From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii.nakryiko@gmail.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>
Cc: bpf@vger.kernel.org, Ilya Leoshkevich <iii@linux.ibm.com>,
"Naveen N . Rao" <naveen.n.rao@linux.vnet.ibm.com>
Subject: [PATCH bpf-next v5 04/10] libbpf: Fix accessing syscall arguments on powerpc
Date: Wed, 9 Feb 2022 03:17:39 +0100 [thread overview]
Message-ID: <20220209021745.2215452-5-iii@linux.ibm.com> (raw)
In-Reply-To: <20220209021745.2215452-1-iii@linux.ibm.com>
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>
Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
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 a5e92656bfba..20bc63770c9f 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -180,6 +180,8 @@
#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)
--
2.34.1
next prev parent reply other threads:[~2022-02-09 2:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-09 2:17 [PATCH bpf-next v5 00/10] Fix accessing syscall arguments Ilya Leoshkevich
2022-02-09 2:17 ` [PATCH bpf-next v5 01/10] selftests/bpf: Fix an endianness issue in bpf_syscall_macro test Ilya Leoshkevich
2022-02-09 2:17 ` [PATCH bpf-next v5 02/10] libbpf: Add PT_REGS_SYSCALL_REGS macro Ilya Leoshkevich
2022-02-09 2:17 ` [PATCH bpf-next v5 03/10] selftests/bpf: Use PT_REGS_SYSCALL_REGS in bpf_syscall_macro Ilya Leoshkevich
2022-02-09 2:17 ` Ilya Leoshkevich [this message]
2022-02-09 2:17 ` [PATCH bpf-next v5 05/10] libbpf: Fix riscv register names Ilya Leoshkevich
2022-02-09 2:17 ` [PATCH bpf-next v5 06/10] libbpf: Fix accessing syscall arguments on riscv Ilya Leoshkevich
2022-02-09 2:17 ` [PATCH bpf-next v5 07/10] selftests/bpf: Skip test_bpf_syscall_macro:syscall_arg1 on arm64 and s390 Ilya Leoshkevich
2022-02-09 2:17 ` [PATCH bpf-next v5 08/10] libbpf: Allow overriding PT_REGS_PARM1{_CORE}_SYSCALL Ilya Leoshkevich
2022-02-09 5:39 ` Andrii Nakryiko
2022-02-09 2:17 ` [PATCH bpf-next v5 09/10] libbpf: Fix accessing the first syscall argument on arm64 Ilya Leoshkevich
2022-02-09 5:39 ` Andrii Nakryiko
2022-02-09 2:17 ` [PATCH bpf-next v5 10/10] libbpf: Fix accessing the first syscall argument on s390 Ilya Leoshkevich
2022-02-09 5:39 ` Andrii Nakryiko
2022-02-09 5:39 ` [PATCH bpf-next v5 00/10] Fix accessing syscall arguments Andrii Nakryiko
2022-02-09 5:40 ` patchwork-bot+netdevbpf
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