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| author | Nicholas Piggin <npiggin@gmail.com> | 2023-05-09 12:15:59 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-08-25 01:39:30 +0300 |
| commit | 750bd41aeaeb1f0e0128aa4f8fcd6dd759713641 (patch) | |
| tree | 6500d622f198aaabef41a9c8c6c3f05924e98bfa /arch/powerpc | |
| parent | 11073886cc4a2746845e8d113cadec2578c85033 (diff) | |
| download | linux-750bd41aeaeb1f0e0128aa4f8fcd6dd759713641.tar.xz | |
powerpc/pseries: Fix hcall tracepoints with JUMP_LABEL=n
With JUMP_LABEL=n, hcall_tracepoint_refcount's address is being tested
instead of its value. This results in the tracing slowpath always being
taken unnecessarily.
Fixes: 9a10ccb29c0a2 ("powerpc/pseries: move hcall_tracepoint_refcount out of .toc")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230509091600.70994-1-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/pseries/hvCall.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S index 35254ac7af5e..ca0674b0b683 100644 --- a/arch/powerpc/platforms/pseries/hvCall.S +++ b/arch/powerpc/platforms/pseries/hvCall.S @@ -91,6 +91,7 @@ BEGIN_FTR_SECTION; \ b 1f; \ END_FTR_SECTION(0, 1); \ LOAD_REG_ADDR(r12, hcall_tracepoint_refcount) ; \ + ld r12,0(r12); \ std r12,32(r1); \ cmpdi r12,0; \ bne- LABEL; \ |