addr = PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
psw.addr = (unsigned long) s390_base_pgm_handler;
S390_lowcore.program_new_psw = psw;
s390_base_pgm_handler_fn = early_pgm_check_handler;
}

2
arch/s390/kernel/ftrace.c
View File

@ -203,7 +203,7 @@ unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip)
goto out;
if (unlikely(atomic_read(&current->tracing_graph_pause)))
goto out;
ip = (ip & PSW_ADDR_INSN) - MCOUNT_INSN_SIZE;
ip -= MCOUNT_INSN_SIZE;
trace.func = ip;
trace.depth = current->curr_ret_stack + 1;
/* Only trace if the calling function expects to. */

4
arch/s390/kernel/ipl.c
View File

@ -2057,12 +2057,12 @@ void s390_reset_system(void)
/* Set new machine check handler */
S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT;
S390_lowcore.mcck_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler;
(unsigned long) s390_base_mcck_handler;
/* Set new program check handler */
S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT;
S390_lowcore.program_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
(unsigned long) s390_base_pgm_handler;
/*
* Clear subchannel ID and number to signal new kernel that no CCW or

16
arch/s390/kernel/kprobes.c
View File

@ -226,7 +226,7 @@ static void enable_singlestep(struct kprobe_ctlblk *kcb,
__ctl_load(per_kprobe, 9, 11);
regs->psw.mask |= PSW_MASK_PER;
regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT);
regs->psw.addr = ip | PSW_ADDR_AMODE;
regs->psw.addr = ip;
}
NOKPROBE_SYMBOL(enable_singlestep);
@ -238,7 +238,7 @@ static void disable_singlestep(struct kprobe_ctlblk *kcb,
__ctl_load(kcb->kprobe_saved_ctl, 9, 11);
regs->psw.mask &= ~PSW_MASK_PER;
regs->psw.mask |= kcb->kprobe_saved_imask;
regs->psw.addr = ip | PSW_ADDR_AMODE;
regs->psw.addr = ip;
}
NOKPROBE_SYMBOL(disable_singlestep);
@ -310,7 +310,7 @@ static int kprobe_handler(struct pt_regs *regs)
*/
preempt_disable();
kcb = get_kprobe_ctlblk();
p = get_kprobe((void *)((regs->psw.addr & PSW_ADDR_INSN) - 2));
p = get_kprobe((void *)(regs->psw.addr - 2));
if (p) {
if (kprobe_running()) {
@ -460,7 +460,7 @@ static int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
break;
}
regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
regs->psw.addr = orig_ret_address;
pop_kprobe(get_kprobe_ctlblk());
kretprobe_hash_unlock(current, &flags);
@ -490,7 +490,7 @@ NOKPROBE_SYMBOL(trampoline_probe_handler);
static void resume_execution(struct kprobe *p, struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
unsigned long ip = regs->psw.addr & PSW_ADDR_INSN;
unsigned long ip = regs->psw.addr;
int fixup = probe_get_fixup_type(p->ainsn.insn);
/* Check if the kprobes location is an enabled ftrace caller */
@ -605,9 +605,9 @@ static int kprobe_trap_handler(struct pt_regs *regs, int trapnr)
* In case the user-specified fault handler returned
* zero, try to fix up.
*/
entry = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
entry = search_exception_tables(regs->psw.addr);
if (entry) {
regs->psw.addr = extable_fixup(entry) | PSW_ADDR_AMODE;
regs->psw.addr = extable_fixup(entry);
return 1;
}
@ -683,7 +683,7 @@ int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs));
/* setup return addr to the jprobe handler routine */
regs->psw.addr = (unsigned long) jp->entry | PSW_ADDR_AMODE;
regs->psw.addr = (unsigned long) jp->entry;
regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT);
/* r15 is the stack pointer */

12
arch/s390/kernel/perf_event.c
View File

@ -74,7 +74,7 @@ static unsigned long guest_is_user_mode(struct pt_regs *regs)
static unsigned long instruction_pointer_guest(struct pt_regs *regs)
{
return sie_block(regs)->gpsw.addr & PSW_ADDR_INSN;
return sie_block(regs)->gpsw.addr;
}
unsigned long perf_instruction_pointer(struct pt_regs *regs)
@ -231,29 +231,27 @@ static unsigned long __store_trace(struct perf_callchain_entry *entry,
struct pt_regs *regs;
while (1) {
sp = sp & PSW_ADDR_INSN;
if (sp < low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
perf_callchain_store(entry, sf->gprs[8] & PSW_ADDR_INSN);
perf_callchain_store(entry, sf->gprs[8]);
/* Follow the backchain. */
while (1) {
low = sp;
sp = sf->back_chain & PSW_ADDR_INSN;
sp = sf->back_chain;
if (!sp)
break;
if (sp <= low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
perf_callchain_store(entry,
sf->gprs[8] & PSW_ADDR_INSN);
perf_callchain_store(entry, sf->gprs[8]);
}
/* Zero backchain detected, check for interrupt frame. */
sp = (unsigned long) (sf + 1);
if (sp <= low || sp > high - sizeof(*regs))
return sp;
regs = (struct pt_regs *) sp;
perf_callchain_store(entry, sf->gprs[8] & PSW_ADDR_INSN);
perf_callchain_store(entry, sf->gprs[8]);
low = sp;
sp = regs->gprs[15];
}

12
arch/s390/kernel/process.c
View File

@ -56,10 +56,10 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return 0;
low = task_stack_page(tsk);
high = (struct stack_frame *) task_pt_regs(tsk);
sf = (struct stack_frame *) (tsk->thread.ksp & PSW_ADDR_INSN);
sf = (struct stack_frame *) tsk->thread.ksp;
if (sf <= low || sf > high)
return 0;
sf = (struct stack_frame *) (sf->back_chain & PSW_ADDR_INSN);
sf = (struct stack_frame *) sf->back_chain;
if (sf <= low || sf > high)
return 0;
return sf->gprs[8];
@ -154,7 +154,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
memset(&frame->childregs, 0, sizeof(struct pt_regs));
frame->childregs.psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT |
PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
frame->childregs.psw.addr = PSW_ADDR_AMODE |
frame->childregs.psw.addr =
(unsigned long) kernel_thread_starter;
frame->childregs.gprs[9] = new_stackp; /* function */
frame->childregs.gprs[10] = arg;
@ -220,14 +220,14 @@ unsigned long get_wchan(struct task_struct *p)
return 0;
low = task_stack_page(p);
high = (struct stack_frame *) task_pt_regs(p);
sf = (struct stack_frame *) (p->thread.ksp & PSW_ADDR_INSN);
sf = (struct stack_frame *) p->thread.ksp;
if (sf <= low || sf > high)
return 0;
for (count = 0; count < 16; count++) {
sf = (struct stack_frame *) (sf->back_chain & PSW_ADDR_INSN);
sf = (struct stack_frame *) sf->back_chain;
if (sf <= low || sf > high)
return 0;
return_address = sf->gprs[8] & PSW_ADDR_INSN;
return_address = sf->gprs[8];
if (!in_sched_functions(return_address))
return return_address;
}

6
arch/s390/kernel/ptrace.c
View File

@ -84,7 +84,7 @@ void update_cr_regs(struct task_struct *task)
if (test_tsk_thread_flag(task, TIF_UPROBE_SINGLESTEP))
new.control |= PER_EVENT_IFETCH;
new.start = 0;
new.end = PSW_ADDR_INSN;
new.end = -1UL;
}
/* Take care of the PER enablement bit in the PSW. */
@ -148,7 +148,7 @@ static inline unsigned long __peek_user_per(struct task_struct *child,
else if (addr == (addr_t) &dummy->cr11)
/* End address of the active per set. */
return test_thread_flag(TIF_SINGLE_STEP) ?
PSW_ADDR_INSN : child->thread.per_user.end;
-1UL : child->thread.per_user.end;
else if (addr == (addr_t) &dummy->bits)
/* Single-step bit. */
return test_thread_flag(TIF_SINGLE_STEP) ?
@ -495,8 +495,6 @@ long arch_ptrace(struct task_struct *child, long request,
}
return 0;
default:
/* Removing high order bit from addr (only for 31 bit). */
addr &= PSW_ADDR_INSN;
return ptrace_request(child, request, addr, data);
}
}

16
arch/s390/kernel/setup.c
View File

@ -301,25 +301,21 @@ static void __init setup_lowcore(void)
BUILD_BUG_ON(sizeof(struct lowcore) != LC_PAGES * 4096);
lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
lc->restart_psw.mask = PSW_KERNEL_BITS;
lc->restart_psw.addr =
PSW_ADDR_AMODE | (unsigned long) restart_int_handler;
lc->restart_psw.addr = (unsigned long) restart_int_handler;
lc->external_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
lc->external_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) ext_int_handler;
lc->external_new_psw.addr = (unsigned long) ext_int_handler;
lc->svc_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
lc->svc_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) system_call;
lc->svc_new_psw.addr = (unsigned long) system_call;
lc->program_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
lc->program_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) pgm_check_handler;
lc->program_new_psw.addr = (unsigned long) pgm_check_handler;
lc->mcck_new_psw.mask = PSW_KERNEL_BITS;
lc->mcck_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) mcck_int_handler;
lc->mcck_new_psw.addr = (unsigned long) mcck_int_handler;
lc->io_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
lc->io_new_psw.addr = (unsigned long) io_int_handler;
lc->clock_comparator = -1ULL;
lc->kernel_stack = ((unsigned long) &init_thread_union)
+ THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);

13
arch/s390/kernel/signal.c
View File

@ -331,13 +331,13 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
restorer = (unsigned long) ka->sa.sa_restorer | PSW_ADDR_AMODE;
restorer = (unsigned long) ka->sa.sa_restorer;
} else {
/* Signal frame without vector registers are short ! */
__u16 __user *svc = (void __user *) frame + frame_size - 2;
if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, svc))
return -EFAULT;
restorer = (unsigned long) svc | PSW_ADDR_AMODE;
restorer = (unsigned long) svc;
}
/* Set up registers for signal handler */
@ -347,7 +347,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
(PSW_USER_BITS & PSW_MASK_ASC) |
(regs->psw.mask & ~PSW_MASK_ASC);
regs->psw.addr = (unsigned long) ka->sa.sa_handler | PSW_ADDR_AMODE;
regs->psw.addr = (unsigned long) ka->sa.sa_handler;
regs->gprs[2] = sig;
regs->gprs[3] = (unsigned long) &frame->sc;
@ -394,13 +394,12 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ksig->ka.sa.sa_flags & SA_RESTORER) {
restorer = (unsigned long)
ksig->ka.sa.sa_restorer | PSW_ADDR_AMODE;
restorer = (unsigned long) ksig->ka.sa.sa_restorer;
} else {
__u16 __user *svc = &frame->svc_insn;
if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, svc))
return -EFAULT;
restorer = (unsigned long) svc | PSW_ADDR_AMODE;
restorer = (unsigned long) svc;
}
/* Create siginfo on the signal stack */
@ -426,7 +425,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
(PSW_USER_BITS & PSW_MASK_ASC) |
(regs->psw.mask & ~PSW_MASK_ASC);
regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler | PSW_ADDR_AMODE;
regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler;
regs->gprs[2] = ksig->sig;
regs->gprs[3] = (unsigned long) &frame->info;

2
arch/s390/kernel/smp.c
View File

@ -623,8 +623,6 @@ void __init smp_save_dump_cpus(void)
return;
/* Allocate a page as dumping area for the store status sigps */
page = memblock_alloc_base(PAGE_SIZE, PAGE_SIZE, 1UL << 31);
if (!page)
panic("could not allocate memory for save area\n");
/* Set multi-threading state to the previous system. */
pcpu_set_smt(sclp.mtid_prev);
boot_cpu_addr = stap();

11
arch/s390/kernel/stacktrace.c
View File

@ -21,12 +21,11 @@ static unsigned long save_context_stack(struct stack_trace *trace,
unsigned long addr;
while(1) {
sp &= PSW_ADDR_INSN;
if (sp < low || sp > high)
return sp;
sf = (struct stack_frame *)sp;
while(1) {
addr = sf->gprs[8] & PSW_ADDR_INSN;
addr = sf->gprs[8];
if (!trace->skip)
trace->entries[trace->nr_entries++] = addr;
else
@ -34,7 +33,7 @@ static unsigned long save_context_stack(struct stack_trace *trace,
if (trace->nr_entries >= trace->max_entries)
return sp;
low = sp;
sp = sf->back_chain & PSW_ADDR_INSN;
sp = sf->back_chain;
if (!sp)
break;
if (sp <= low || sp > high - sizeof(*sf))
@ -46,7 +45,7 @@ static unsigned long save_context_stack(struct stack_trace *trace,
if (sp <= low || sp > high - sizeof(*regs))
return sp;
regs = (struct pt_regs *)sp;
addr = regs->psw.addr & PSW_ADDR_INSN;
addr = regs->psw.addr;
if (savesched || !in_sched_functions(addr)) {
if (!trace->skip)
trace->entries[trace->nr_entries++] = addr;
@ -65,7 +64,7 @@ void save_stack_trace(struct stack_trace *trace)
register unsigned long sp asm ("15");
unsigned long orig_sp, new_sp;
orig_sp = sp & PSW_ADDR_INSN;
orig_sp = sp;
new_sp = save_context_stack(trace, orig_sp,
S390_lowcore.panic_stack - PAGE_SIZE,
S390_lowcore.panic_stack, 1);
@ -86,7 +85,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
unsigned long sp, low, high;
sp = tsk->thread.ksp & PSW_ADDR_INSN;
sp = tsk->thread.ksp;
low = (unsigned long) task_stack_page(tsk);
high = (unsigned long) task_pt_regs(tsk);
save_context_stack(trace, sp, low, high, 0);

1
arch/s390/kernel/syscalls.S
View File

@ -383,3 +383,4 @@ SYSCALL(sys_recvfrom,compat_sys_recvfrom)
SYSCALL(sys_recvmsg,compat_sys_recvmsg)
SYSCALL(sys_shutdown,sys_shutdown)
SYSCALL(sys_mlock2,compat_sys_mlock2)
SYSCALL(sys_copy_file_range,compat_sys_copy_file_range) /* 375 */

11
arch/s390/kernel/traps.c
View File

@ -32,8 +32,7 @@ static inline void __user *get_trap_ip(struct pt_regs *regs)
address = *(unsigned long *)(current->thread.trap_tdb + 24);
else
address = regs->psw.addr;
return (void __user *)
((address - (regs->int_code >> 16)) & PSW_ADDR_INSN);
return (void __user *) (address - (regs->int_code >> 16));
}
static inline void report_user_fault(struct pt_regs *regs, int signr)
@ -46,7 +45,7 @@ static inline void report_user_fault(struct pt_regs *regs, int signr)
return;
printk("User process fault: interruption code %04x ilc:%d ",
regs->int_code & 0xffff, regs->int_code >> 17);
print_vma_addr("in ", regs->psw.addr & PSW_ADDR_INSN);
print_vma_addr("in ", regs->psw.addr);
printk("\n");
show_regs(regs);
}
@ -69,13 +68,13 @@ void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
report_user_fault(regs, si_signo);
} else {
const struct exception_table_entry *fixup;
fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
fixup = search_exception_tables(regs->psw.addr);
if (fixup)
regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
regs->psw.addr = extable_fixup(fixup);
else {
enum bug_trap_type btt;
btt = report_bug(regs->psw.addr & PSW_ADDR_INSN, regs);
btt = report_bug(regs->psw.addr, regs);
if (btt == BUG_TRAP_TYPE_WARN)
return;
die(regs, str);

1
arch/s390/kvm/Kconfig
View File

@ -29,6 +29,7 @@ config KVM
select HAVE_KVM_IRQFD
select HAVE_KVM_IRQ_ROUTING
select SRCU
select KVM_VFIO
---help---
Support hosting paravirtualized guest machines using the SIE
virtualization capability on the mainframe. This should work

2
arch/s390/kvm/Makefile
View File

@ -7,7 +7,7 @@
# as published by the Free Software Foundation.
KVM := ../../../virt/kvm
common-objs = $(KVM)/kvm_main.o $(KVM)/eventfd.o $(KVM)/async_pf.o $(KVM)/irqchip.o
common-objs = $(KVM)/kvm_main.o $(KVM)/eventfd.o $(KVM)/async_pf.o $(KVM)/irqchip.o $(KVM)/vfio.o
ccflags-y := -Ivirt/kvm -Iarch/s390/kvm

4
arch/s390/kvm/guestdbg.c
View File

@ -116,7 +116,7 @@ static void enable_all_hw_wp(struct kvm_vcpu *vcpu)
if (*cr9 & PER_EVENT_STORE && *cr9 & PER_CONTROL_ALTERATION) {
*cr9 &= ~PER_CONTROL_ALTERATION;
*cr10 = 0;
*cr11 = PSW_ADDR_INSN;
*cr11 = -1UL;
} else {
*cr9 &= ~PER_CONTROL_ALTERATION;
*cr9 |= PER_EVENT_STORE;
@ -159,7 +159,7 @@ void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu)
vcpu->arch.sie_block->gcr[0] &= ~0x800ul;
vcpu->arch.sie_block->gcr[9] |= PER_EVENT_IFETCH;
vcpu->arch.sie_block->gcr[10] = 0;
vcpu->arch.sie_block->gcr[11] = PSW_ADDR_INSN;
vcpu->arch.sie_block->gcr[11] = -1UL;
}
if (guestdbg_hw_bp_enabled(vcpu)) {

121
arch/s390/kvm/kvm-s390.c
View File

@ -1423,44 +1423,18 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
return 0;
}
/*
* Backs up the current FP/VX register save area on a particular
* destination. Used to switch between different register save
* areas.
*/
static inline void save_fpu_to(struct fpu *dst)
{
dst->fpc = current->thread.fpu.fpc;
dst->regs = current->thread.fpu.regs;
}
/*
* Switches the FP/VX register save area from which to lazy
* restore register contents.
*/
static inline void load_fpu_from(struct fpu *from)
{
current->thread.fpu.fpc = from->fpc;
current->thread.fpu.regs = from->regs;
}
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
/* Save host register state */
save_fpu_regs();
save_fpu_to(&vcpu->arch.host_fpregs);
if (test_kvm_facility(vcpu->kvm, 129)) {
current->thread.fpu.fpc = vcpu->run->s.regs.fpc;
/*
* Use the register save area in the SIE-control block
* for register restore and save in kvm_arch_vcpu_put()
*/
current->thread.fpu.vxrs =
(__vector128 *)&vcpu->run->s.regs.vrs;
} else
load_fpu_from(&vcpu->arch.guest_fpregs);
vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc;
vcpu->arch.host_fpregs.regs = current->thread.fpu.regs;
/* Depending on MACHINE_HAS_VX, data stored to vrs either
* has vector register or floating point register format.
*/
current->thread.fpu.regs = vcpu->run->s.regs.vrs;
current->thread.fpu.fpc = vcpu->run->s.regs.fpc;
if (test_fp_ctl(current->thread.fpu.fpc))
/* User space provided an invalid FPC, let's clear it */
current->thread.fpu.fpc = 0;
@ -1476,19 +1450,13 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
atomic_andnot(CPUSTAT_RUNNING, &vcpu->arch.sie_block->cpuflags);
gmap_disable(vcpu->arch.gmap);
/* Save guest register state */
save_fpu_regs();
vcpu->run->s.regs.fpc = current->thread.fpu.fpc;
if (test_kvm_facility(vcpu->kvm, 129))
/*
* kvm_arch_vcpu_load() set up the register save area to
* the &vcpu->run->s.regs.vrs and, thus, the vector registers
* are already saved. Only the floating-point control must be
* copied.
*/
vcpu->run->s.regs.fpc = current->thread.fpu.fpc;
else
save_fpu_to(&vcpu->arch.guest_fpregs);
load_fpu_from(&vcpu->arch.host_fpregs);
/* Restore host register state */
current->thread.fpu.fpc = vcpu->arch.host_fpregs.fpc;
current->thread.fpu.regs = vcpu->arch.host_fpregs.regs;
save_access_regs(vcpu->run->s.regs.acrs);
restore_access_regs(vcpu->arch.host_acrs);
@ -1506,8 +1474,9 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
memset(vcpu->arch.sie_block->gcr, 0, 16 * sizeof(__u64));
vcpu->arch.sie_block->gcr[0] = 0xE0UL;
vcpu->arch.sie_block->gcr[14] = 0xC2000000UL;
vcpu->arch.guest_fpregs.fpc = 0;
asm volatile("lfpc %0" : : "Q" (vcpu->arch.guest_fpregs.fpc));
/* make sure the new fpc will be lazily loaded */
save_fpu_regs();
current->thread.fpu.fpc = 0;
vcpu->arch.sie_block->gbea = 1;
vcpu->arch.sie_block->pp = 0;
vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID;
@ -1648,17 +1617,6 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
vcpu->arch.local_int.wq = &vcpu->wq;
vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags;
/*
* Allocate a save area for floating-point registers. If the vector
* extension is available, register contents are saved in the SIE
* control block. The allocated save area is still required in
* particular places, for example, in kvm_s390_vcpu_store_status().
*/
vcpu->arch.guest_fpregs.fprs = kzalloc(sizeof(freg_t) * __NUM_FPRS,
GFP_KERNEL);
if (!vcpu->arch.guest_fpregs.fprs)
goto out_free_sie_block;
rc = kvm_vcpu_init(vcpu, kvm, id);
if (rc)
goto out_free_sie_block;
@ -1879,19 +1837,27 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
/* make sure the new values will be lazily loaded */
save_fpu_regs();
if (test_fp_ctl(fpu->fpc))
return -EINVAL;
memcpy(vcpu->arch.guest_fpregs.fprs, &fpu->fprs, sizeof(fpu->fprs));
vcpu->arch.guest_fpregs.fpc = fpu->fpc;
save_fpu_regs();
load_fpu_from(&vcpu->arch.guest_fpregs);
current->thread.fpu.fpc = fpu->fpc;
if (MACHINE_HAS_VX)
convert_fp_to_vx(current->thread.fpu.vxrs, (freg_t *)fpu->fprs);
else
memcpy(current->thread.fpu.fprs, &fpu->fprs, sizeof(fpu->fprs));
return 0;
}
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
memcpy(&fpu->fprs, vcpu->arch.guest_fpregs.fprs, sizeof(fpu->fprs));
fpu->fpc = vcpu->arch.guest_fpregs.fpc;
/* make sure we have the latest values */
save_fpu_regs();
if (MACHINE_HAS_VX)
convert_vx_to_fp((freg_t *)fpu->fprs, current->thread.fpu.vxrs);
else
memcpy(fpu->fprs, current->thread.fpu.fprs, sizeof(fpu->fprs));
fpu->fpc = current->thread.fpu.fpc;
return 0;
}
@ -2396,6 +2362,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa)
{
unsigned char archmode = 1;
freg_t fprs[NUM_FPRS];
unsigned int px;
u64 clkcomp;
int rc;
@ -2411,8 +2378,16 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa)
gpa = px;
} else
gpa -= __LC_FPREGS_SAVE_AREA;
rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA,
vcpu->arch.guest_fpregs.fprs, 128);
/* manually convert vector registers if necessary */
if (MACHINE_HAS_VX) {
convert_vx_to_fp(fprs, current->thread.fpu.vxrs);
rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA,
fprs, 128);
} else {
rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA,
vcpu->run->s.regs.vrs, 128);
}
rc |= write_guest_abs(vcpu, gpa + __LC_GPREGS_SAVE_AREA,
vcpu->run->s.regs.gprs, 128);
rc |= write_guest_abs(vcpu, gpa + __LC_PSW_SAVE_AREA,
@ -2420,7 +2395,7 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa)
rc |= write_guest_abs(vcpu, gpa + __LC_PREFIX_SAVE_AREA,
&px, 4);
rc |= write_guest_abs(vcpu, gpa + __LC_FP_CREG_SAVE_AREA,
&vcpu->arch.guest_fpregs.fpc, 4);
&vcpu->run->s.regs.fpc, 4);
rc |= write_guest_abs(vcpu, gpa + __LC_TOD_PROGREG_SAVE_AREA,
&vcpu->arch.sie_block->todpr, 4);
rc |= write_guest_abs(vcpu, gpa + __LC_CPU_TIMER_SAVE_AREA,
@ -2443,19 +2418,7 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
* it into the save area
*/
save_fpu_regs();
if (test_kvm_facility(vcpu->kvm, 129)) {
/*
* If the vector extension is available, the vector registers
* which overlaps with floating-point registers are saved in
* the SIE-control block. Hence, extract the floating-point
* registers and the FPC value and store them in the
* guest_fpregs structure.
*/
vcpu->arch.guest_fpregs.fpc = current->thread.fpu.fpc;
convert_vx_to_fp(vcpu->arch.guest_fpregs.fprs,
current->thread.fpu.vxrs);
} else
save_fpu_to(&vcpu->arch.guest_fpregs);
vcpu->run->s.regs.fpc = current->thread.fpu.fpc;
save_access_regs(vcpu->run->s.regs.acrs);
return kvm_s390_store_status_unloaded(vcpu, addr);

6
arch/s390/mm/fault.c
View File

@ -228,7 +228,7 @@ static inline void report_user_fault(struct pt_regs *regs, long signr)
return;
printk(KERN_ALERT "User process fault: interruption code %04x ilc:%d ",
regs->int_code & 0xffff, regs->int_code >> 17);
print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN);
print_vma_addr(KERN_CONT "in ", regs->psw.addr);
printk(KERN_CONT "\n");
printk(KERN_ALERT "failing address: %016lx TEID: %016lx\n",
regs->int_parm_long & __FAIL_ADDR_MASK, regs->int_parm_long);
@ -256,9 +256,9 @@ static noinline void do_no_context(struct pt_regs *regs)
const struct exception_table_entry *fixup;
/* Are we prepared to handle this kernel fault? */
fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
fixup = search_exception_tables(regs->psw.addr);
if (fixup) {
regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
regs->psw.addr = extable_fixup(fixup);
return;
}

2
arch/s390/mm/init.c
View File

@ -98,7 +98,7 @@ void __init paging_init(void)
__ctl_load(S390_lowcore.kernel_asce, 1, 1);
__ctl_load(S390_lowcore.kernel_asce, 7, 7);
__ctl_load(S390_lowcore.kernel_asce, 13, 13);
arch_local_irq_restore(4UL << (BITS_PER_LONG - 8));
__arch_local_irq_stosm(0x04);
sparse_memory_present_with_active_regions(MAX_NUMNODES);
sparse_init();

12
arch/s390/mm/mmap.c
View File

@ -169,12 +169,12 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
int s390_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
{
if (is_compat_task() || (TASK_SIZE >= (1UL << 53)))
if (is_compat_task() || TASK_SIZE >= TASK_MAX_SIZE)
return 0;
if (!(flags & MAP_FIXED))
addr = 0;
if ((addr + len) >= TASK_SIZE)
return crst_table_upgrade(current->mm, 1UL << 53);
return crst_table_upgrade(current->mm, TASK_MAX_SIZE);
return 0;
}
@ -189,9 +189,9 @@ s390_get_unmapped_area(struct file *filp, unsigned long addr,
area = arch_get_unmapped_area(filp, addr, len, pgoff, flags);
if (!(area & ~PAGE_MASK))
return area;
if (area == -ENOMEM && !is_compat_task() && TASK_SIZE < (1UL << 53)) {
if (area == -ENOMEM && !is_compat_task() && TASK_SIZE < TASK_MAX_SIZE) {
/* Upgrade the page table to 4 levels and retry. */
rc = crst_table_upgrade(mm, 1UL << 53);
rc = crst_table_upgrade(mm, TASK_MAX_SIZE);
if (rc)
return (unsigned long) rc;
area = arch_get_unmapped_area(filp, addr, len, pgoff, flags);
@ -211,9 +211,9 @@ s390_get_unmapped_area_topdown(struct file *filp, const unsigned long addr,
area = arch_get_unmapped_area_topdown(filp, addr, len, pgoff, flags);
if (!(area & ~PAGE_MASK))
return area;
if (area == -ENOMEM && !is_compat_task() && TASK_SIZE < (1UL << 53)) {
if (area == -ENOMEM && !is_compat_task() && TASK_SIZE < TASK_MAX_SIZE) {
/* Upgrade the page table to 4 levels and retry. */
rc = crst_table_upgrade(mm, 1UL << 53);
rc = crst_table_upgrade(mm, TASK_MAX_SIZE);
if (rc)
return (unsigned long) rc;
area = arch_get_unmapped_area_topdown(filp, addr, len,

2
arch/s390/mm/pgtable.c
View File

@ -55,7 +55,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long limit)
unsigned long entry;
int flush;
BUG_ON(limit > (1UL << 53));
BUG_ON(limit > TASK_MAX_SIZE);
flush = 0;
repeat:
table = crst_table_alloc(mm);

6
arch/s390/numa/numa.c
View File

@ -57,9 +57,7 @@ static __init pg_data_t *alloc_node_data(void)
{
pg_data_t *res;
res = (pg_data_t *) memblock_alloc(sizeof(pg_data_t), 1);
if (!res)
panic("Could not allocate memory for node data!\n");
res = (pg_data_t *) memblock_alloc(sizeof(pg_data_t), 8);
memset(res, 0, sizeof(pg_data_t));
return res;
}
@ -162,7 +160,7 @@ static int __init numa_init_late(void)
register_one_node(nid);
return 0;
}
device_initcall(numa_init_late);
arch_initcall(numa_init_late);
static int __init parse_debug(char *parm)
{

9
arch/s390/oprofile/backtrace.c
View File

@ -16,24 +16,23 @@ __show_trace(unsigned int *depth, unsigned long sp,
struct pt_regs *regs;
while (*depth) {
sp = sp & PSW_ADDR_INSN;
if (sp < low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
(*depth)--;
oprofile_add_trace(sf->gprs[8] & PSW_ADDR_INSN);
oprofile_add_trace(sf->gprs[8]);
/* Follow the backchain. */
while (*depth) {
low = sp;
sp = sf->back_chain & PSW_ADDR_INSN;
sp = sf->back_chain;
if (!sp)
break;
if (sp <= low || sp > high - sizeof(*sf))
return sp;
sf = (struct stack_frame *) sp;
(*depth)--;
oprofile_add_trace(sf->gprs[8] & PSW_ADDR_INSN);
oprofile_add_trace(sf->gprs[8]);
}
@ -46,7 +45,7 @@ __show_trace(unsigned int *depth, unsigned long sp,
return sp;
regs = (struct pt_regs *) sp;
(*depth)--;
oprofile_add_trace(sf->gprs[8] & PSW_ADDR_INSN);
oprofile_add_trace(sf->gprs[8]);
low = sp;
sp = regs->gprs[15];
}

61
arch/s390/pci/pci.c
View File

@ -68,9 +68,12 @@ static struct airq_struct zpci_airq = {
.isc = PCI_ISC,
};
/* I/O Map */
#define ZPCI_IOMAP_ENTRIES \
min(((unsigned long) CONFIG_PCI_NR_FUNCTIONS * PCI_BAR_COUNT), \
ZPCI_IOMAP_MAX_ENTRIES)
static DEFINE_SPINLOCK(zpci_iomap_lock);
static DECLARE_BITMAP(zpci_iomap, ZPCI_IOMAP_MAX_ENTRIES);
static unsigned long *zpci_iomap_bitmap;
struct zpci_iomap_entry *zpci_iomap_start;
EXPORT_SYMBOL_GPL(zpci_iomap_start);
@ -265,27 +268,20 @@ void __iomem *pci_iomap_range(struct pci_dev *pdev,
unsigned long max)
{
struct zpci_dev *zdev = to_zpci(pdev);
u64 addr;
int idx;
if ((bar & 7) != bar)
if (!pci_resource_len(pdev, bar))
return NULL;
idx = zdev->bars[bar].map_idx;
spin_lock(&zpci_iomap_lock);
if (zpci_iomap_start[idx].count++) {
BUG_ON(zpci_iomap_start[idx].fh != zdev->fh ||
zpci_iomap_start[idx].bar != bar);
} else {
zpci_iomap_start[idx].fh = zdev->fh;
zpci_iomap_start[idx].bar = bar;
}
/* Detect overrun */
BUG_ON(!zpci_iomap_start[idx].count);
WARN_ON(!++zpci_iomap_start[idx].count);
zpci_iomap_start[idx].fh = zdev->fh;
zpci_iomap_start[idx].bar = bar;
spin_unlock(&zpci_iomap_lock);
addr = ZPCI_IOMAP_ADDR_BASE | ((u64) idx << 48);
return (void __iomem *) addr + offset;
return (void __iomem *) ZPCI_ADDR(idx) + offset;
}
EXPORT_SYMBOL(pci_iomap_range);
@ -297,12 +293,11 @@ EXPORT_SYMBOL(pci_iomap);
void pci_iounmap(struct pci_dev *pdev, void __iomem *addr)
{
unsigned int idx;
unsigned int idx = ZPCI_IDX(addr);
idx = (((__force u64) addr) & ~ZPCI_IOMAP_ADDR_BASE) >> 48;
spin_lock(&zpci_iomap_lock);
/* Detect underrun */
BUG_ON(!zpci_iomap_start[idx].count);
WARN_ON(!zpci_iomap_start[idx].count);
if (!--zpci_iomap_start[idx].count) {
zpci_iomap_start[idx].fh = 0;
zpci_iomap_start[idx].bar = 0;
@ -544,15 +539,15 @@ static void zpci_irq_exit(void)
static int zpci_alloc_iomap(struct zpci_dev *zdev)
{
int entry;
unsigned long entry;
spin_lock(&zpci_iomap_lock);
entry = find_first_zero_bit(zpci_iomap, ZPCI_IOMAP_MAX_ENTRIES);
if (entry == ZPCI_IOMAP_MAX_ENTRIES) {
entry = find_first_zero_bit(zpci_iomap_bitmap, ZPCI_IOMAP_ENTRIES);
if (entry == ZPCI_IOMAP_ENTRIES) {
spin_unlock(&zpci_iomap_lock);
return -ENOSPC;
}
set_bit(entry, zpci_iomap);
set_bit(entry, zpci_iomap_bitmap);
spin_unlock(&zpci_iomap_lock);
return entry;
}
@ -561,7 +556,7 @@ static void zpci_free_iomap(struct zpci_dev *zdev, int entry)
{
spin_lock(&zpci_iomap_lock);
memset(&zpci_iomap_start[entry], 0, sizeof(struct zpci_iomap_entry));
clear_bit(entry, zpci_iomap);
clear_bit(entry, zpci_iomap_bitmap);
spin_unlock(&zpci_iomap_lock);
}
@ -611,8 +606,7 @@ static int zpci_setup_bus_resources(struct zpci_dev *zdev,
if (zdev->bars[i].val & 4)
flags |= IORESOURCE_MEM_64;
addr = ZPCI_IOMAP_ADDR_BASE + ((u64) entry << 48);
addr = ZPCI_ADDR(entry);
size = 1UL << zdev->bars[i].size;
res = __alloc_res(zdev, addr, size, flags);
@ -873,23 +867,30 @@ static int zpci_mem_init(void)
zdev_fmb_cache = kmem_cache_create("PCI_FMB_cache", sizeof(struct zpci_fmb),
16, 0, NULL);
if (!zdev_fmb_cache)
goto error_zdev;
goto error_fmb;
/* TODO: use realloc */
zpci_iomap_start = kzalloc(ZPCI_IOMAP_MAX_ENTRIES * sizeof(*zpci_iomap_start),
GFP_KERNEL);
zpci_iomap_start = kcalloc(ZPCI_IOMAP_ENTRIES,
sizeof(*zpci_iomap_start), GFP_KERNEL);
if (!zpci_iomap_start)
goto error_iomap;
return 0;
zpci_iomap_bitmap = kcalloc(BITS_TO_LONGS(ZPCI_IOMAP_ENTRIES),
sizeof(*zpci_iomap_bitmap), GFP_KERNEL);
if (!zpci_iomap_bitmap)
goto error_iomap_bitmap;
return 0;
error_iomap_bitmap:
kfree(zpci_iomap_start);
error_iomap:
kmem_cache_destroy(zdev_fmb_cache);
error_zdev:
error_fmb:
return -ENOMEM;
}
static void zpci_mem_exit(void)
{
kfree(zpci_iomap_bitmap);
kfree(zpci_iomap_start);
kmem_cache_destroy(zdev_fmb_cache);
}

5
arch/s390/pci/pci_event.c
View File

@ -53,6 +53,11 @@ static void __zpci_event_error(struct zpci_ccdf_err *ccdf)
pr_err("%s: Event 0x%x reports an error for PCI function 0x%x\n",
pdev ? pci_name(pdev) : "n/a", ccdf->pec, ccdf->fid);
if (!pdev)
return;
pdev->error_state = pci_channel_io_perm_failure;
}
void zpci_event_error(void *data)

1
arch/sh/include/asm/barrier.h
View File

@ -33,7 +33,6 @@
#endif
#define __smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0)
#define smp_store_mb(var, value) __smp_store_mb(var, value)
#include <asm-generic/barrier.h>

3
arch/x86/Kconfig
View File

@ -509,11 +509,10 @@ config X86_INTEL_CE
config X86_INTEL_MID
bool "Intel MID platform support"
depends on X86_32
depends on X86_EXTENDED_PLATFORM
depends on X86_PLATFORM_DEVICES
depends on PCI
depends on PCI_GOANY
depends on X86_64 || (PCI_GOANY && X86_32)
depends on X86_IO_APIC
select SFI
select I2C

5
arch/x86/include/asm/irq.h
View File

@ -23,11 +23,13 @@ extern void irq_ctx_init(int cpu);
#define __ARCH_HAS_DO_SOFTIRQ
struct irq_desc;
#ifdef CONFIG_HOTPLUG_CPU
#include <linux/cpumask.h>
extern int check_irq_vectors_for_cpu_disable(void);
extern void fixup_irqs(void);
extern void irq_force_complete_move(int);
extern void irq_force_complete_move(struct irq_desc *desc);
#endif
#ifdef CONFIG_HAVE_KVM
@ -37,7 +39,6 @@ extern void kvm_set_posted_intr_wakeup_handler(void (*handler)(void));
extern void (*x86_platform_ipi_callback)(void);
extern void native_init_IRQ(void);
struct irq_desc;
extern bool handle_irq(struct irq_desc *desc, struct pt_regs *regs);
extern __visible unsigned int do_IRQ(struct pt_regs *regs);

6
arch/x86/include/asm/pgtable_types.h
View File

@ -366,20 +366,18 @@ static inline enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
}
static inline pgprot_t pgprot_4k_2_large(pgprot_t pgprot)
{
pgprotval_t val = pgprot_val(pgprot);
pgprot_t new;
unsigned long val;
val = pgprot_val(pgprot);
pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) |
((val & _PAGE_PAT) << (_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT));
return new;
}
static inline pgprot_t pgprot_large_2_4k(pgprot_t pgprot)
{
pgprotval_t val = pgprot_val(pgprot);
pgprot_t new;
unsigned long val;
val = pgprot_val(pgprot);
pgprot_val(new) = (val & ~(_PAGE_PAT | _PAGE_PAT_LARGE)) |
((val & _PAGE_PAT_LARGE) >>
(_PAGE_BIT_PAT_LARGE - _PAGE_BIT_PAT));

6
arch/x86/kernel/apic/io_apic.c
View File

@ -2521,6 +2521,7 @@ void __init setup_ioapic_dest(void)
{
int pin, ioapic, irq, irq_entry;
const struct cpumask *mask;
struct irq_desc *desc;
struct irq_data *idata;
struct irq_chip *chip;
@ -2536,7 +2537,9 @@ void __init setup_ioapic_dest(void)
if (irq < 0 || !mp_init_irq_at_boot(ioapic, irq))
continue;
idata = irq_get_irq_data(irq);
desc = irq_to_desc(irq);
raw_spin_lock_irq(&desc->lock);
idata = irq_desc_get_irq_data(desc);
/*
* Honour affinities which have been set in early boot
@ -2550,6 +2553,7 @@ void __init setup_ioapic_dest(void)
/* Might be lapic_chip for irq 0 */
if (chip->irq_set_affinity)
chip->irq_set_affinity(idata, mask, false);
raw_spin_unlock_irq(&desc->lock);
}
}
#endif

221
arch/x86/kernel/apic/vector.c
View File

@ -31,7 +31,7 @@ struct apic_chip_data {
struct irq_domain *x86_vector_domain;
EXPORT_SYMBOL_GPL(x86_vector_domain);
static DEFINE_RAW_SPINLOCK(vector_lock);
static cpumask_var_t vector_cpumask;
static cpumask_var_t vector_cpumask, vector_searchmask, searched_cpumask;
static struct irq_chip lapic_controller;
#ifdef CONFIG_X86_IO_APIC
static struct apic_chip_data *legacy_irq_data[NR_IRQS_LEGACY];
@ -118,35 +118,47 @@ static int __assign_irq_vector(int irq, struct apic_chip_data *d,
*/
static int current_vector = FIRST_EXTERNAL_VECTOR + VECTOR_OFFSET_START;
static int current_offset = VECTOR_OFFSET_START % 16;
int cpu, err;
int cpu, vector;
if (d->move_in_progress)
/*
* If there is still a move in progress or the previous move has not
* been cleaned up completely, tell the caller to come back later.
*/
if (d->move_in_progress ||
cpumask_intersects(d->old_domain, cpu_online_mask))
return -EBUSY;
/* Only try and allocate irqs on cpus that are present */
err = -ENOSPC;
cpumask_clear(d->old_domain);
cpumask_clear(searched_cpumask);
cpu = cpumask_first_and(mask, cpu_online_mask);
while (cpu < nr_cpu_ids) {
int new_cpu, vector, offset;
int new_cpu, offset;
/* Get the possible target cpus for @mask/@cpu from the apic */
apic->vector_allocation_domain(cpu, vector_cpumask, mask);
/*
* Clear the offline cpus from @vector_cpumask for searching
* and verify whether the result overlaps with @mask. If true,
* then the call to apic->cpu_mask_to_apicid_and() will
* succeed as well. If not, no point in trying to find a
* vector in this mask.
*/
cpumask_and(vector_searchmask, vector_cpumask, cpu_online_mask);
if (!cpumask_intersects(vector_searchmask, mask))
goto next_cpu;
if (cpumask_subset(vector_cpumask, d->domain)) {
err = 0;
if (cpumask_equal(vector_cpumask, d->domain))
break;
goto success;
/*
* New cpumask using the vector is a proper subset of
* the current in use mask. So cleanup the vector
* allocation for the members that are not used anymore.
* Mark the cpus which are not longer in the mask for
* cleanup.
*/
cpumask_andnot(d->old_domain, d->domain,
vector_cpumask);
d->move_in_progress =
cpumask_intersects(d->old_domain, cpu_online_mask);
cpumask_and(d->domain, d->domain, vector_cpumask);
break;
cpumask_andnot(d->old_domain, d->domain, vector_cpumask);
vector = d->cfg.vector;
goto update;
}
vector = current_vector;
@ -158,45 +170,60 @@ next:
vector = FIRST_EXTERNAL_VECTOR + offset;
}
if (unlikely(current_vector == vector)) {
cpumask_or(d->old_domain, d->old_domain,
vector_cpumask);
cpumask_andnot(vector_cpumask, mask, d->old_domain);
cpu = cpumask_first_and(vector_cpumask,
cpu_online_mask);
continue;
}
/* If the search wrapped around, try the next cpu */
if (unlikely(current_vector == vector))
goto next_cpu;
if (test_bit(vector, used_vectors))
goto next;
for_each_cpu_and(new_cpu, vector_cpumask, cpu_online_mask) {
for_each_cpu(new_cpu, vector_searchmask) {
if (!IS_ERR_OR_NULL(per_cpu(vector_irq, new_cpu)[vector]))
goto next;
}
/* Found one! */
current_vector = vector;
current_offset = offset;
if (d->cfg.vector) {
/* Schedule the old vector for cleanup on all cpus */
if (d->cfg.vector)
cpumask_copy(d->old_domain, d->domain);
d->move_in_progress =
cpumask_intersects(d->old_domain, cpu_online_mask);
}
for_each_cpu_and(new_cpu, vector_cpumask, cpu_online_mask)
for_each_cpu(new_cpu, vector_searchmask)
per_cpu(vector_irq, new_cpu)[vector] = irq_to_desc(irq);
d->cfg.vector = vector;
cpumask_copy(d->domain, vector_cpumask);
err = 0;
break;
}
goto update;
if (!err) {
/* cache destination APIC IDs into cfg->dest_apicid */
err = apic->cpu_mask_to_apicid_and(mask, d->domain,
&d->cfg.dest_apicid);
next_cpu:
/*
* We exclude the current @vector_cpumask from the requested
* @mask and try again with the next online cpu in the
* result. We cannot modify @mask, so we use @vector_cpumask
* as a temporary buffer here as it will be reassigned when
* calling apic->vector_allocation_domain() above.
*/
cpumask_or(searched_cpumask, searched_cpumask, vector_cpumask);
cpumask_andnot(vector_cpumask, mask, searched_cpumask);
cpu = cpumask_first_and(vector_cpumask, cpu_online_mask);
continue;
}
return -ENOSPC;
return err;
update:
/*
* Exclude offline cpus from the cleanup mask and set the
* move_in_progress flag when the result is not empty.
*/
cpumask_and(d->old_domain, d->old_domain, cpu_online_mask);
d->move_in_progress = !cpumask_empty(d->old_domain);
d->cfg.vector = vector;
cpumask_copy(d->domain, vector_cpumask);
success:
/*
* Cache destination APIC IDs into cfg->dest_apicid. This cannot fail
* as we already established, that mask & d->domain & cpu_online_mask
* is not empty.
*/
BUG_ON(apic->cpu_mask_to_apicid_and(mask, d->domain,
&d->cfg.dest_apicid));
return 0;
}
static int assign_irq_vector(int irq, struct apic_chip_data *data,
@ -226,10 +253,8 @@ static int assign_irq_vector_policy(int irq, int node,
static void clear_irq_vector(int irq, struct apic_chip_data *data)
{
struct irq_desc *desc;
unsigned long flags;
int cpu, vector;
raw_spin_lock_irqsave(&vector_lock, flags);
BUG_ON(!data->cfg.vector);
vector = data->cfg.vector;
@ -239,10 +264,13 @@ static void clear_irq_vector(int irq, struct apic_chip_data *data)
data->cfg.vector = 0;
cpumask_clear(data->domain);
if (likely(!data->move_in_progress)) {
raw_spin_unlock_irqrestore(&vector_lock, flags);
/*
* If move is in progress or the old_domain mask is not empty,
* i.e. the cleanup IPI has not been processed yet, we need to remove
* the old references to desc from all cpus vector tables.
*/
if (!data->move_in_progress && cpumask_empty(data->old_domain))
return;
}
desc = irq_to_desc(irq);
for_each_cpu_and(cpu, data->old_domain, cpu_online_mask) {
@ -255,7 +283,6 @@ static void clear_irq_vector(int irq, struct apic_chip_data *data)
}
}
data->move_in_progress = 0;
raw_spin_unlock_irqrestore(&vector_lock, flags);
}
void init_irq_alloc_info(struct irq_alloc_info *info,
@ -276,19 +303,24 @@ void copy_irq_alloc_info(struct irq_alloc_info *dst, struct irq_alloc_info *src)
static void x86_vector_free_irqs(struct irq_domain *domain,
unsigned int virq, unsigned int nr_irqs)
{
struct apic_chip_data *apic_data;
struct irq_data *irq_data;
unsigned long flags;
int i;
for (i = 0; i < nr_irqs; i++) {
irq_data = irq_domain_get_irq_data(x86_vector_domain, virq + i);
if (irq_data && irq_data->chip_data) {
raw_spin_lock_irqsave(&vector_lock, flags);
clear_irq_vector(virq + i, irq_data->chip_data);
free_apic_chip_data(irq_data->chip_data);
apic_data = irq_data->chip_data;
irq_domain_reset_irq_data(irq_data);
raw_spin_unlock_irqrestore(&vector_lock, flags);
free_apic_chip_data(apic_data);
#ifdef CONFIG_X86_IO_APIC
if (virq + i < nr_legacy_irqs())
legacy_irq_data[virq + i] = NULL;
#endif
irq_domain_reset_irq_data(irq_data);
}
}
}
@ -406,6 +438,8 @@ int __init arch_early_irq_init(void)
arch_init_htirq_domain(x86_vector_domain);
BUG_ON(!alloc_cpumask_var(&vector_cpumask, GFP_KERNEL));
BUG_ON(!alloc_cpumask_var(&vector_searchmask, GFP_KERNEL));
BUG_ON(!alloc_cpumask_var(&searched_cpumask, GFP_KERNEL));
return arch_early_ioapic_init();
}
@ -494,14 +528,7 @@ static int apic_set_affinity(struct irq_data *irq_data,
return -EINVAL;
err = assign_irq_vector(irq, data, dest);
if (err) {
if (assign_irq_vector(irq, data,
irq_data_get_affinity_mask(irq_data)))
pr_err("Failed to recover vector for irq %d\n", irq);
return err;
}
return IRQ_SET_MASK_OK;
return err ? err : IRQ_SET_MASK_OK;
}
static struct irq_chip lapic_controller = {
@ -513,20 +540,12 @@ static struct irq_chip lapic_controller = {
#ifdef CONFIG_SMP
static void __send_cleanup_vector(struct apic_chip_data *data)
{
cpumask_var_t cleanup_mask;
if (unlikely(!alloc_cpumask_var(&cleanup_mask, GFP_ATOMIC))) {
unsigned int i;
for_each_cpu_and(i, data->old_domain, cpu_online_mask)
apic->send_IPI_mask(cpumask_of(i),
IRQ_MOVE_CLEANUP_VECTOR);
} else {
cpumask_and(cleanup_mask, data->old_domain, cpu_online_mask);
apic->send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
free_cpumask_var(cleanup_mask);
}
raw_spin_lock(&vector_lock);
cpumask_and(data->old_domain, data->old_domain, cpu_online_mask);
data->move_in_progress = 0;
if (!cpumask_empty(data->old_domain))
apic->send_IPI_mask(data->old_domain, IRQ_MOVE_CLEANUP_VECTOR);
raw_spin_unlock(&vector_lock);
}
void send_cleanup_vector(struct irq_cfg *cfg)
@ -570,12 +589,25 @@ asmlinkage __visible void smp_irq_move_cleanup_interrupt(void)
goto unlock;
/*
* Check if the irq migration is in progress. If so, we
* haven't received the cleanup request yet for this irq.
* Nothing to cleanup if irq migration is in progress
* or this cpu is not set in the cleanup mask.
*/
if (data->move_in_progress)
if (data->move_in_progress ||
!cpumask_test_cpu(me, data->old_domain))
goto unlock;
/*
* We have two cases to handle here:
* 1) vector is unchanged but the target mask got reduced
* 2) vector and the target mask has changed
*
* #1 is obvious, but in #2 we have two vectors with the same
* irq descriptor: the old and the new vector. So we need to
* make sure that we only cleanup the old vector. The new
* vector has the current @vector number in the config and
* this cpu is part of the target mask. We better leave that
* one alone.
*/
if (vector == data->cfg.vector &&
cpumask_test_cpu(me, data->domain))
goto unlock;
@ -593,6 +625,7 @@ asmlinkage __visible void smp_irq_move_cleanup_interrupt(void)
goto unlock;
}
__this_cpu_write(vector_irq[vector], VECTOR_UNUSED);
cpumask_clear_cpu(me, data->old_domain);
unlock:
raw_spin_unlock(&desc->lock);
}
@ -621,12 +654,48 @@ void irq_complete_move(struct irq_cfg *cfg)
__irq_complete_move(cfg, ~get_irq_regs()->orig_ax);
}
void irq_force_complete_move(int irq)
/*
* Called with @desc->lock held and interrupts disabled.
*/
void irq_force_complete_move(struct irq_desc *desc)
{
struct irq_cfg *cfg = irq_cfg(irq);
struct irq_data *irqdata = irq_desc_get_irq_data(desc);
struct apic_chip_data *data = apic_chip_data(irqdata);
struct irq_cfg *cfg = data ? &data->cfg : NULL;
if (cfg)
__irq_complete_move(cfg, cfg->vector);
if (!cfg)
return;
__irq_complete_move(cfg, cfg->vector);
/*
* This is tricky. If the cleanup of @data->old_domain has not been
* done yet, then the following setaffinity call will fail with
* -EBUSY. This can leave the interrupt in a stale state.
*
* The cleanup cannot make progress because we hold @desc->lock. So in
* case @data->old_domain is not yet cleaned up, we need to drop the
* lock and acquire it again. @desc cannot go away, because the
* hotplug code holds the sparse irq lock.
*/
raw_spin_lock(&vector_lock);
/* Clean out all offline cpus (including ourself) first. */
cpumask_and(data->old_domain, data->old_domain, cpu_online_mask);
while (!cpumask_empty(data->old_domain)) {
raw_spin_unlock(&vector_lock);
raw_spin_unlock(&desc->lock);
cpu_relax();
raw_spin_lock(&desc->lock);
/*
* Reevaluate apic_chip_data. It might have been cleared after
* we dropped @desc->lock.
*/
data = apic_chip_data(irqdata);
if (!data)
return;
raw_spin_lock(&vector_lock);
}
raw_spin_unlock(&vector_lock);
}
#endif

5
arch/x86/kernel/apic/x2apic_uv_x.c
View File

@ -889,7 +889,10 @@ void __init uv_system_init(void)
return;
}
pr_info("UV: Found %s hub\n", hub);
map_low_mmrs();
/* We now only need to map the MMRs on UV1 */
if (is_uv1_hub())
map_low_mmrs();
m_n_config.v = uv_read_local_mmr(UVH_RH_GAM_CONFIG_MMR );
m_val = m_n_config.s.m_skt;

7
arch/x86/kernel/cpu/perf_event_intel.c
View File

@ -1960,7 +1960,8 @@ intel_bts_constraints(struct perf_event *event)
static int intel_alt_er(int idx, u64 config)
{
int alt_idx;
int alt_idx = idx;
if (!(x86_pmu.flags & PMU_FL_HAS_RSP_1))
return idx;
@ -2897,14 +2898,12 @@ static void intel_pmu_cpu_starting(int cpu)
return;
if (!(x86_pmu.flags & PMU_FL_NO_HT_SHARING)) {
void **onln = &cpuc->kfree_on_online[X86_PERF_KFREE_SHARED];
for_each_cpu(i, topology_sibling_cpumask(cpu)) {
struct intel_shared_regs *pc;
pc = per_cpu(cpu_hw_events, i).shared_regs;
if (pc && pc->core_id == core_id) {
*onln = cpuc->shared_regs;
cpuc->kfree_on_online[0] = cpuc->shared_regs;
cpuc->shared_regs = pc;
break;
}

3
arch/x86/kernel/cpu/perf_event_intel_uncore.c
View File

@ -995,6 +995,9 @@ static int __init uncore_pci_init(void)
case 87: /* Knights Landing */
ret = knl_uncore_pci_init();
break;
case 94: /* SkyLake */
ret = skl_uncore_pci_init();
break;
default:
return 0;
}

1
arch/x86/kernel/cpu/perf_event_intel_uncore.h
View File

@ -336,6 +336,7 @@ int snb_uncore_pci_init(void);
int ivb_uncore_pci_init(void);
int hsw_uncore_pci_init(void);
int bdw_uncore_pci_init(void);
int skl_uncore_pci_init(void);
void snb_uncore_cpu_init(void);
void nhm_uncore_cpu_init(void);
int snb_pci2phy_map_init(int devid);

20
arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c
View File

@ -8,6 +8,7 @@
#define PCI_DEVICE_ID_INTEL_HSW_IMC 0x0c00
#define PCI_DEVICE_ID_INTEL_HSW_U_IMC 0x0a04
#define PCI_DEVICE_ID_INTEL_BDW_IMC 0x1604
#define PCI_DEVICE_ID_INTEL_SKL_IMC 0x191f
/* SNB event control */
#define SNB_UNC_CTL_EV_SEL_MASK 0x000000ff
@ -524,6 +525,14 @@ static const struct pci_device_id bdw_uncore_pci_ids[] = {
{ /* end: all zeroes */ },
};
static const struct pci_device_id skl_uncore_pci_ids[] = {
{ /* IMC */
PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_IMC),
.driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
},
{ /* end: all zeroes */ },
};
static struct pci_driver snb_uncore_pci_driver = {
.name = "snb_uncore",
.id_table = snb_uncore_pci_ids,
@ -544,6 +553,11 @@ static struct pci_driver bdw_uncore_pci_driver = {
.id_table = bdw_uncore_pci_ids,
};
static struct pci_driver skl_uncore_pci_driver = {
.name = "skl_uncore",
.id_table = skl_uncore_pci_ids,
};
struct imc_uncore_pci_dev {
__u32 pci_id;
struct pci_driver *driver;
@ -558,6 +572,7 @@ static const struct imc_uncore_pci_dev desktop_imc_pci_ids[] = {
IMC_DEV(HSW_IMC, &hsw_uncore_pci_driver), /* 4th Gen Core Processor */
IMC_DEV(HSW_U_IMC, &hsw_uncore_pci_driver), /* 4th Gen Core ULT Mobile Processor */
IMC_DEV(BDW_IMC, &bdw_uncore_pci_driver), /* 5th Gen Core U */
IMC_DEV(SKL_IMC, &skl_uncore_pci_driver), /* 6th Gen Core */
{ /* end marker */ }
};
@ -610,6 +625,11 @@ int bdw_uncore_pci_init(void)
return imc_uncore_pci_init();
}
int skl_uncore_pci_init(void)
{
return imc_uncore_pci_init();
}
/* end of Sandy Bridge uncore support */
/* Nehalem uncore support */

8
arch/x86/kernel/head64.c
View File

@ -192,5 +192,13 @@ void __init x86_64_start_reservations(char *real_mode_data)
reserve_ebda_region();
switch (boot_params.hdr.hardware_subarch) {
case X86_SUBARCH_INTEL_MID:
x86_intel_mid_early_setup();
break;
default:
break;
}
start_kernel();
}

11
arch/x86/kernel/irq.c
View File

@ -462,7 +462,7 @@ void fixup_irqs(void)
* non intr-remapping case, we can't wait till this interrupt
* arrives at this cpu before completing the irq move.
*/
irq_force_complete_move(irq);
irq_force_complete_move(desc);
if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
break_affinity = 1;
@ -470,6 +470,15 @@ void fixup_irqs(void)
}
chip = irq_data_get_irq_chip(data);
/*
* The interrupt descriptor might have been cleaned up
* already, but it is not yet removed from the radix tree
*/
if (!chip) {
raw_spin_unlock(&desc->lock);
continue;
}
if (!irqd_can_move_in_process_context(data) && chip->irq_mask)
chip->irq_mask(data);

4
arch/x86/mm/pageattr.c
View File

@ -33,7 +33,7 @@ struct cpa_data {
pgd_t *pgd;
pgprot_t mask_set;
pgprot_t mask_clr;
int numpages;
unsigned long numpages;
int flags;
unsigned long pfn;
unsigned force_split : 1;
@ -1350,7 +1350,7 @@ static int __change_page_attr_set_clr(struct cpa_data *cpa, int checkalias)
* CPA operation. Either a large page has been
* preserved or a single page update happened.
*/
BUG_ON(cpa->numpages > numpages);
BUG_ON(cpa->numpages > numpages || !cpa->numpages);
numpages -= cpa->numpages;
if (cpa->flags & (CPA_PAGES_ARRAY | CPA_ARRAY))
cpa->curpage++;

17
arch/x86/platform/efi/quirks.c
View File

@ -8,6 +8,7 @@
#include <linux/memblock.h>
#include <linux/bootmem.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <asm/efi.h>
#include <asm/uv/uv.h>
@ -248,6 +249,16 @@ out:
return ret;
}
static const struct dmi_system_id sgi_uv1_dmi[] = {
{ NULL, "SGI UV1",
{ DMI_MATCH(DMI_PRODUCT_NAME, "Stoutland Platform"),
DMI_MATCH(DMI_PRODUCT_VERSION, "1.0"),
DMI_MATCH(DMI_BIOS_VENDOR, "SGI.COM"),
}
},
{ } /* NULL entry stops DMI scanning */
};
void __init efi_apply_memmap_quirks(void)
{
/*
@ -260,10 +271,8 @@ void __init efi_apply_memmap_quirks(void)
efi_unmap_memmap();
}
/*
* UV doesn't support the new EFI pagetable mapping yet.
*/
if (is_uv_system())
/* UV2+ BIOS has a fix for this issue. UV1 still needs the quirk. */
if (dmi_check_system(sgi_uv1_dmi))
set_bit(EFI_OLD_MEMMAP, &efi.flags);
}

8
arch/x86/platform/intel-mid/intel-mid.c
View File

@ -138,7 +138,7 @@ static void intel_mid_arch_setup(void)
intel_mid_ops = get_intel_mid_ops[__intel_mid_cpu_chip]();
else {
intel_mid_ops = get_intel_mid_ops[INTEL_MID_CPU_CHIP_PENWELL]();
pr_info("ARCH: Unknown SoC, assuming PENWELL!\n");
pr_info("ARCH: Unknown SoC, assuming Penwell!\n");
}
out:
@ -214,12 +214,10 @@ static inline int __init setup_x86_intel_mid_timer(char *arg)
else if (strcmp("lapic_and_apbt", arg) == 0)
intel_mid_timer_options = INTEL_MID_TIMER_LAPIC_APBT;
else {
pr_warn("X86 INTEL_MID timer option %s not recognised"
" use x86_intel_mid_timer=apbt_only or lapic_and_apbt\n",
arg);
pr_warn("X86 INTEL_MID timer option %s not recognised use x86_intel_mid_timer=apbt_only or lapic_and_apbt\n",
arg);
return -EINVAL;
}
return 0;
}
__setup("x86_intel_mid_timer=", setup_x86_intel_mid_timer);

18
arch/x86/platform/intel-quark/imr.c
View File

@ -220,11 +220,12 @@ static int imr_dbgfs_state_show(struct seq_file *s, void *unused)
if (imr_is_enabled(&imr)) {
base = imr_to_phys(imr.addr_lo);
end = imr_to_phys(imr.addr_hi) + IMR_MASK;
size = end - base + 1;
} else {
base = 0;
end = 0;
size = 0;
}
size = end - base;
seq_printf(s, "imr%02i: base=%pa, end=%pa, size=0x%08zx "
"rmask=0x%08x, wmask=0x%08x, %s, %s\n", i,
&base, &end, size, imr.rmask, imr.wmask,
@ -579,6 +580,7 @@ static void __init imr_fixup_memmap(struct imr_device *idev)
{
phys_addr_t base = virt_to_phys(&_text);
size_t size = virt_to_phys(&__end_rodata) - base;
unsigned long start, end;
int i;
int ret;
@ -586,18 +588,24 @@ static void __init imr_fixup_memmap(struct imr_device *idev)
for (i = 0; i < idev->max_imr; i++)
imr_clear(i);
start = (unsigned long)_text;
end = (unsigned long)__end_rodata - 1;
/*
* Setup a locked IMR around the physical extent of the kernel
* from the beginning of the .text secton to the end of the
* .rodata section as one physically contiguous block.
*
* We don't round up @size since it is already PAGE_SIZE aligned.
* See vmlinux.lds.S for details.
*/
ret = imr_add_range(base, size, IMR_CPU, IMR_CPU, true);
if (ret < 0) {
pr_err("unable to setup IMR for kernel: (%p - %p)\n",
&_text, &__end_rodata);
pr_err("unable to setup IMR for kernel: %zu KiB (%lx - %lx)\n",
size / 1024, start, end);
} else {
pr_info("protecting kernel .text - .rodata: %zu KiB (%p - %p)\n",
size / 1024, &_text, &__end_rodata);
pr_info("protecting kernel .text - .rodata: %zu KiB (%lx - %lx)\n",
size / 1024, start, end);
}
}

26
block/blk-merge.c
View File

@ -70,6 +70,18 @@ static struct bio *blk_bio_write_same_split(struct request_queue *q,
return bio_split(bio, q->limits.max_write_same_sectors, GFP_NOIO, bs);
}
static inline unsigned get_max_io_size(struct request_queue *q,
struct bio *bio)
{
unsigned sectors = blk_max_size_offset(q, bio->bi_iter.bi_sector);
unsigned mask = queue_logical_block_size(q) - 1;
/* aligned to logical block size */
sectors &= ~(mask >> 9);
return sectors;
}
static struct bio *blk_bio_segment_split(struct request_queue *q,
struct bio *bio,
struct bio_set *bs,
@ -81,6 +93,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
unsigned front_seg_size = bio->bi_seg_front_size;
bool do_split = true;
struct bio *new = NULL;
const unsigned max_sectors = get_max_io_size(q, bio);
bio_for_each_segment(bv, bio, iter) {
/*
@ -90,20 +103,19 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
if (bvprvp && bvec_gap_to_prev(q, bvprvp, bv.bv_offset))
goto split;
if (sectors + (bv.bv_len >> 9) >
blk_max_size_offset(q, bio->bi_iter.bi_sector)) {
if (sectors + (bv.bv_len >> 9) > max_sectors) {
/*
* Consider this a new segment if we're splitting in
* the middle of this vector.
*/
if (nsegs < queue_max_segments(q) &&
sectors < blk_max_size_offset(q,
bio->bi_iter.bi_sector)) {
sectors < max_sectors) {
nsegs++;
sectors = blk_max_size_offset(q,
bio->bi_iter.bi_sector);
sectors = max_sectors;
}
goto split;
if (sectors)
goto split;
/* Make this single bvec as the 1st segment */
}
if (bvprvp && blk_queue_cluster(q)) {

8
drivers/acpi/video_detect.c
View File

@ -135,14 +135,6 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
},
},
{
.callback = video_detect_force_vendor,
.ident = "Dell Inspiron 5737",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5737"),
},
},
/*
* These models have a working acpi_video backlight control, and using

2
drivers/base/platform-msi.c
View File

@ -284,6 +284,7 @@ out_free_priv_data:
return err;
}
EXPORT_SYMBOL_GPL(platform_msi_domain_alloc_irqs);
/**
* platform_msi_domain_free_irqs - Free MSI interrupts for @dev
@ -301,6 +302,7 @@ void platform_msi_domain_free_irqs(struct device *dev)
msi_domain_free_irqs(dev->msi_domain, dev);
platform_msi_free_descs(dev, 0, MAX_DEV_MSIS);
}
EXPORT_SYMBOL_GPL(platform_msi_domain_free_irqs);
/**
* platform_msi_get_host_data - Query the private data associated with

13
drivers/base/platform.c
View File

@ -558,10 +558,15 @@ static int platform_drv_probe(struct device *_dev)
return ret;
ret = dev_pm_domain_attach(_dev, true);
if (ret != -EPROBE_DEFER && drv->probe) {
ret = drv->probe(dev);
if (ret)
dev_pm_domain_detach(_dev, true);
if (ret != -EPROBE_DEFER) {
if (drv->probe) {
ret = drv->probe(dev);
if (ret)
dev_pm_domain_detach(_dev, true);
} else {
/* don't fail if just dev_pm_domain_attach failed */
ret = 0;
}
}
if (drv->prevent_deferred_probe && ret == -EPROBE_DEFER) {

37
drivers/base/power/domain.c
View File

@ -162,7 +162,7 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool timed)
/**
* genpd_queue_power_off_work - Queue up the execution of genpd_poweroff().
* @genpd: PM domait to power off.
* @genpd: PM domain to power off.
*
* Queue up the execution of genpd_poweroff() unless it's already been done
* before.
@ -172,16 +172,15 @@ static void genpd_queue_power_off_work(struct generic_pm_domain *genpd)
queue_work(pm_wq, &genpd->power_off_work);
}
static int genpd_poweron(struct generic_pm_domain *genpd);
/**
* __genpd_poweron - Restore power to a given PM domain and its masters.
* @genpd: PM domain to power up.
* @depth: nesting count for lockdep.
*
* Restore power to @genpd and all of its masters so that it is possible to
* resume a device belonging to it.
*/
static int __genpd_poweron(struct generic_pm_domain *genpd)
static int __genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth)
{
struct gpd_link *link;
int ret = 0;
@ -196,11 +195,16 @@ static int __genpd_poweron(struct generic_pm_domain *genpd)
* with it.
*/
list_for_each_entry(link, &genpd->slave_links, slave_node) {
genpd_sd_counter_inc(link->master);
struct generic_pm_domain *master = link->master;
genpd_sd_counter_inc(master);
mutex_lock_nested(&master->lock, depth + 1);
ret = __genpd_poweron(master, depth + 1);
mutex_unlock(&master->lock);
ret = genpd_poweron(link->master);
if (ret) {
genpd_sd_counter_dec(link->master);
genpd_sd_counter_dec(master);
goto err;
}
}
@ -232,11 +236,12 @@ static int genpd_poweron(struct generic_pm_domain *genpd)
int ret;
mutex_lock(&genpd->lock);
ret = __genpd_poweron(genpd);
ret = __genpd_poweron(genpd, 0);
mutex_unlock(&genpd->lock);
return ret;
}
static int genpd_save_dev(struct generic_pm_domain *genpd, struct device *dev)
{
return GENPD_DEV_CALLBACK(genpd, int, save_state, dev);
@ -484,7 +489,7 @@ static int pm_genpd_runtime_resume(struct device *dev)
}
mutex_lock(&genpd->lock);
ret = __genpd_poweron(genpd);
ret = __genpd_poweron(genpd, 0);
mutex_unlock(&genpd->lock);
if (ret)
@ -1339,8 +1344,8 @@ int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
if (!link)
return -ENOMEM;
mutex_lock(&genpd->lock);
mutex_lock_nested(&subdomain->lock, SINGLE_DEPTH_NESTING);
mutex_lock(&subdomain->lock);
mutex_lock_nested(&genpd->lock, SINGLE_DEPTH_NESTING);
if (genpd->status == GPD_STATE_POWER_OFF
&& subdomain->status != GPD_STATE_POWER_OFF) {
@ -1363,8 +1368,8 @@ int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
genpd_sd_counter_inc(genpd);
out:
mutex_unlock(&subdomain->lock);
mutex_unlock(&genpd->lock);
mutex_unlock(&subdomain->lock);
if (ret)
kfree(link);
return ret;
@ -1385,7 +1390,8 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(subdomain))
return -EINVAL;
mutex_lock(&genpd->lock);
mutex_lock(&subdomain->lock);
mutex_lock_nested(&genpd->lock, SINGLE_DEPTH_NESTING);
if (!list_empty(&subdomain->slave_links) || subdomain->device_count) {
pr_warn("%s: unable to remove subdomain %s\n", genpd->name,
@ -1398,22 +1404,19 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
if (link->slave != subdomain)
continue;
mutex_lock_nested(&subdomain->lock, SINGLE_DEPTH_NESTING);
list_del(&link->master_node);
list_del(&link->slave_node);
kfree(link);
if (subdomain->status != GPD_STATE_POWER_OFF)
genpd_sd_counter_dec(genpd);
mutex_unlock(&subdomain->lock);
ret = 0;
break;
}
out:
mutex_unlock(&genpd->lock);
mutex_unlock(&subdomain->lock);
return ret;
}

12
drivers/clocksource/Kconfig
View File

@ -30,6 +30,8 @@ config CLKSRC_MMIO
config DIGICOLOR_TIMER
bool "Digicolor timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
select CLKSRC_MMIO
depends on HAS_IOMEM
help
Enables the support for the digicolor timer driver.
@ -55,6 +57,7 @@ config ARMADA_370_XP_TIMER
bool "Armada 370 and XP timer driver" if COMPILE_TEST
depends on ARM
select CLKSRC_OF
select CLKSRC_MMIO
help
Enables the support for the Armada 370 and XP timer driver.
@ -76,6 +79,7 @@ config ORION_TIMER
config SUN4I_TIMER
bool "Sun4i timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
select CLKSRC_MMIO
help
Enables support for the Sun4i timer.
@ -89,6 +93,7 @@ config SUN5I_HSTIMER
config TEGRA_TIMER
bool "Tegra timer driver" if COMPILE_TEST
select CLKSRC_MMIO
depends on ARM
help
Enables support for the Tegra driver.
@ -96,6 +101,7 @@ config TEGRA_TIMER
config VT8500_TIMER
bool "VT8500 timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
help
Enables support for the VT8500 driver.
@ -131,6 +137,7 @@ config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
config CLKSRC_DBX500_PRCMU
bool "Clocksource PRCMU Timer" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
help
Use the always on PRCMU Timer as clocksource
@ -248,6 +255,7 @@ config CLKSRC_EXYNOS_MCT
config CLKSRC_SAMSUNG_PWM
bool "PWM timer drvier for Samsung S3C, S5P" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
help
This is a new clocksource driver for the PWM timer found in
Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
@ -257,12 +265,14 @@ config CLKSRC_SAMSUNG_PWM
config FSL_FTM_TIMER
bool "Freescale FlexTimer Module driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
select CLKSRC_MMIO
help
Support for Freescale FlexTimer Module (FTM) timer.
config VF_PIT_TIMER
bool
select CLKSRC_MMIO
help
Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
@ -360,6 +370,7 @@ config CLKSRC_TANGO_XTAL
config CLKSRC_PXA
bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on HAS_IOMEM
select CLKSRC_MMIO
help
This enables OST0 support available on PXA and SA-11x0
@ -394,6 +405,7 @@ config CLKSRC_ST_LPC
bool "Low power clocksource found in the LPC" if COMPILE_TEST
select CLKSRC_OF if OF
depends on HAS_IOMEM
select CLKSRC_MMIO
help
Enable this option to use the Low Power controller timer
as clocksource.

3
drivers/clocksource/tcb_clksrc.c
View File

@ -98,7 +98,8 @@ static int tc_shutdown(struct clock_event_device *d)
__raw_writel(0xff, regs + ATMEL_TC_REG(2, IDR));
__raw_writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
clk_disable(tcd->clk);
if (!clockevent_state_detached(d))
clk_disable(tcd->clk);
return 0;
}

15
drivers/cpufreq/cpufreq-dt.c
View File

@ -142,15 +142,16 @@ static int allocate_resources(int cpu, struct device **cdev,
try_again:
cpu_reg = regulator_get_optional(cpu_dev, reg);
if (IS_ERR(cpu_reg)) {
ret = PTR_ERR_OR_ZERO(cpu_reg);
if (ret) {
/*
* If cpu's regulator supply node is present, but regulator is
* not yet registered, we should try defering probe.
*/
if (PTR_ERR(cpu_reg) == -EPROBE_DEFER) {
if (ret == -EPROBE_DEFER) {
dev_dbg(cpu_dev, "cpu%d regulator not ready, retry\n",
cpu);
return -EPROBE_DEFER;
return ret;
}
/* Try with "cpu-supply" */
@ -159,18 +160,16 @@ try_again:
goto try_again;
}
dev_dbg(cpu_dev, "no regulator for cpu%d: %ld\n",
cpu, PTR_ERR(cpu_reg));
dev_dbg(cpu_dev, "no regulator for cpu%d: %d\n", cpu, ret);
}
cpu_clk = clk_get(cpu_dev, NULL);
if (IS_ERR(cpu_clk)) {
ret = PTR_ERR_OR_ZERO(cpu_clk);
if (ret) {
/* put regulator */
if (!IS_ERR(cpu_reg))
regulator_put(cpu_reg);
ret = PTR_ERR(cpu_clk);
/*
* If cpu's clk node is present, but clock is not yet
* registered, we should try defering probe.

6
drivers/cpufreq/cpufreq.c
View File

@ -48,11 +48,11 @@ static struct cpufreq_policy *next_policy(struct cpufreq_policy *policy,
bool active)
{
do {
policy = list_next_entry(policy, policy_list);
/* No more policies in the list */
if (&policy->policy_list == &cpufreq_policy_list)
if (list_is_last(&policy->policy_list, &cpufreq_policy_list))
return NULL;
policy = list_next_entry(policy, policy_list);
} while (!suitable_policy(policy, active));
return policy;

11
drivers/cpufreq/cpufreq_governor.c
View File

@ -387,16 +387,18 @@ static int cpufreq_governor_init(struct cpufreq_policy *policy,
if (!have_governor_per_policy())
cdata->gdbs_data = dbs_data;
policy->governor_data = dbs_data;
ret = sysfs_create_group(get_governor_parent_kobj(policy),
get_sysfs_attr(dbs_data));
if (ret)
goto reset_gdbs_data;
policy->governor_data = dbs_data;
return 0;
reset_gdbs_data:
policy->governor_data = NULL;
if (!have_governor_per_policy())
cdata->gdbs_data = NULL;
cdata->exit(dbs_data, !policy->governor->initialized);
@ -417,16 +419,19 @@ static int cpufreq_governor_exit(struct cpufreq_policy *policy,
if (!cdbs->shared || cdbs->shared->policy)
return -EBUSY;
policy->governor_data = NULL;
if (!--dbs_data->usage_count) {
sysfs_remove_group(get_governor_parent_kobj(policy),
get_sysfs_attr(dbs_data));
policy->governor_data = NULL;
if (!have_governor_per_policy())
cdata->gdbs_data = NULL;
cdata->exit(dbs_data, policy->governor->initialized == 1);
kfree(dbs_data);
} else {
policy->governor_data = NULL;
}
free_common_dbs_info(policy, cdata);

2
drivers/cpufreq/pxa2xx-cpufreq.c
View File

@ -202,7 +202,7 @@ static void __init pxa_cpufreq_init_voltages(void)
}
}
#else
static int pxa_cpufreq_change_voltage(struct pxa_freqs *pxa_freq)
static int pxa_cpufreq_change_voltage(const struct pxa_freqs *pxa_freq)
{
return 0;
}

1
drivers/cpuidle/coupled.c
View File

@ -119,7 +119,6 @@ struct cpuidle_coupled {
#define CPUIDLE_COUPLED_NOT_IDLE (-1)
static DEFINE_MUTEX(cpuidle_coupled_lock);
static DEFINE_PER_CPU(struct call_single_data, cpuidle_coupled_poke_cb);
/*

2
drivers/cpuidle/cpuidle.c
View File

@ -153,7 +153,7 @@ int cpuidle_enter_freeze(struct cpuidle_driver *drv, struct cpuidle_device *dev)
* be frozen safely.
*/
index = find_deepest_state(drv, dev, UINT_MAX, 0, true);
if (index >= 0)
if (index > 0)
enter_freeze_proper(drv, dev, index);
return index;

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