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linux/arch/powerpc/kernel
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Rohan McLure efe1691ac8 powerpc/64e: Clear gprs on interrupt routine entry on Book3E 
Zero GPRS r14-r31 on entry into the kernel for interrupt sources to
limit influence of user-space values in potential speculation gadgets.
Prior to this commit, all other GPRS are reassigned during the common
prologue to interrupt handlers and so need not be zeroised explicitly.

This may be done safely, without loss of register state prior to the
interrupt, as the common prologue saves the initial values of
non-volatiles, which are unconditionally restored in interrupt_64.S.
Mitigation defaults to enabled by INTERRUPT_SANITIZE_REGISTERS.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221201071019.1953023-6-rmclure@linux.ibm.com
2022-12-02 20:46:08 +11:00
..
ptrace
powerpc: Fix all occurences of duplicate words
2022-07-25 12:05:15 +10:00
syscalls
powerpc/32: fix syscall wrappers with 64-bit arguments
2022-11-01 10:24:09 +11:00
trace
powerpc: add definition for pt_regs offset within an interrupt frame
2022-12-02 17:54:08 +11:00
vdso
powerpc: Drops STABS_DEBUG from linker scripts
2022-09-30 18:35:52 +10:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
85xx_entry_mapping.S
powerpc: Remove CONFIG_FSL_BOOKE
2022-09-26 22:47:37 +10:00
align.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
asm-offsets.c
powerpc: add a define for the switch frame size and regs offset
2022-12-02 17:54:08 +11:00
audit.c
Revert "powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC"
2021-10-27 22:30:32 +11:00
btext.c
powerpc: Fix all occurences of duplicate words
2022-07-25 12:05:15 +10:00
cacheinfo.c
powerpc: Remove asm/prom.h from all files that don't need it
2022-05-08 22:15:04 +10:00
cacheinfo.h
powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild
2019-06-15 16:52:06 +10:00
compat_audit.c
Revert "powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC"
2021-10-27 22:30:32 +11:00
cpu_setup_6xx.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
cpu_setup_44x.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cpu_setup_e500.S
powerpc: Remove CONFIG_PPC_BOOK3E_MMU
2022-09-26 23:00:14 +10:00
cpu_setup_pa6t.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
cpu_setup_power.c
powerpc/cputable: Move __cpu_setup() prototypes out of cputable.h
2022-09-26 22:26:49 +10:00
cpu_setup_ppc970.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cpu_specs_8xx.h
powerpc/cputable: Split cpu_specs[] out of cputable.h
2022-09-26 22:47:13 +10:00
cpu_specs_40x.h
powerpc/cputable: Split cpu_specs[] out of cputable.h
2022-09-26 22:47:13 +10:00
cpu_specs_44x.h
powerpc/cputable: Split cpu_specs[] out of cputable.h
2022-09-26 22:47:13 +10:00
cpu_specs_47x.h
powerpc/cputable: Split cpu_specs[] out of cputable.h
2022-09-26 22:47:13 +10:00
cpu_specs_85xx.h
powerpc/cputable: Split cpu_specs[] for mpc85xx and e500mc
2022-09-26 23:00:05 +10:00
cpu_specs_book3s_32.h
powerpc/cputable: Split cpu_specs[] out of cputable.h
2022-09-26 22:47:13 +10:00
cpu_specs_book3s_64.h
powerpc/cputable: Split cpu_specs[] out of cputable.h
2022-09-26 22:47:13 +10:00
cpu_specs_e500mc.h
powerpc/cputable: Split cpu_specs[] for mpc85xx and e500mc
2022-09-26 23:00:05 +10:00
cpu_specs.h
powerpc/cputable: Split cpu_specs[] for mpc85xx and e500mc
2022-09-26 23:00:05 +10:00
cputable.c
powerpc/cputable: Split cpu_specs[] out of cputable.h
2022-09-26 22:47:13 +10:00
crash_dump.c
powerpc updates for 5.19
2022-05-28 11:27:17 -07:00
dawr.c
powerpc: Include asm/firmware.h in all users of firmware_has_feature()
2022-06-29 16:45:05 +10:00
dbell.c
powerpc/64s/interrupt: Don't enable MSR[EE] in irq handlers unless perf is in use
2021-12-16 21:31:45 +11:00
dma-iommu.c
powerpc/iommu: Report the correct most efficient DMA mask for PCI devices
2021-09-30 17:10:17 +10:00
dma-mask.c
dma-mapping, powerpc: simplify the arch dma_set_mask override
2019-02-18 22:41:03 +11:00
dma-swiotlb.c
swiotlb: add a SWIOTLB_ANY flag to lift the low memory restriction
2022-04-18 07:21:12 +02:00
dt_cpu_ftrs.c
powerpc: move from strlcpy with unused retval to strscpy
2022-08-26 11:02:20 +10:00
early_32.c
powerpc: Move C prototypes out of asm-prototypes.h
2022-03-08 22:06:25 +11:00
eeh_cache.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
eeh_driver.c
powerpc: Fix all occurences of duplicate words
2022-07-25 12:05:15 +10:00
eeh_event.c
powerpc: fix typos in comments
2022-05-05 22:12:44 +10:00
eeh_pe.c
powerpc: Fix all occurences of "the the"
2022-05-22 15:59:43 +10:00
eeh_sysfs.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
eeh.c
powerpc: fix typos in comments
2022-05-05 22:12:44 +10:00
entry_32.S
powerpc: add a define for the switch frame size and regs offset
2022-12-02 17:54:08 +11:00
entry_64.S
powerpc: Remove CONFIG_PPC_BOOK3E
2022-09-26 23:00:13 +10:00
epapr_hcalls.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
epapr_paravirt.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
exceptions-64e.S
powerpc/64e: Clear gprs on interrupt routine entry on Book3E
2022-12-02 20:46:08 +11:00
exceptions-64s.S
powerpc/64s: Zeroise gprs on interrupt routine entry on Book3S
2022-12-02 20:46:05 +11:00
fadump.c
powerpc updates for 5.19
2022-05-28 11:27:17 -07:00
firmware.c
powerpc: fix unbalanced node refcount in check_kvm_guest()
2021-10-09 00:15:59 +11:00
fpu.S
powerpc/64s/interrupt: handle MSR EE and RI in interrupt entry wrapper
2021-12-16 21:31:45 +11:00
head_8xx.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
head_32.h
powerpc: add a definition for the marker offset within the interrupt frame
2022-12-02 17:54:08 +11:00
head_40x.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
head_44x.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
head_64.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
head_85xx.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
head_book3s_32.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
head_booke.h
powerpc: add a definition for the marker offset within the interrupt frame
2022-12-02 17:54:08 +11:00
hw_breakpoint_constraints.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
hw_breakpoint.c
powerpc/8xx: Fix warning in hw_breakpoint_handler()
2022-11-24 23:31:49 +11:00
idle_6xx.S
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
idle_64e.S
powerpc: add ISA v3.0 / v3.1 wait opcode macro
2022-09-28 19:22:10 +10:00
idle_85xx.S
powerpc: Cleanup idle for e500
2022-09-26 23:00:14 +10:00
idle_book3s.S
powerpc/idle: Don't corrupt back chain when going idle
2021-10-20 21:37:58 +11:00
idle.c
powerpc/idle: Fix return value of __setup() handler
2022-05-04 19:37:46 +10:00
ima_arch.c
powerpc/ima: Fix secure boot rules in ima arch policy
2020-05-07 17:25:54 +10:00
interrupt_64.S
powerpc/64s: Zeroise gprs on interrupt routine entry on Book3S
2022-12-02 20:46:05 +11:00
interrupt.c
powerpc/64s/interrupt: Perf NMI should not take normal exit path
2022-10-18 22:46:19 +11:00
io-workarounds.c
powerpc: Fix reverse map real-mode address lookup with huge vmalloc
2021-05-28 22:54:27 +10:00
io.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
iomap.c
powerpc: inline iomap accessors
2020-12-04 01:01:09 +11:00
iommu.c
powerpc/iommu: Fix iommu_table_in_use for a small default DMA window case
2022-07-28 16:22:13 +10:00
irq_64.c
powerpc/64/irq: tidy soft-masked irq replay and improve documentation
2022-09-28 19:22:11 +10:00
irq.c
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
isa-bridge.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
jump_label.c
powerpc: Don't use 'struct ppc_inst' to reference instruction location
2021-06-17 00:09:00 +10:00
kdebugfs.c
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
kgdb.c
powerpc: add definition for pt_regs offset within an interrupt frame
2022-12-02 17:54:08 +11:00
kprobes-ftrace.c
ftrace: disable preemption when recursion locked
2021-10-27 11:21:49 -04:00
kprobes.c
powerpc/kprobes: Use preempt_enable() rather than the no_resched variant
2022-11-24 23:31:49 +11:00
kvm_emul.S
powerpc/kvm: Add ifdefs around template code
2019-09-14 00:04:40 +10:00
kvm.c
powerpc: Remove CONFIG_PPC_BOOK3E_MMU
2022-09-26 23:00:14 +10:00
l2cr_6xx.S
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
legacy_serial.c
powerpc/kernel: Add missing of_node_put() in legacy_serial.c
2022-09-05 17:28:26 +10:00
Makefile
powerpc/32: fix syscall wrappers with 64-bit arguments of unaligned register-pairs
2022-10-13 00:49:58 +11:00
mce_power.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
mce.c
powerpc/mce: use early_cpu_to_node() in mce_init()
2022-07-27 21:36:04 +10:00
misc_32.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
misc_64.S
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
misc.S
powerpc: Avoid link stack corruption in misc asm functions
2021-08-25 13:35:47 +10:00
module_32.c
powerpc/modules: Use PPC_LI macros instead of opencoding
2022-05-22 15:58:27 +10:00
module_64.c
powerpc/64: Add module check for ELF ABI version
2022-12-02 17:54:07 +11:00
module.c
powerpc: Replace PPC64_ELF_ABI_v{1/2} by CONFIG_PPC64_ELF_ABI_V{1/2}
2022-05-19 23:11:29 +10:00
msi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
note.S
powerpc: Add PowerPC Capabilities ELF note
2019-08-30 09:40:15 +10:00
nvram_64.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
of_platform.c
powerpc/eeh: Remove eeh_dev_phb_init_dynamic()
2020-07-26 23:34:19 +10:00
optprobes_head.S
powerpc: add definition for pt_regs offset within an interrupt frame
2022-12-02 17:54:08 +11:00
optprobes.c
powerpc/kprobes: Have optimized_callback() use preempt_enable()
2022-11-24 23:31:49 +11:00
paca.c
powerpc: Remove CONFIG_PPC_BOOK3E
2022-09-26 23:00:13 +10:00
pci_32.c
powerpc/pci: Enable PCI domains in /proc when PCI bus numbers are not unique
2022-08-25 17:47:08 +10:00
pci_64.c
powerpc/pci: Hide pci_device_from_OF_node() for non-powermac code
2022-07-27 21:36:03 +10:00
pci_dn.c
powerpc/pci_dn: Add missing of_node_put()
2022-09-05 17:30:25 +10:00
pci_of_scan.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
pci-common.c
powerpc/pci-common: Fix refcount bug for 'phb->dn'
2022-09-05 17:30:29 +10:00
pci-hotplug.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
pmc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ppc_save_regs.S
powerpc: add definition for pt_regs offset within an interrupt frame
2022-12-02 17:54:08 +11:00
proc_powerpc.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
process.c
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
prom_init_check.sh
powerpc/64: Remove unused prom_init_toc symbols
2022-09-26 20:58:16 +10:00
prom_init.c
powerpc/prom_init: drop PROM_BUG()
2022-09-26 20:58:18 +10:00
prom_parse.c
…
prom.c
powerpc: Add device-tree model to the hardware description
2022-09-30 18:35:53 +10:00
reloc_32.S
powerpc: Avoid link stack corruption in misc asm functions
2021-08-25 13:35:47 +10:00
reloc_64.S
powerpc/64: avoid using r13 in relocate
2022-09-28 19:22:13 +10:00
rtas_entry.S
powerpc/rtas: Fix RTAS MSR[HV] handling for Cell
2022-08-26 08:41:54 +10:00
rtas_flash.c
powerpc: fix typos in comments
2022-05-05 22:12:44 +10:00
rtas_pci.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
rtas-proc.c
powerpc: Add missing headers
2022-05-08 22:15:40 +10:00
rtas-rtc.c
powerpc: Remove asm/prom.h from all files that don't need it
2022-05-08 22:15:04 +10:00
rtas.c
powerpc/rtas: block error injection when locked down
2022-09-28 19:22:14 +10:00
rtasd.c
powerpc: Remove asm/prom.h from all files that don't need it
2022-05-08 22:15:04 +10:00
secure_boot.c
powerpc/pseries: Detect secure and trusted boot state of the system.
2020-07-16 14:49:53 +10:00
security.c
powerpc: Remove CONFIG_PPC_FSL_BOOK3E
2022-09-26 23:00:13 +10:00
secvar-ops.c
powerpc/powernv: Add OPAL API interface to access secure variable
2019-11-13 00:33:22 +11:00
secvar-sysfs.c
powerpc/secvar: fix refcount leak in format_show()
2022-03-08 22:07:41 +11:00
setup_32.c
powerpc: Change CONFIG_E500 to CONFIG_PPC_E500
2022-09-26 23:00:13 +10:00
setup_64.c
powerpc/64s/interrupt: halt early boot interrupts if paca is not set up
2022-09-28 19:22:13 +10:00
setup-common.c
powerpc: Add hardware description string
2022-09-30 18:35:52 +10:00
setup.h
powerpc: Remove CONFIG_PPC_BOOK3E
2022-09-26 23:00:13 +10:00
signal_32.c
powerpc: Include all arch-specific syscall prototypes
2022-09-28 19:22:08 +10:00
signal_64.c
powerpc/signal: Update comment for clarity
2022-07-28 16:22:14 +10:00
signal.c
powerpc/signal: Report minimum signal frame size to userspace via AT_MINSIGSTKSZ
2022-05-19 23:11:26 +10:00
signal.h
powerpc: Don't add __powerpc_ prefix to syscall entry points
2022-10-07 00:59:54 +11:00
smp-tbsync.c
…
smp.c
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
stacktrace.c
powerpc: allow minimum sized kernel stack frames
2022-12-02 17:54:09 +11:00
static_call.c
powerpc/32: Add support for out-of-line static calls
2021-10-22 15:22:05 +11:00
suspend.c
PM: hibernate: powerpc: Expose pfn_is_nosave() prototype
2019-06-14 10:48:56 +02:00
swsusp_32.S
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
swsusp_64.c
powerpc/machdep: Remove stale functions from ppc_md structure
2021-10-22 15:22:05 +11:00
swsusp_85xx.S
powerpc: Remove CONFIG_FSL_BOOKE
2022-09-26 22:47:37 +10:00
swsusp_asm64.S
powerpc/64: asm use consistent global variable declaration and access
2022-09-28 19:22:12 +10:00
swsusp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sys_ppc32.c
powerpc/32: fix syscall wrappers with 64-bit arguments
2022-11-01 10:24:09 +11:00
syscall.c
powerpc: Provide syscall wrapper
2022-09-28 19:22:09 +10:00
syscalls.c
powerpc: Adopt SYSCALL_DEFINE for arch-specific syscall handlers
2022-09-28 19:22:08 +10:00
sysfs.c
powerpc: Remove CONFIG_PPC_FSL_BOOK3E
2022-09-26 23:00:13 +10:00
systbl.c
powerpc: Don't add __powerpc_ prefix to syscall entry points
2022-10-07 00:59:54 +11:00
tau_6xx.c
powerpc: Move C prototypes out of asm-prototypes.h
2022-03-08 22:06:25 +11:00
time.c
powerpc: remove the last remnants of cputime_t
2022-11-24 23:31:48 +11:00
tm.S
powerpc: add definition for pt_regs offset within an interrupt frame
2022-12-02 17:54:08 +11:00
traps.c
powerpc/64s: early boot machine check handler
2022-09-28 19:22:13 +10:00
ucall.S
powerpc/kernel: Add ucall_norets() ultravisor call handler
2019-08-30 09:40:15 +10:00
udbg_16550.c
powerpc: Add support for early debugging via Serial 16550 console
2022-09-28 19:22:09 +10:00
udbg.c
powerpc: Add support for early debugging via Serial 16550 console
2022-09-28 19:22:09 +10:00
uprobes.c
powerpc: Reject probes on instructions that can't be single stepped
2022-05-06 00:00:20 +10:00
vdso32_wrapper.S
powerpc/vdso: Merge vdso64 and vdso32 into a single directory
2022-02-12 22:47:43 +11:00
vdso64_wrapper.S
powerpc/vdso: Merge vdso64 and vdso32 into a single directory
2022-02-12 22:47:43 +11:00
vdso.c
- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
2022-10-10 17:53:04 -07:00
vecemu.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
vector.S
powerpc/64: asm use consistent global variable declaration and access
2022-09-28 19:22:12 +10:00
vmlinux.lds.S
powerpc: Fix writable sections being moved into the rodata region
2022-11-16 21:37:14 +11:00
watchdog.c
powerpc/watchdog: introduce a NMI watchdog's factor
2022-07-27 21:36:02 +10:00