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Jordan Niethe b3d5d09833 powerpc/64s: Fix pte update for kernel memory on radix 
[ Upstream commit b8b2f37cf632434456182e9002d63cbc4cccc50c ]

When adding a PTE a ptesync is needed to order the update of the PTE
with subsequent accesses otherwise a spurious fault may be raised.

radix__set_pte_at() does not do this for performance gains. For
non-kernel memory this is not an issue as any faults of this kind are
corrected by the page fault handler. For kernel memory these faults
are not handled. The current solution is that there is a ptesync in
flush_cache_vmap() which should be called when mapping from the
vmalloc region.

However, map_kernel_page() does not call flush_cache_vmap(). This is
troublesome in particular for code patching with Strict RWX on radix.
In do_patch_instruction() the page frame that contains the instruction
to be patched is mapped and then immediately patched. With no ordering
or synchronization between setting up the PTE and writing to the page
it is possible for faults.

As the code patching is done using __put_user_asm_goto() the resulting
fault is obscured - but using a normal store instead it can be seen:

  BUG: Unable to handle kernel data access on write at 0xc008000008f24a3c
  Faulting instruction address: 0xc00000000008bd74
  Oops: Kernel access of bad area, sig: 11 [#1]
  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV
  Modules linked in: nop_module(PO+) [last unloaded: nop_module]
  CPU: 4 PID: 757 Comm: sh Tainted: P           O      5.10.0-rc5-01361-ge3c1b78c8440-dirty #43
  NIP:  c00000000008bd74 LR: c00000000008bd50 CTR: c000000000025810
  REGS: c000000016f634a0 TRAP: 0300   Tainted: P           O       (5.10.0-rc5-01361-ge3c1b78c8440-dirty)
  MSR:  9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 44002884  XER: 00000000
  CFAR: c00000000007c68c DAR: c008000008f24a3c DSISR: 42000000 IRQMASK: 1

This results in the kind of issue reported here:
  https://lore.kernel.org/linuxppc-dev/15AC5B0E-A221-4B8C-9039-FA96B8EF7C88@lca.pw/

Chris Riedl suggested a reliable way to reproduce the issue:
  $ mount -t debugfs none /sys/kernel/debug
  $ (while true; do echo function > /sys/kernel/debug/tracing/current_tracer ; echo nop > /sys/kernel/debug/tracing/current_tracer ; done) &

Turning ftrace on and off does a large amount of code patching which
in usually less then 5min will crash giving a trace like:

   ftrace-powerpc: (____ptrval____): replaced (4b473b11) != old (60000000)
   ------------[ ftrace bug ]------------
   ftrace failed to modify
   [<c000000000bf8e5c>] napi_busy_loop+0xc/0x390
    actual:   11:3b:47:4b
   Setting ftrace call site to call ftrace function
   ftrace record flags: 80000001
    (1)
    expected tramp: c00000000006c96c
   ------------[ cut here ]------------
   WARNING: CPU: 4 PID: 809 at kernel/trace/ftrace.c:2065 ftrace_bug+0x28c/0x2e8
   Modules linked in: nop_module(PO-) [last unloaded: nop_module]
   CPU: 4 PID: 809 Comm: sh Tainted: P           O      5.10.0-rc5-01360-gf878ccaf250a #1
   NIP:  c00000000024f334 LR: c00000000024f330 CTR: c0000000001a5af0
   REGS: c000000004c8b760 TRAP: 0700   Tainted: P           O       (5.10.0-rc5-01360-gf878ccaf250a)
   MSR:  900000000282b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 28008848  XER: 20040000
   CFAR: c0000000001a9c98 IRQMASK: 0
   GPR00: c00000000024f330 c000000004c8b9f0 c000000002770600 0000000000000022
   GPR04: 00000000ffff7fff c000000004c8b6d0 0000000000000027 c0000007fe9bcdd8
   GPR08: 0000000000000023 ffffffffffffffd8 0000000000000027 c000000002613118
   GPR12: 0000000000008000 c0000007fffdca00 0000000000000000 0000000000000000
   GPR16: 0000000023ec37c5 0000000000000000 0000000000000000 0000000000000008
   GPR20: c000000004c8bc90 c0000000027a2d20 c000000004c8bcd0 c000000002612fe8
   GPR24: 0000000000000038 0000000000000030 0000000000000028 0000000000000020
   GPR28: c000000000ff1b68 c000000000bf8e5c c00000000312f700 c000000000fbb9b0
   NIP ftrace_bug+0x28c/0x2e8
   LR  ftrace_bug+0x288/0x2e8
   Call Trace:
     ftrace_bug+0x288/0x2e8 (unreliable)
     ftrace_modify_all_code+0x168/0x210
     arch_ftrace_update_code+0x18/0x30
     ftrace_run_update_code+0x44/0xc0
     ftrace_startup+0xf8/0x1c0
     register_ftrace_function+0x4c/0xc0
     function_trace_init+0x80/0xb0
     tracing_set_tracer+0x2a4/0x4f0
     tracing_set_trace_write+0xd4/0x130
     vfs_write+0xf0/0x330
     ksys_write+0x84/0x140
     system_call_exception+0x14c/0x230
     system_call_common+0xf0/0x27c

To fix this when updating kernel memory PTEs using ptesync.

Fixes: f1cb8f9beb ("powerpc/64s/radix: avoid ptesync after set_pte and ptep_set_access_flags")
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Tidy up change log slightly]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210208032957.1232102-1-jniethe5@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-22 10:59:35 +02:00
..
book3s powerpc/64s: Fix pte update for kernel memory on radix 2021-05-22 10:59:35 +02:00
nohash powerpc: Fix incorrect stw{, ux, u, x} instructions in __set_pte_at 2020-12-30 11:26:12 +01:00
8xx_immap.h
accounting.h sched/cputime, powerpc: Prepare accounting structure for cputime flush on tick 2017-01-14 09:54:12 +01:00
agp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
archrandom.h powerpc/archrandom: fix arch_get_random_seed_int() 2020-01-27 14:49:52 +01:00
asm-405.h powerpc/405: move PPC405_ERR77 in asm-405.h 2018-07-30 22:48:13 +10:00
asm-compat.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
asm-const.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
asm-offsets.h
asm-prototypes.h KVM: PPC: Book3S HV: Flush link stack on guest exit to host kernel 2019-12-01 09:17:46 +01:00
async_tx.h
atomic.h powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
backlight.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
barrier.h powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E 2018-08-08 00:32:24 +10:00
bitops.h powerpc/bitops: Fix possible undefined behaviour with fls() and fls64() 2021-01-06 14:44:59 +01:00
bootx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
btext.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bug.h powerpc/pseries, ps3: panic flush kernel messages before halting system 2018-01-22 11:44:24 +11:00
bugs.h
cache.h powerpc/lib: Adjust .balign inside string functions for PPC32 2018-06-04 00:39:19 +10:00
cacheflush.h powerpc/cacheflush: fix variable set but not used 2019-07-31 07:27:02 +02:00
cell-pmu.h
cell-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum.h powerpc: Implement csum_ipv6_magic in assembly 2018-06-04 00:39:19 +10:00
cmpxchg.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
code-patching-asm.h powerpc/asm: Add a patch_site macro & helpers for patching instructions 2018-08-08 00:32:25 +10:00
code-patching.h powerpc/64s: Fix instruction encoding for lis in ppc_function_entry() 2021-03-17 16:43:51 +01:00
compat.h y2038: powerpc: Extend sysvipc data structures 2018-04-20 16:20:13 +02:00
context_tracking.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
copro.h mm: convert return type of handle_mm_fault() caller to vm_fault_t 2018-08-17 16:20:28 -07:00
cpm.h powerpc/sysdev: change CPM GPIO to platform_device 2018-01-20 23:29:02 -06:00
cpm1.h powerpc/sysdev: change CPM GPIO to platform_device 2018-01-20 23:29:02 -06:00
cpm2.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpu_has_feature.h powerpc: Force inlining of cpu_has_feature() to avoid build failure 2021-03-24 11:07:34 +01:00
cpufeature.h powerpc: Add module autoloading based on CPU features 2016-07-21 20:33:57 +10:00
cpuidle.h powernv/cpuidle: Use parsed device tree values for cpuidle_init 2018-07-31 19:56:44 +10:00
cputable.h powerpc/feature: Fix CPU_FTRS_ALWAYS by removing CPU_FTRS_GENERIC_32 2020-12-30 11:25:55 +01:00
cputhreads.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cputime.h powerpc: remove unneeded inclusions of cpu_has_feature.h 2018-07-30 22:47:54 +10:00
current.h
dbdma.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dbell.h powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
dcr-generic.h
dcr-mmio.h
dcr-native.h powerpc/4xx: Fix build errors from mfdcr() 2021-03-30 14:36:57 +02:00
dcr-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dcr.h
debug.h powerpc: declare set_breakpoint() static 2018-07-30 22:48:18 +10:00
debugfs.h powerpc: Create asm/debugfs.h and move powerpc_debugfs_root there 2017-04-11 07:46:03 +10:00
delay.h powerpc: use spin loop primitives in some functions 2017-07-02 20:40:24 +10:00
device.h treewide: Move dma_ops from struct dev_archdata into struct device 2017-01-24 12:23:35 -05:00
disassemble.h KVM: PPC: Book3S: Add MMIO emulation for FP and VSX instructions 2017-04-20 11:36:41 +10:00
dma-direct.h dma/direct: Handle the memory encryption bit in common code 2018-03-20 10:01:59 +01:00
dma-mapping.h powerpc: rename dma_direct_ to dma_nommu_ 2018-01-10 16:41:14 +01:00
dma.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
drmem.h powerpc/drmem: Make lmb_size 64 bit 2020-11-05 11:08:51 +01:00
dt_cpu_ftrs.h powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
edac.h
eeh.h powerpc/eeh: Avoid misleading message "EEH: no capable adapters found" 2018-07-02 23:54:26 +10:00
eeh_event.h powerpc/eeh: Manage EEH_PE_RECOVERING inside eeh_handle_normal_event() 2018-03-27 23:44:58 +11:00
ehv_pic.h
elf.h powerpc: move ELF_ET_DYN_BASE to 4GB / 4MB 2017-07-10 16:32:36 -07:00
emergency-restart.h
emulated_ops.h powerpc/64s: Add workaround for P9 vector CI load issue 2017-09-27 08:23:22 +10:00
epapr_hcalls.h powerpc/epapr: Move register keyword at the beginning of declaration 2018-03-13 15:50:32 +11:00
exception-64e.h powerpc/64: Add macros for annotating the destination of rfid/hrfid 2018-01-10 03:07:30 +11:00
exception-64s.h powerpc/64s: flush L1D on kernel entry 2020-11-22 10:02:25 +01:00
exec.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
extable.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fadump.h powerpc/fadump: Do not allow hot-remove memory from fadump reserved area. 2019-02-12 19:47:16 +01:00
fb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
feature-fixups.h powerpc/64s: flush L1D after user accesses 2020-11-22 10:02:26 +01:00
firmware.h powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
fixmap.h powerpc/cpm1: fix compilation error with CONFIG_PPC_EARLY_DEBUG_CPM 2018-08-10 22:12:33 +10:00
floppy.h floppy: consolidate the dummy fd_cacheflush definition 2017-10-19 16:37:08 +02:00
fs_pd.h powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
fsl_85xx_cache_sram.h
fsl_gtm.h
fsl_hcalls.h scripts/spelling.txt: add "partiton" pattern and fix typo instances 2017-02-27 18:43:46 -08:00
fsl_lbc.h
fsl_pamu_stash.h
fsl_pm.h powerpc/rcpm: add RCPM driver 2016-03-04 23:50:27 -06:00
ftrace.h Merge branch 'fixes' into next 2018-06-03 20:32:02 +10:00
futex.h powerpc: Add a framework for user access tracking 2020-11-22 10:02:25 +01:00
grackle.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hardirq.h powerpc updates for 4.18 2018-06-07 10:23:33 -07:00
head-64.h powerpc/64s: Drop unused loc parameter to MASKABLE_EXCEPTION macros 2018-08-07 21:49:38 +10:00
heathrow.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
highmem.h powerpc: remove unnecessary inclusion of asm/tlbflush.h 2018-07-30 22:48:20 +10:00
hmi.h KVM: PPC: Book3S HV: Improve handling of debug-trigger HMIs on POWER9 2018-01-18 15:31:25 +11:00
hugetlb.h powerpc/mm: remove huge_pte_offset_and_shift() prototype 2018-08-10 22:12:35 +10:00
hvcall.h powerpc/pseries: Query hypervisor for count cache flush settings 2018-08-08 00:32:26 +10:00
hvconsole.h
hvcserver.h
hvsi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hw_breakpoint.h powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
hw_irq.h powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely 2018-07-24 22:03:14 +10:00
hydra.h powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
i8259.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ibmebus.h
icswx.h crypto/nx: Add P9 NX specific error codes for 842 engine 2017-09-01 16:42:50 +10:00
ide.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ima.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
imc-pmu.h powerpc/perf: Unregister thread-imc if core-imc not supported 2018-06-03 20:43:37 +10:00
immap_cpm2.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io-defs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io-workarounds.h
io.h powerpc/io: Fix the IO workarounds code to work with Radix 2018-12-01 09:37:32 +01:00
io_event_irq.h
iommu.h KVM: PPC: Avoid marking DMA-mapped pages dirty in real mode 2018-09-12 08:49:54 +10:00
ipic.h
irq.h powerpc: Add missing prototype for init_IRQ() 2018-03-13 15:50:38 +11:00
irq_work.h powerpc: Add missing prototype for arch_irq_work_raise() 2018-03-13 15:50:37 +11:00
irqflags.h powerpc/64: Rename soft_enabled to irq_soft_mask 2018-01-19 22:37:01 +11:00
isa-bridge.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
jump_label.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
Kbuild arch: Remove clkdev.h asm-generic from Kbuild 2018-01-03 09:02:11 -08:00
kdebug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kdump.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kexec.h kexec_file,x86,powerpc: factor out kexec_file_ops functions 2018-04-13 17:10:27 -07:00
keylargo.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kgdb.h powerpc/kgdb: add kgdb_arch_set/remove_breakpoint() 2020-01-27 14:50:00 +01:00
kmap_types.h
kprobes.h powerpc/kprobes: Don't call the ->break_handler() in powerpc kprobes code 2018-06-21 12:33:15 +02:00
kup.h powerpc/64s: flush L1D after user accesses 2020-11-22 10:02:26 +01:00
kvm_asm.h KVM: PPC: Book3S HV: Treat TM-related invalid form instructions on P9 like the valid ones 2020-10-01 13:14:38 +02:00
kvm_book3s.h KVM: PPC: Use ccr field in pt_regs struct embedded in vcpu struct 2019-09-16 08:22:18 +02:00
kvm_book3s_32.h
kvm_book3s_64.h KVM: PPC: Use ccr field in pt_regs struct embedded in vcpu struct 2019-09-16 08:22:18 +02:00
kvm_book3s_asm.h KVM: PPC: Book3S HV: Work around transactional memory bugs in POWER9 2018-03-24 00:39:13 +11:00
kvm_booke.h KVM: PPC: Use ccr field in pt_regs struct embedded in vcpu struct 2019-09-16 08:22:18 +02:00
kvm_booke_hv_asm.h powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
kvm_fpu.h
kvm_host.h KVM: Pass MMU notifier range flags to kvm_unmap_hva_range() 2020-08-26 10:31:07 +02:00
kvm_para.h KVM: Introduce paravirtualization hints and KVM_HINTS_DEDICATED 2018-03-06 18:40:44 +01:00
kvm_ppc.h KVM: PPC: Book3S HV: use smp_mb() when setting/clearing host_ipi flag 2020-01-09 10:19:08 +01:00
libata-portmap.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
linkage.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
livepatch.h powerpc/livepatch: Remove klp_write_module_reloc() stub 2016-12-19 11:15:25 +01:00
local.h powerpc/64s: Implement local_t using irq soft masking 2018-01-19 22:37:04 +11:00
lppaca.h powerpc: Fix oops due to bad access of lppaca on bare metal 2018-04-03 21:50:07 +10:00
lv1call.h
machdep.h powerpc/pci: Add ppc_md.discover_phbs() 2021-03-17 16:43:45 +01:00
macio.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mc146818rtc.h
mce.h powerpc/mce: Hookup derror (load/store) UE errors 2017-10-16 23:12:01 +11:00
mediabay.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
membarrier.h membarrier: Provide GLOBAL_EXPEDITED command 2018-02-05 21:34:31 +01:00
mm-arch-hooks.h
mman.h mm: Add address parameter to arch_validate_prot() 2018-03-18 07:38:47 -07:00
mmu-8xx.h Revert "powerpc/8xx: Use L1 entry APG to handle _PAGE_ACCESSED for CONFIG_SWAP" 2018-11-21 09:19:18 +01:00
mmu-40x.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmu-44x.h powerpc/44x: remove page.h from mmu-44x.h 2018-07-30 22:48:20 +10:00
mmu-book3e.h powerpc/mm/book3e/64: Remove unsupported 64Kpage size from 64bit booke 2018-05-15 22:29:10 +10:00
mmu.h powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
mmu_context.h powerpc: select ARCH_WANT_IRQS_OFF_ACTIVATE_MM 2020-11-05 11:08:38 +01:00
mmzone.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
module.h powerpc/kbuild: move -mprofile-kernel check to Kconfig 2018-06-11 09:16:29 +09:00
mpc5xxx.h
mpc6xx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpc52xx.h powerpc/52xx: Add missing functions prototypes 2018-05-25 12:04:42 +10:00
mpc52xx_psc.h
mpc85xx.h
mpc5121.h
mpc8260.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpic.h powerpc/msi: Fix compile error on mpc83xx 2018-11-13 11:08:50 -08:00
mpic_msgr.h powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
mpic_timer.h powerpc/mpic_timer: avoid struct timeval 2018-01-21 15:06:16 +11:00
msi_bitmap.h
nmi.h powerpc/64s: Fix build failures with CONFIG_NMI_IPI=n 2018-06-19 23:03:50 +10:00
nvram.h
ohare.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
opal-api.h crypto/nx: Initialize 842 high and normal RxFIFO control registers 2018-08-08 00:32:34 +10:00
opal.h powerpc/xive: Fix bogus error code returned by OPAL 2019-10-01 08:26:00 +02:00
oprofile_impl.h
paca.h powerpc/pseries: Defer the logging of rtas error to irq work queue. 2018-08-07 21:49:29 +10:00
page.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
page_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
page_64.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
parport.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pasemi_dma.h
pci-bridge.h powerpc/powernv/idoa: Remove unnecessary pcidev from pci_dn 2018-01-27 20:39:01 +11:00
pci.h PCI: remove PCI_DMA_BUS_IS_PHYS 2018-05-07 07:15:41 +02:00
percpu.h powerpc: Fix circular dependency between percpu.h and mmu.h 2020-08-21 11:05:31 +02:00
perf_event.h
perf_event_fsl_emb.h
perf_event_server.h powerpc/perf: Infrastructure to support addition of blacklisted events 2018-03-27 19:25:10 +11:00
pgalloc.h kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK 2017-11-15 18:21:04 -08:00
pgtable-be-types.h powerpc updates for 4.15 2017-11-16 12:47:46 -08:00
pgtable-types.h powerpc updates for 4.15 2017-11-16 12:47:46 -08:00
pgtable.h powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang 2018-06-03 20:40:34 +10:00
pkeys.h powerpc/pkeys: make protection key 0 less special 2018-07-24 21:43:24 +10:00
plpar_wrappers.h powerpc/pseries: put cede MSR[EE] check under IRQ_SOFT_MASK_DEBUG 2018-06-03 20:40:25 +10:00
pmac_feature.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
pmac_low_i2c.h
pmac_pfunc.h powerpc/powermac: Move pmac_pfunc_base_install prototype to header file 2018-05-25 12:04:41 +10:00
pmc.h powerpc/64s: Do not allocate lppaca if we are not virtualized 2018-03-30 23:34:22 +11:00
pmi.h
pnv-ocxl.h ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action 2018-06-03 20:40:32 +10:00
pnv-pci.h Revert "powerpc/powernv: Add support for the cxl kernel api on the real phb" 2018-07-02 23:54:32 +10:00
powernv.h powerpc/powernv: Don't reprogram SLW image on every KVM guest entry/exit 2019-03-23 20:10:07 +01:00
ppc-opcode.h powerpc/bpf: use unsigned division instruction for 64-bit operations 2019-06-25 11:36:00 +08:00
ppc-pci.h powerpc/eeh: Refactor EEH PE reset functions 2016-11-22 11:57:08 +11:00
ppc4xx.h powerpc: Make ppc_md.{halt, restart} __noreturn 2016-07-14 21:12:06 +10:00
ppc4xx_ocm.h
ppc_asm.h powerpc/fsl: Add macro to flush the branch predictor 2019-04-03 06:26:19 +02:00
probes.h
processor.h powerpc/64: Don't initialise init_task->thread.regs 2020-06-25 15:32:56 +02:00
prom.h pseries/drc-info: Search DRC properties for CPU indexes 2018-01-21 16:21:46 +11:00
ps3.h treewide: Consolidate get_dma_ops() implementations 2017-01-24 12:23:35 -05:00
ps3av.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
ps3gpu.h
ps3stor.h
pte-common.h mm: introduce ARCH_HAS_PTE_SPECIAL 2018-06-07 17:34:35 -07:00
pte-walk.h powerpc/mm: Rename find_linux_pte_or_hugepte() 2017-08-17 23:13:46 +10:00
ptrace.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
reg.h powerpc/tau: Use appropriate temperature sample interval 2020-10-29 09:55:18 +01:00
reg_8xx.h powerpc/8xx: Remove CPU6 ERRATA Workaround 2018-01-16 23:47:12 +11:00
reg_a2.h powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
reg_booke.h powerpc/booke64: set RI in default MSR 2019-05-16 19:41:31 +02:00
reg_fsl_emb.h powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00
rheap.h powerpc: Add missing prototype 2018-05-25 12:04:43 +10:00
rio.h
rtas.h powerpc: use time64_t in read_persistent_clock 2018-06-03 20:43:33 +10:00
runlatch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scom.h
seccomp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sections.h powerpc64: Add .opd based function descriptor dereference 2018-01-09 10:45:37 +01:00
security_features.h powerpc/64s: flush L1D after user accesses 2020-11-22 10:02:26 +01:00
serial.h
setjmp.h powerpc: Make setjmp/longjmp signature standard 2020-04-17 10:48:54 +02:00
setup.h powerpc/64s: flush L1D after user accesses 2020-11-22 10:02:26 +01:00
sfp-machine.h powerpc/math-emu: Update macros from GCC 2019-12-13 08:52:25 +01:00
shmparam.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
signal.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
slice.h powerpc/mm/slice: Simplify and optimise slice context initialisation 2018-03-13 23:43:05 +11:00
smp.h powerpc: NMI IPI make NMI IPIs fully sychronous 2018-07-24 22:03:14 +10:00
smu.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sparsemem.h powerpc/mm: Increase MAX_PHYSMEM_BITS to 128TB with SPARSEMEM_VMEMMAP config 2018-07-24 22:03:17 +10:00
spinlock.h powerpc/spinlocks: Include correct header for static key 2020-01-12 12:17:23 +01:00
spinlock_types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spu.h
spu_csa.h
spu_info.h
spu_priv1.h
sstep.h powerpc/sstep: Introduce GETTYPE macro 2018-06-03 21:19:40 +10:00
stacktrace.h powerpc: Add show_user_instructions() 2018-08-08 00:32:30 +10:00
string.h powerpc/lib: Implement strlen() in assembly for PPC32 2018-08-07 21:49:30 +10:00
swab.h
swiotlb.h powerpc: rename swiotlb_dma_ops 2018-01-15 09:35:26 +01:00
switch_to.h powerpc: use task_pid_nr() for TID allocation 2018-06-03 20:40:31 +10:00
synch.h powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00
syscall.h
syscalls.h powerpc/syscalls: switch rtas(2) to SYSCALL_DEFINE 2018-05-10 23:25:14 +10:00
systbl.h powerpc: Wire up io_pgetevents 2018-06-23 21:43:21 +10:00
tce.h powerpc/powernv/pci: Remove SWINV constants and obsolete TCE code 2016-07-17 16:42:47 +10:00
termios.h
thread_info.h powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00
time.h powerpc: remove unused to_tm() helper 2018-06-03 20:43:34 +10:00
timex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlb.h powerpc/64s/radix: Fix mm_cpumask trimming race vs kthread_use_mm 2020-10-30 10:38:19 +01:00
tlbflush.h powerpc: split asm/tlbflush.h 2018-07-30 22:48:21 +10:00
tm.h powerpc: Export tm_enable()/tm_disable/tm_abort() APIs 2018-05-24 16:04:02 +10:00
topology.h powerpc/pseries: Perform full re-add of CPU for topology update post-migration 2019-04-05 22:33:13 +02:00
trace.h powerpc/pseries: hcall_exit tracepoint retval should be signed 2018-05-10 23:17:43 +10:00
trace_clock.h
tsi108.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
tsi108_irq.h
tsi108_pci.h
types.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
uaccess.h powerpc/uaccess: Evaluate macro arguments once, before user access is allowed 2020-11-22 10:02:25 +01:00
udbg.h
uic.h
unaligned.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
uninorth.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unistd.h powerpc: Wire up io_pgetevents 2018-06-23 21:43:21 +10:00
uprobes.h
user.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vas.h powerpc/vas: Define vas_win_id() 2017-11-12 09:03:10 +11:00
vdso.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vdso_datapage.h powerpc: Fix vDSO clock_getres() 2019-12-17 20:35:40 +01:00
vga.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vio.h
word-at-a-time.h powerpc: EX_TABLE macro for exception tables 2016-11-14 11:11:51 +11:00
xics.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xilinx_intc.h powerpc/virtex: Use generic xilinx irqchip driver 2016-11-29 09:14:50 +00:00
xilinx_pci.h
xive-regs.h powerpc/xive: Remove (almost) unused macros 2018-06-03 20:43:35 +10:00
xive.h powerpc/xive: Remove xive_kexec_teardown_cpu() 2018-08-07 21:49:28 +10:00
xmon.h powerpc/xmon: Add __printf annotation to xmon_printf() 2018-05-25 12:04:36 +10:00
xor.h powerpc/altivec: Add missing prototypes for altivec 2018-05-25 12:04:38 +10:00
xor_altivec.h powerpc/altivec: Add missing prototypes for altivec 2018-05-25 12:04:38 +10:00