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b2b46304e9360f3dda49c9d8ba4a1478b9eecf1d
android_kernel_xiaomi_sm8450/arch/powerpc/kernel
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Nicholas Piggin b2b46304e9 powerpc: re-initialise lazy FPU/VEC counters on every fault 
When a FP/VEC/VSX unavailable fault loads registers and enables the
facility in the MSR, re-set the lazy restore counters to 1 rather
than incrementing them so every fault gets the same number of
restores before the next fault.

This probably shouldn't be a practical change because if a lazy counter
was non-zero then it should have been restored and would not cause a
fault when userspace tries to access it. However the code and comment
implies otherwise so that's misleading and unnecessary.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200623234139.2262227-3-npiggin@gmail.com
2020-07-16 13:00:24 +10:00
..
ptrace
powerpc/watchpoint: Use builtin ALIGN*() macros
2020-05-19 00:11:05 +10:00
syscalls
vfs: add faccessat2 syscall
2020-05-14 16:44:25 +02:00
trace
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
vdso32
powerpc/vdso32: Fallback on getres syscall when clock is unknown
2020-05-11 19:24:29 +10:00
vdso64
powerpc/vdso64: Switch from __get_datapage() to get_datapage inline macro
2020-07-15 12:04:40 +10:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
align.c
powerpc: Define and use get_user_instr() et. al.
2020-05-19 00:10:37 +10:00
asm-offsets.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -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
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
cacheinfo.c
powerpc/cacheinfo: Add per cpu per index shared_cpu_list
2020-07-15 11:07:20 +10:00
cacheinfo.h
powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild
2019-06-15 16:52:06 +10:00
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/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_fsl_booke.S
powerpc/booke: Spelling s/date/data/
2019-11-17 01:56:31 -06:00
cpu_setup_pa6t.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
cpu_setup_power.S
powerpc: Add POWER10 architected mode
2020-06-02 20:59:20 +10:00
cpu_setup_ppc970.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cputable.c
powerpc: Add POWER10 architected mode
2020-06-02 20:59:20 +10:00
crash_dump.c
powerpc: Add prefixed instructions to instruction data type
2020-05-19 00:10:39 +10:00
dawr.c
powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable
2020-05-19 00:11:05 +10:00
dbell.c
KVM: PPC: Book3S HV: use smp_mb() when setting/clearing host_ipi flag
2019-09-24 12:46:26 +10:00
dma-iommu.c
Merge tag 'powerpc-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2019-09-20 11:48:06 -07:00
dma-mask.c
dma-mapping, powerpc: simplify the arch dma_set_mask override
2019-02-18 22:41:03 +11:00
dma-swiotlb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dt_cpu_ftrs.c
powerpc/mm: Enable radix GTSE only if supported.
2020-07-16 13:00:21 +10:00
early_32.c
powerpc/fsl_booke/32: implement KASLR infrastructure
2019-11-13 19:27:40 +11:00
eeh_cache.c
powerpc/eeh_cache: Don't use pci_dn when inserting new ranges
2020-01-23 21:31:18 +11:00
eeh_dev.c
powerpc/eeh: Add bdfn field to eeh_dev
2019-08-22 23:12:46 +10:00
eeh_driver.c
powerpc/eeh: Fix deadlock handling dead PHB
2020-02-17 12:47:05 +11:00
eeh_event.c
powerpc/eeh: Fix build with STACKTRACE=n
2019-09-14 00:01:14 +10:00
eeh_pe.c
powerpc/eeh: Clean up EEH PEs after recovery finishes
2019-09-05 14:22:37 +10:00
eeh_sysfs.c
powerpc/eeh_sysfs: Make clearing EEH_DEV_SYSFS saner
2020-01-23 21:31:19 +11:00
eeh.c
powerpc/eeh: Release EEH device state synchronously
2020-05-18 21:58:44 +10:00
entry_32.S
powerpc/entry32: Blacklist exception exit points for kprobe.
2020-06-02 20:59:13 +10:00
entry_64.S
powerpc/64: indirect function call use bctrl rather than blrl in ret_from_kernel_thread
2020-06-22 10:37:55 +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: Use a datatype for instructions
2020-05-19 00:10:37 +10:00
exceptions-64e.S
powerpc/64s: Implement interrupt exit logic in C
2020-04-01 13:42:14 +11:00
exceptions-64s.S
powerpc/64s: Fix KVM interrupt using wrong save area
2020-06-16 12:52:43 +10:00
fadump.c
powerpc/fadump: Account for memory_limit while reserving memory
2020-06-02 20:59:05 +10:00
firmware.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
fpu.S
powerpc: re-initialise lazy FPU/VEC counters on every fault
2020-07-16 13:00:24 +10:00
fsl_booke_entry_mapping.S
powerpc/fsl_booke/32: implement KASLR infrastructure
2019-11-13 19:27:40 +11:00
head_8xx.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
head_32.h
Merge branch 'fixes' into next
2020-03-10 15:16:42 +11:00
head_32.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
head_40x.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
head_44x.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
head_64.S
powerpc/64: Don't initialise init_task->thread.regs
2020-05-15 11:58:54 +10:00
head_booke.h
powerpc: Replace _ALIGN_UP() by ALIGN()
2020-05-11 23:15:15 +10:00
head_fsl_booke.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
hw_breakpoint.c
powerpc/watchpoint: Don't allow concurrent perf and ptrace events
2020-05-19 00:14:45 +10:00
idle_6xx.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
idle_book3e.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
idle_book3s.S
powerpc/64s: Reimplement power4_idle code in C
2020-01-16 14:59:37 +10:00
idle_e500.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
idle.c
powerpc/64s: Reimplement power4_idle code in C
2020-01-16 14:59:37 +10:00
ima_arch.c
powerpc/ima: Fix secure boot rules in ima arch policy
2020-05-07 17:25:54 +10:00
io-workarounds.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
io.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
iomap.c
powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo}
2018-04-05 14:59:26 +10:00
iommu.c
Merge branch 'topic/ppc-kvm' into next
2019-08-30 09:52:57 +10:00
irq.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
isa-bridge.c
powerpc: remove __ioremap_at and __iounmap_at
2020-06-02 10:59:10 -07:00
jump_label.c
powerpc: Use a datatype for instructions
2020-05-19 00:10:37 +10:00
kgdb.c
maccess: make get_kernel_nofault() check for minimal type compatibility
2020-06-18 12:10:37 -07:00
kprobes-ftrace.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
kprobes.c
maccess: rename probe_kernel_address to get_kernel_nofault
2020-06-18 11:14:40 -07:00
kvm_emul.S
powerpc/kvm: Add ifdefs around template code
2019-09-14 00:04:40 +10:00
kvm.c
powerpc/kvm: Explicitly mark kvm guest code as __init
2019-09-14 00:04:40 +10:00
l2cr_6xx.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
legacy_serial.c
tty/serial: Migrate 8250_fsl to use has_sysrq
2019-12-18 15:04:42 +01:00
Makefile
powerpc/64s: Disable sanitisers for C syscall/interrupt entry/exit code
2020-05-29 21:12:09 +10:00
mce_power.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
mce.c
powerpc/64s: machine check do not trace real-mode handler
2020-05-19 00:10:34 +10:00
misc_32.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
misc_64.S
Merge branch 'topic/kaslr-book3e32' into next
2019-11-14 19:23:33 +11:00
misc.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
module_32.c
powerpc: module_[32|64].c: replace swap function with built-in one
2020-05-11 23:15:14 +10:00
module_64.c
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
module.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
module.lds
powerpc/modules: Fix alignment of .toc section in kernel modules
2017-12-11 13:03:35 +11:00
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
Merge tag 'powerpc-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2020-06-05 12:39:30 -07:00
of_platform.c
powerpc/eeh: Make early EEH init pseries specific
2020-03-25 12:09:39 +11:00
optprobes_head.S
powerpc: Add prefixed instructions to instruction data type
2020-05-19 00:10:39 +10:00
optprobes.c
powerpc: Add ppc_inst_as_u64()
2020-05-26 23:36:57 +10:00
paca.c
powerpc/pseries/svm: Drop unused align argument in alloc_shared_lppaca() function
2020-06-22 10:37:59 +10:00
pci_32.c
powerpc/64: Adjust order in pcibios_init()
2019-08-22 23:11:48 +10:00
pci_64.c
Merge tag 'powerpc-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2020-06-05 12:39:30 -07:00
pci_dn.c
powerpc/pcidn: Warn when sriov pci_dn management is used incorrectly
2020-01-23 21:31:19 +11:00
pci_of_scan.c
powerpc/pci: Remove pcibios_setup_bus_devices()
2020-01-06 16:25:29 +11:00
pci-common.c
Merge tag 'powerpc-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2020-04-05 11:12:59 -07:00
pci-hotplug.c
powerpc/eeh: Release EEH device state synchronously
2020-05-18 21:58:44 +10:00
pmc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ppc32.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ppc_save_regs.S
powerpc: Improve ppc_save_regs()
2020-04-04 21:40:57 +11:00
proc_powerpc.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
process.c
powerpc/64s: Fix restore_math unnecessarily changing MSR
2020-07-16 13:00:24 +10:00
prom_init_check.sh
powerpc/prom_init: Undo relocation before entering secure mode
2019-10-29 15:12:17 +11:00
prom_init.c
powerpc/mm: Enable radix GTSE only if supported.
2020-07-16 13:00:21 +10:00
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
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
reloc_32.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
reloc_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtas_flash.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
rtas_pci.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
rtas-proc.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
rtas-rtc.c
powerpc: use time64_t in read_persistent_clock
2018-06-03 20:43:33 +10:00
rtas.c
powerpc/rtas: Implement reentrant rtas call
2020-06-02 20:59:08 +10:00
rtasd.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
secure_boot.c
powerpc: Detect the trusted boot state of the system
2019-11-12 12:25:49 +11:00
security.c
powerpc: Use a macro for creating instructions from u32s
2020-05-19 00:10:36 +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: expose secure variables to userspace via sysfs
2019-11-13 00:33:22 +11:00
setup_32.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
setup_64.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
setup-common.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
setup.h
powerpc/64: Prevent stack protection in early boot
2020-03-25 12:09:38 +11:00
signal_32.c
powerpc/signal_32: Simplify loop in PPC64 save_general_regs()
2020-07-15 12:04:40 +10:00
signal_64.c
powerpc/signal64: Don't opencode page prefaulting
2020-07-15 12:04:40 +10:00
signal.c
powerpc/watchpoint: Convert thread_struct->hw_brk to an array
2020-05-19 00:11:05 +10:00
signal.h
powerpc/64/sycall: Implement syscall entry/exit logic in C
2020-04-01 13:42:13 +11:00
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
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
stacktrace.c
kernel: rename show_stack_loglvl() => show_stack()
2020-06-09 09:39:13 -07:00
suspend.c
PM: hibernate: powerpc: Expose pfn_is_nosave() prototype
2019-06-14 10:48:56 +02:00
swsusp_32.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
swsusp_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
2019-06-19 17:11:22 +02:00
swsusp_asm64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
2019-06-19 17:11:22 +02:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sys_ppc32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
syscall_64.c
powerpc/64s: Fix restore_math unnecessarily changing MSR
2020-07-16 13:00:24 +10:00
syscalls.c
y2038: syscalls: change remaining timeval to __kernel_old_timeval
2019-11-15 14:38:29 +01:00
sysfs.c
powerpc/sysfs: Show idle_purr and idle_spurr for every CPU
2020-04-30 12:35:26 +10:00
systbl_chk.sh
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
systbl.S
powerpc/64/sycall: Implement syscall entry/exit logic in C
2020-04-01 13:42:13 +11:00
tau_6xx.c
powerpc/tau: Make some function static
2018-05-25 12:04:44 +10:00
time.c
Revert "powerpc/64: irq_work avoid interrupt when called with hardware irqs enabled"
2020-04-03 16:55:34 +11:00
tm.S
powerpc/tm: update comment about interrupt re-entrancy
2019-07-02 21:39:49 +10:00
traps.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
ucall.S
powerpc/kernel: Add ucall_norets() ultravisor call handler
2019-08-30 09:40:15 +10:00
udbg_16550.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
udbg.c
powerpc/udbg: Make it safe to call udbg_printf() always
2019-10-11 19:33:25 +11:00
uprobes.c
powerpc: Add ppc_inst_next()
2020-05-26 23:36:51 +10:00
vdso.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
vecemu.c
powerpc: Define and use get_user_instr() et. al.
2020-05-19 00:10:37 +10:00
vector.S
powerpc: re-initialise lazy FPU/VEC counters on every fault
2020-07-16 13:00:24 +10:00
vmlinux.lds.S
Merge tag 'powerpc-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2020-06-05 12:39:30 -07:00
watchdog.c
powerpc/watchdog: Use hrtimers for per-CPU heartbeat
2019-04-30 11:31:02 +10:00