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authorNicholas Piggin <npiggin@gmail.com>2023-05-09 19:15:59 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2023-08-25 08:39:30 +1000
commit750bd41aeaeb1f0e0128aa4f8fcd6dd759713641 (patch)
tree6500d622f198aaabef41a9c8c6c3f05924e98bfa /arch/powerpc
parent11073886cc4a2746845e8d113cadec2578c85033 (diff)
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.S1
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; \