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Mark Cave-Ayland fe1ef6bcdb powerpc: Fix 32-bit KVM-PR lockup and host crash with MacOS guest 
Commit 8792468da5e1 "powerpc: Add the ability to save FPU without
giving it up" unexpectedly removed the MSR_FE0 and MSR_FE1 bits from
the bitmask used to update the MSR of the previous thread in
__giveup_fpu() causing a KVM-PR MacOS guest to lockup and panic the
host kernel.

Leaving FE0/1 enabled means unrelated processes might receive FPEs
when they're not expecting them and crash. In particular if this
happens to init the host will then panic.

eg (transcribed):
  qemu-system-ppc[837]: unhandled signal 8 at 12cc9ce4 nip 12cc9ce4 lr 12cc9ca4 code 0
  systemd[1]: unhandled signal 8 at 202f02e0 nip 202f02e0 lr 001003d4 code 0
  Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

Reinstate these bits to the MSR bitmask to enable MacOS guests to run
under 32-bit KVM-PR once again without issue.

Fixes: 8792468da5e1 ("powerpc: Add the ability to save FPU without giving it up")
Cc: stable@vger.kernel.org # v4.6+
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-02-22 00:10:15 +11:00
..
syscalls
powerpc: add system call table generation support
2018-12-21 14:46:50 +11:00
trace
powerpc/syscalls: Fix syscall tracing
2019-01-15 21:32:25 +11:00
vdso32
powerpc/vdso: Correct call frame information
2018-09-14 13:47:31 +10:00
vdso64
powerpc/vdso: Correct call frame information
2018-09-14 13:47:31 +10:00
.gitignore
…
align.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
asm-offsets.c
powerpc updates for 4.20
2018-10-26 14:36:21 -07:00
audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
btext.c
powerpc: Rework btext_find_display to use of_stdout and device_type helpers
2018-11-26 22:33:37 +11:00
cacheinfo.c
powerpc: Use device_type helpers to access the node type
2018-11-26 22:33:37 +11:00
cacheinfo.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cpu_setup_6xx.S
powerpc: change CONFIG_6xx to CONFIG_PPC_BOOK3S_32
2018-11-26 22:33:37 +11:00
cpu_setup_44x.S
…
cpu_setup_fsl_booke.S
powerpc/mm: move platform specific mmu-xxx.h in platform directories
2018-12-04 19:45:01 +11:00
cpu_setup_pa6t.S
…
cpu_setup_power.S
powerpc: Turn off CPU_FTR_P9_TM_HV_ASSIST in non-hypervisor mode
2018-10-09 16:04:27 +11:00
cpu_setup_ppc970.S
…
cputable.c
powerpc/83xx: handle machine check caused by watchdog timer
2018-12-21 20:56:41 -06:00
crash_dump.c
powerpc: don't use ioremap_prot() nor __ioremap() unless really needed.
2018-10-14 18:04:09 +11:00
crash.c
powerpc: remove kdump.h from page.h
2018-07-30 22:47:53 +10:00
dbell.c
powerpc: Introduce msgsnd/doorbell barrier primitives
2017-04-13 23:34:33 +10:00
dma-iommu.c
powerpc/dma: use the dma_direct mapping routines
2019-02-18 22:41:04 +11:00
dma-mask.c
dma-mapping, powerpc: simplify the arch dma_set_mask override
2019-02-18 22:41:03 +11:00
dma-swiotlb.c
powerpc/dma: use the generic direct mapping bypass
2019-02-18 22:41:04 +11:00
dt_cpu_ftrs.c
memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc*
2018-10-31 08:54:15 -07:00
eeh_cache.c
powerpc/eeh_cache: Bump log level of eeh_addr_cache_print()
2019-02-22 00:10:14 +11:00
eeh_dev.c
powerpc/eeh: Cleanup list_head field names
2018-10-13 22:21:25 +11:00
eeh_driver.c
powerpc/eeh: Improve recovery of passed-through devices
2019-02-05 11:55:44 +11:00
eeh_event.c
powerpc/eeh: Add eeh_force_recover to debugfs
2019-02-22 00:10:15 +11:00
eeh_pe.c
powerpc/eeh: Add include_passed to eeh_pe_state_clear()
2019-02-05 11:55:43 +11:00
eeh_sysfs.c
powerpc/eeh: Add include_passed to eeh_pe_state_clear()
2019-02-05 11:55:43 +11:00
eeh.c
powerpc/eeh: Add eeh_force_recover to debugfs
2019-02-22 00:10:15 +11:00
entry_32.S
powerpc: change CONFIG_6xx to CONFIG_PPC_BOOK3S_32
2018-11-26 22:33:37 +11:00
entry_64.S
powerpc/64s: Clear on-stack exception marker upon exception return
2019-01-31 16:40:25 +11:00
epapr_hcalls.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
epapr_paravirt.c
…
exceptions-64e.S
powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)
2018-12-20 22:59:03 +11:00
exceptions-64s.S
powerpc updates for 4.21
2018-12-27 10:43:24 -08:00
fadump.c
powerpc/fadump: Do not allow hot-remove memory from fadump reserved area.
2018-12-21 11:32:49 +11:00
firmware.c
…
fpu.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
fsl_booke_entry_mapping.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
head_8xx.S
powerpc/8xx: fix setting of pagetable for Abatron BDI debug tool.
2019-01-11 23:45:00 +11:00
head_32.S
powerpc/mm: add exec protection on powerpc 603
2018-12-19 18:56:32 +11:00
head_40x.S
powerpc/405: move PPC405_ERR77 in asm-405.h
2018-07-30 22:48:13 +10:00
head_44x.S
powerpc/44x: use patch_sites for TLB handlers patching
2018-12-19 18:56:32 +11:00
head_64.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
head_booke.h
powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'
2018-12-30 14:00:47 +11:00
head_fsl_booke.S
powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)
2018-12-20 22:59:03 +11:00
hw_breakpoint.c
perf/arch/powerpc: Implement hw_breakpoint_arch_parse()
2018-06-26 09:07:55 +02:00
idle_6xx.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
idle_book3e.S
powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely
2018-07-24 22:03:14 +10:00
idle_book3s.S
Merge branch 'fixes' into next
2018-08-13 15:59:06 +10:00
idle_e500.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
idle_power4.S
powerpc/64s: Fix PACA_IRQ_HARD_DIS accounting in idle_power4()
2018-08-14 15:36:02 +10:00
idle.c
…
ima_kexec.c
powerpc: ima: send the kexec buffer to the next kernel
2016-12-20 09:48:44 -08:00
io-workarounds.c
powerpc: handover page flags with a pgprot_t parameter
2018-10-14 18:04:09 +11:00
io.c
…
iomap.c
powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo}
2018-04-05 14:59:26 +10:00
iommu.c
IOMMU Updates for Linux v4.21
2019-01-01 15:55:29 -08:00
irq.c
powerpc/irq: drop arch_early_irq_init()
2019-01-14 20:39:27 +11:00
isa-bridge.c
powerpc: Use device_type helpers to access the node type
2018-11-26 22:33:37 +11:00
jump_label.c
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00
kexec_elf_64.c
kernel/kexec_file.c: allow archs to set purgatory load address
2018-04-13 17:10:28 -07:00
kgdb.c
kgdb/treewide: constify struct kgdb_arch arch_kgdb_ops
2018-12-30 08:33:06 +00:00
kprobes-ftrace.c
bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe
2018-06-21 12:33:19 +02:00
kprobes.c
bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe
2018-06-21 12:33:19 +02:00
kvm_emul.S
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h
2018-07-30 22:48:16 +10:00
kvm.c
powerpc/kvm: Prefer fault_in_pages_readable function
2018-05-17 14:12:40 +10:00
l2cr_6xx.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
legacy_serial.c
powerpc: Use of_node_name_eq for node name comparisons
2018-12-22 21:29:50 +11:00
machine_kexec_32.c
…
machine_kexec_64.c
powerpc/64/kexec: fix race in kexec when XIVE is shutdown
2018-05-10 23:25:08 +10:00
machine_kexec_file_64.c
powerpc, kexec_file: factor out memblock-based arch_kexec_walk_mem()
2018-12-06 14:38:50 +00:00
machine_kexec.c
powerpc: remove kdump.h from page.h
2018-07-30 22:47:53 +10:00
Makefile
powerpc/dma: use the generic direct mapping bypass
2019-02-18 22:41:04 +11:00
mce_power.c
powerpc/64s/hash: Do not use PPC_INVALIDATE_ERAT on CPUs before POWER9
2018-10-04 23:16:53 +10:00
mce.c
powerpc/64s: Better printing of machine check info for guest MCEs
2019-02-21 23:16:45 +11:00
misc_32.S
powerpc: change CONFIG_6xx to CONFIG_PPC_BOOK3S_32
2018-11-26 22:33:37 +11:00
misc_64.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
misc.S
powerpc/misc: merge reloc_offset() and add_reloc_offset()
2018-06-04 00:39:17 +10:00
module_32.c
powerpc/sparse: Fix plain integer as NULL pointer warning
2018-05-25 12:04:38 +10:00
module_64.c
powerpc/64/module: REL32 relocation range check
2018-10-20 13:26:47 +11:00
module.c
powerpc64/module elfv1: Set opd addresses after module relocation
2018-10-20 13:26:47 +11:00
module.lds
powerpc/modules: Fix alignment of .toc section in kernel modules
2017-12-11 13:03:35 +11:00
msi.c
powerpc/msi: Fix NULL pointer access in teardown code
2018-11-29 23:49:11 +11:00
nvram_64.c
pstore improvements and refactorings
2018-12-27 11:15:21 -08:00
of_platform.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
optprobes_head.S
powerpc/64: Rename soft_enabled to irq_soft_mask
2018-01-19 22:37:01 +11:00
optprobes.c
powerpc/kprobes: Do not disable interrupts for optprobes and kprobes_on_ftrace
2017-11-12 23:51:41 +11:00
paca.c
memblock: stop using implicit alignment to SMP_CACHE_BYTES
2018-10-31 08:54:16 -07:00
pci_32.c
memblock: stop using implicit alignment to SMP_CACHE_BYTES
2018-10-31 08:54:16 -07:00
pci_64.c
powerpc: handover page flags with a pgprot_t parameter
2018-10-14 18:04:09 +11:00
pci_dn.c
powerpc/pci: Separate SR-IOV Calls
2017-12-11 13:03:35 +11:00
pci_of_scan.c
powerpc: Use device_type helpers to access the node type
2018-11-26 22:33:37 +11:00
pci-common.c
powerpc/pci: Add pci_find_controller_for_domain()
2019-02-22 00:10:14 +11:00
pci-hotplug.c
powerpc/pci: Unroll two pass loop when scanning bridges
2017-12-18 23:05:52 -06:00
pmc.c
powerpc: change CONFIG_6xx to CONFIG_PPC_BOOK3S_32
2018-11-26 22:33:37 +11:00
ppc32.h
…
ppc_save_regs.S
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h
2018-07-30 22:48:16 +10:00
proc_powerpc.c
powerpc: Use octal numbers for file permissions
2018-01-22 05:48:33 +11:00
process.c
powerpc: Fix 32-bit KVM-PR lockup and host crash with MacOS guest
2019-02-22 00:10:15 +11:00
prom_init_check.sh
powerpc: Check prom_init for disallowed sections
2018-10-19 00:56:17 +11:00
prom_init.c
powerpc/prom_init: Generate "phandle" instead of "linux, phandle"
2018-10-19 00:56:17 +11:00
prom_parse.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
prom.c
powerpc/prom: move the device tree if not in declared memory.
2018-12-20 22:21:20 +11:00
ptrace32.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ptrace.c
powerpc/ptrace: Simplify vr_get/set() to avoid GCC warning
2019-02-22 00:10:14 +11:00
reloc_32.S
…
reloc_64.S
powerpc/asm: Convert .llong directives to .8byte
2017-08-31 14:26:47 +10:00
rtas_flash.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
rtas_pci.c
powerpc/kernel: Change retrieval of pci_dn
2017-08-31 14:26:40 +10:00
rtas-proc.c
powerpc updates for 4.18
2018-06-07 10:23:33 -07:00
rtas-rtc.c
powerpc: use time64_t in read_persistent_clock
2018-06-03 20:43:33 +10:00
rtas.c
powerpc/rtas: Fix a potential race between CPU-Offline & Migration
2018-10-13 22:21:25 +11:00
rtasd.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
security.c
powerpc/fsl: Update Spectre v2 reporting
2018-12-20 22:59:03 +11:00
setup_32.c
powerpc/dma: remove the unused ISA_DMA_THRESHOLD export
2018-12-20 22:21:20 +11:00
setup_64.c
powerpc/64: Fix kernel stack 16-byte alignment
2018-11-15 14:48:43 +11:00
setup-common.c
powerpc/dma: use the generic direct mapping bypass
2019-02-18 22:41:04 +11:00
setup.h
powerpc/tau: Synchronize function prototypes and body
2018-05-25 12:04:43 +10:00
signal_32.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
signal_64.c
powerpc/tm: Limit TM code inside PPC_TRANSACTIONAL_MEM
2019-01-11 23:45:00 +11:00
signal.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
signal.h
powerpc/syscalls: signal_{32, 64} - switch to SYSCALL_DEFINE
2018-05-10 23:25:13 +10:00
smp-tbsync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smp.c
powerpc: Fix stack protector crashes on CPU hotplug
2018-10-21 19:32:00 +11:00
stacktrace.c
powerpc/livepatch: return -ERRNO values in save_stack_trace_tsk_reliable()
2019-01-31 16:43:38 +11:00
suspend.c
…
swsusp_32.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
swsusp_64.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/nmi.h>
2017-03-02 08:42:30 +01:00
swsusp_asm64.S
powerpc/64s/hash: Simplify slb_flush_and_rebolt()
2018-10-14 18:04:09 +11:00
swsusp_booke.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swsusp.c
powerpc/swsusp: Include suspend.h to silence sparse warnings
2017-03-20 19:02:49 +11:00
sys_ppc32.c
powerpc/syscalls: kill ppc32_select()
2018-05-10 23:25:15 +10:00
syscalls.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
sysfs.c
powerpc: change CONFIG_6xx to CONFIG_PPC_BOOK3S_32
2018-11-26 22:33:37 +11:00
systbl_chk.sh
powerpc: Make it clearer that systbl check errors are errors
2018-05-10 23:25:16 +10:00
systbl.S
powerpc: generate uapi header and system call table files
2018-12-21 14:46:50 +11:00
tau_6xx.c
powerpc/tau: Make some function static
2018-05-25 12:04:44 +10:00
time.c
powerpc/kernel/time: Remove duplicate header
2019-01-30 23:42:31 +11:00
tm.S
Merge branch 'fixes' into next
2018-10-09 16:51:05 +11:00
traps.c
powerpc/traps: Fix the message printed when stack overflows
2019-01-30 23:31:44 +11:00
udbg_16550.c
…
udbg.c
powerpc: use a CONSOLE_LOGLEVEL_DEBUG macro
2019-01-14 20:39:27 +11:00
uprobes.c
powerpc/uprobes: Implement arch_uretprobe_is_alive()
2017-08-24 16:19:21 +10:00
vdso.c
powerpc: split compat syscall table out from native table
2018-12-21 14:46:50 +11:00
vecemu.c
powerpc: Add a missing include header
2018-05-25 12:04:46 +10:00
vector.S
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h
2018-07-30 22:48:16 +10:00
vmlinux.lds.S
powerpc/32: Include .branch_lt in data section
2019-02-05 15:47:16 +11:00
watchdog.c
powerpc: NMI IPI make NMI IPIs fully sychronous
2018-07-24 22:03:14 +10:00