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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2020-03-31 16:03:42 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-06-02 20:59:11 +1000 |
| commit | e6209318d63e2774c5ab214b14b948079e040064 (patch) | |
| tree | 5fe75a1bfc1faa8bf6eee6a1253e81c522e08c54 /arch | |
| parent | f892c21d2efb3b86ecbf8f5a95ea4abeedcc91b0 (diff) | |
| download | linux-e6209318d63e2774c5ab214b14b948079e040064.tar.bz2 | |
powerpc/32s: 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/dabed523c1b8955dd425152ce260b390053e727a.1585670437.git.christophe.leroy@c-s.fr
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/book3s32/hash_low.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s32/hash_low.S b/arch/powerpc/mm/book3s32/hash_low.S index 7afd7ec4ca50..2702e8762c0d 100644 --- a/arch/powerpc/mm/book3s32/hash_low.S +++ b/arch/powerpc/mm/book3s32/hash_low.S @@ -163,6 +163,7 @@ _GLOBAL(hash_page) stw r0, (mmu_hash_lock - PAGE_OFFSET)@l(r8) blr #endif /* CONFIG_SMP */ +_ASM_NOKPROBE_SYMBOL(hash_page) /* * Add an entry for a particular page to the hash table. @@ -267,6 +268,7 @@ _GLOBAL(add_hash_page) lwz r0,4(r1) mtlr r0 blr +_ASM_NOKPROBE_SYMBOL(add_hash_page) /* * This routine adds a hardware PTE to the hash table. @@ -474,6 +476,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT) sync /* make sure pte updates get to memory */ blr +_ASM_NOKPROBE_SYMBOL(create_hpte) .section .bss .align 2 @@ -630,6 +633,7 @@ _GLOBAL(flush_hash_pages) isync blr EXPORT_SYMBOL(flush_hash_pages) +_ASM_NOKPROBE_SYMBOL(flush_hash_pages) /* * Flush an entry from the TLB @@ -667,6 +671,7 @@ _GLOBAL(_tlbie) sync #endif /* CONFIG_SMP */ blr +_ASM_NOKPROBE_SYMBOL(_tlbie) /* * Flush the entire TLB. 603/603e only @@ -708,3 +713,4 @@ _GLOBAL(_tlbia) isync #endif /* CONFIG_SMP */ blr +_ASM_NOKPROBE_SYMBOL(_tlbia) |