Commit 750bd41a authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

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: 9a10ccb2 ("powerpc/pseries: move hcall_tracepoint_refcount out of .toc")
Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230509091600.70994-1-npiggin@gmail.com
parent 11073886

arch/powerpc/platforms/pseries/hvCall.S

+1 −0
Original line number Diff line number Diff line
@@ -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;						\