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>
Subject: [PATCH bpf-next 1/3] s390/bpf: Add orig_gpr2 to user_pt_regs
Date: Wed, 2 Feb 2022 00:41:58 +0100 [thread overview]
Message-ID: <20220201234200.1836443-2-iii@linux.ibm.com> (raw)
In-Reply-To: <20220201234200.1836443-1-iii@linux.ibm.com>
user_pt_regs is used by eBPF in order to access userspace registers -
see commit 466698e654e8 ("s390/bpf: correct broken uapi for
BPF_PROG_TYPE_PERF_EVENT program type"). In order to access the first
syscall argument from eBPF programs, we need to export orig_gpr2.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
arch/s390/include/asm/ptrace.h | 2 +-
arch/s390/include/uapi/asm/ptrace.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 4ffa8e7f0ed3..c8698e643904 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -83,9 +83,9 @@ struct pt_regs {
unsigned long args[1];
psw_t psw;
unsigned long gprs[NUM_GPRS];
+ unsigned long orig_gpr2;
};
};
- unsigned long orig_gpr2;
union {
struct {
unsigned int int_code;
diff --git a/arch/s390/include/uapi/asm/ptrace.h b/arch/s390/include/uapi/asm/ptrace.h
index ad64d673b5e6..b3dec603f507 100644
--- a/arch/s390/include/uapi/asm/ptrace.h
+++ b/arch/s390/include/uapi/asm/ptrace.h
@@ -295,6 +295,7 @@ typedef struct {
unsigned long args[1];
psw_t psw;
unsigned long gprs[NUM_GPRS];
+ unsigned long orig_gpr2;
} user_pt_regs;
/*
--
2.34.1
next prev parent reply other threads:[~2022-02-01 23:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-01 23:41 [PATCH bpf-next 0/3] libbpf: Fix accessing the first syscall argument on s390 Ilya Leoshkevich
2022-02-01 23:41 ` Ilya Leoshkevich [this message]
2022-02-02 14:19 ` [PATCH bpf-next 1/3] s390/bpf: Add orig_gpr2 to user_pt_regs Vasily Gorbik
2022-02-02 17:23 ` Christian Borntraeger
2022-02-03 9:40 ` Heiko Carstens
2022-02-02 20:14 ` Heiko Carstens
2022-02-02 22:49 ` Andrii Nakryiko
2022-02-04 6:07 ` Naveen N. Rao
2022-02-04 8:21 ` Naveen N. Rao
2022-02-04 12:20 ` Ilya Leoshkevich
2022-02-04 13:49 ` Naveen N. Rao
2022-02-01 23:41 ` [PATCH bpf-next 2/3] selftests/bpf: Fix an endianness issue in bpf_syscall_macro test Ilya Leoshkevich
2022-02-01 23:42 ` [PATCH bpf-next 3/3] libbpf: Fix accessing the first syscall argument on s390 Ilya Leoshkevich
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