From 0dede80d25ae2005f8af7235809fc09a7c47c62e Mon Sep 17 00:00:00 2001 From: Dave Martin Date: Tue, 11 Dec 2018 19:26:46 +0000 Subject: [PATCH 2/3] arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition SVE_PT_REGS_OFFSET is supposed to indicate the offset for skipping over the ptrace NT_ARM_SVE header (struct user_sve_header) to the start of the SVE register data proper. However, currently SVE_PT_REGS_OFFSET is defined in terms of struct sve_context, which is wrong: that structure describes the SVE header in the signal frame, not in the ptrace regset. This patch fixes the definition to use the ptrace header structure struct user_sve_header instead. By good fortune, the to structures are the same size anyway, so there is no functional or ABI change. Signed-off-by: Dave Martin Signed-off-by: Bruce Ashfield Upstream-Status: Submitted [https://www.spinics.net/lists/arm-kernel/msg694800.html] --- arch/arm64/include/uapi/asm/ptrace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h index 98c4ce55d9c3..ad64d2c92ef5 100644 --- a/arch/arm64/include/uapi/asm/ptrace.h +++ b/arch/arm64/include/uapi/asm/ptrace.h @@ -130,7 +130,7 @@ struct user_sve_header { /* Offset from the start of struct user_sve_header to the register data */ #define SVE_PT_REGS_OFFSET \ - ((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \ + ((sizeof(struct user_sve_header) + (SVE_VQ_BYTES - 1)) \ / SVE_VQ_BYTES * SVE_VQ_BYTES) /* -- 2.5.0