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| author |   Hari Bathini <hbathini@linux.ibm.com> | 2021-07-14 18:17:58 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-07-26 20:38:51 +1000 |
| commit | 8119cefd9a29b71997e62b762932d23499ba4896 (patch) | |
| tree | 8e26180883e80194f962beec5988ec394f335173 /arch/powerpc/platforms/ps3 | |
| parent | Merge branch 'fixes' into next (diff) | |
| download | linux-dev-8119cefd9a29b71997e62b762932d23499ba4896.tar.xz linux-dev-8119cefd9a29b71997e62b762932d23499ba4896.zip | |
powerpc/kexec: blacklist functions called in real mode for kprobe
As kprobe does not handle events happening in real mode, blacklist the
functions that only get called in real mode or in kexec sequence with
MMU turned off.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/162626687834.155313.4692863392927831843.stgit@hbathini-workstation.ibm.com
Diffstat (limited to 'arch/powerpc/platforms/ps3')
| -rw-r--r-- | arch/powerpc/platforms/ps3/htab.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/ps3/mm.c | 8 |
2 files changed, 8 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/ps3/htab.c b/arch/powerpc/platforms/ps3/htab.c index 7ddc7ec6a7c0..ef710a715903 100644 --- a/arch/powerpc/platforms/ps3/htab.c +++ b/arch/powerpc/platforms/ps3/htab.c @@ -169,7 +169,8 @@ static void ps3_hpte_invalidate(unsigned long slot, unsigned long vpn, spin_unlock_irqrestore(&ps3_htab_lock, flags); } -static void ps3_hpte_clear(void) +/* Called during kexec sequence with MMU off */ +static notrace void ps3_hpte_clear(void) { unsigned long hpte_count = (1UL << ppc64_pft_size) >> 4; u64 i; diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c index a81eac35d900..9c44f335c0b9 100644 --- a/arch/powerpc/platforms/ps3/mm.c +++ b/arch/powerpc/platforms/ps3/mm.c @@ -195,9 +195,11 @@ fail: /** * ps3_mm_vas_destroy - + * + * called during kexec sequence with MMU off. */ -void ps3_mm_vas_destroy(void) +notrace void ps3_mm_vas_destroy(void) { int result; @@ -1243,9 +1245,11 @@ void __init ps3_mm_init(void) /** * ps3_mm_shutdown - final cleanup of address space + * + * called during kexec sequence with MMU off. */ -void ps3_mm_shutdown(void) +notrace void ps3_mm_shutdown(void) { ps3_mm_region_destroy(&map.r1); } |