diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2020-03-31 16:03:39 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-06-02 20:59:09 +1000 |
| commit | 32a820670fa00419375a964ca8bc569e1499b90d (patch) | |
| tree | 7d3f1834491fd7e3d3c104140f69b5a4f4108f91 | |
| parent | 7aa85127b1a170694b042cbc35a07afe3904173e (diff) | |
powerpc/powermac: Blacklist functions running with MMU disabled for kprobe
kprobe does not handle events happening in real mode, all
functions running with MMU disabled have to be blacklisted.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/6316e8883753499073f47301857e4e88b73c3ddd.1585670437.git.christophe.leroy@c-s.fr
| -rw-r--r-- | arch/powerpc/platforms/powermac/cache.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/sleep.S | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powermac/cache.S b/arch/powerpc/platforms/powermac/cache.S index da69e0fcb4f1..ced225415486 100644 --- a/arch/powerpc/platforms/powermac/cache.S +++ b/arch/powerpc/platforms/powermac/cache.S @@ -184,6 +184,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) mtlr r10 blr +_ASM_NOKPROBE_SYMBOL(flush_disable_75x) /* This code is for 745x processors */ flush_disable_745x: @@ -351,4 +352,5 @@ END_FTR_SECTION_IFSET(CPU_FTR_L3CR) mtmsr r11 /* restore DR and EE */ isync blr +_ASM_NOKPROBE_SYMBOL(flush_disable_745x) #endif /* CONFIG_PPC_BOOK3S_32 */ diff --git a/arch/powerpc/platforms/powermac/sleep.S b/arch/powerpc/platforms/powermac/sleep.S index bd6085b470b7..f9a680fdd9c4 100644 --- a/arch/powerpc/platforms/powermac/sleep.S +++ b/arch/powerpc/platforms/powermac/sleep.S @@ -244,7 +244,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_SPEC7450) mtmsr r2 isync b 1b - +_ASM_NOKPROBE_SYMBOL(low_cpu_die) /* * Here is the resume code. */ @@ -282,6 +282,7 @@ _GLOBAL(core99_wake_up) lwz r1,0(r3) /* Pass thru to older resume code ... */ +_ASM_NOKPROBE_SYMBOL(core99_wake_up) /* * Here is the resume code for older machines. * r1 has the physical address of SL_PC(sp). @@ -429,6 +430,7 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_USE_HIGH_BATS) lwz r0,4(r1) mtlr r0 blr +_ASM_NOKPROBE_SYMBOL(grackle_wake_up) turn_on_mmu: mflr r4 @@ -438,6 +440,7 @@ turn_on_mmu: sync isync rfi +_ASM_NOKPROBE_SYMBOL(turn_on_mmu) #endif /* defined(CONFIG_PM) || defined(CONFIG_CPU_FREQ) */ |