| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.17 069/343] libbpf: Fix accessing syscall arguments on powerpc | Date | Tue, 12 Apr 2022 08:28:07 +0200 |
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From: Ilya Leoshkevich <iii@linux.ibm.com>
[ Upstream commit f07f1503469b11b739892d50c836992ffbe026ee ]
powerpc does not select ARCH_HAS_SYSCALL_WRAPPER, so its syscall handlers take "unpacked" syscall arguments. Indicate this to libbpf using PT_REGS_SYSCALL_REGS macro.
Reported-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Link: https://lore.kernel.org/bpf/20220209021745.2215452-5-iii@linux.ibm.com Signed-off-by: Sasha Levin <sashal@kernel.org> --- tools/lib/bpf/bpf_tracing.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h index e1b505606882..41f5f3149875 100644 --- a/tools/lib/bpf/bpf_tracing.h +++ b/tools/lib/bpf/bpf_tracing.h @@ -178,6 +178,8 @@ #define __PT_RC_REG gpr[3] #define __PT_SP_REG sp #define __PT_IP_REG nip +/* powerpc does not select ARCH_HAS_SYSCALL_WRAPPER. */ +#define PT_REGS_SYSCALL_REGS(ctx) ctx #elif defined(bpf_target_sparc) -- 2.35.1
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