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authorDave Martin <Dave.Martin@arm.com>2019-01-04 13:09:50 +0000
committerWill Deacon <will.deacon@arm.com>2019-01-04 13:31:45 +0000
commitee1b465b303591d3a04d403122bbc0d7026520fb (patch)
tree21f77569f463ef3300e5aea95c14e0b96cca933f /arch
parenteb4f5213251833567570df1a09803f895653274d (diff)
downloadlinux-ee1b465b303591d3a04d403122bbc0d7026520fb.tar.gz
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 two structures are the same size anyway, so there is no functional or ABI change. Signed-off-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/include/uapi/asm/ptrace.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h
index c2f249bcd829..6c40b3db3285 100644
--- a/arch/arm64/include/uapi/asm/ptrace.h
+++ b/arch/arm64/include/uapi/asm/ptrace.h
@@ -131,7 +131,7 @@ 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)
/*