[PATCH v3 0/2] x86_64: Sigcontext improvements

From: Andy Lutomirski
Date: Thu Mar 12 2015 - 16:58:37 EST

Patch 1 is IMO a bug fix.

Patch 2 is a cleanup and avoids some confusion. It's also sort of an
API break (no ABI change) because it removes a struct field. But that
struct field has never done anything at all as far as I can tell.

AFAICT this series got bogged down in discussion about patch 2 last
time. I'm only including patch 2 for completeness here -- patch 1
is IMO far more useful, and I'm fine with patch 1 being merged and
tabling patch 2 again.

Changes from v1:
- Add the __USER_DS fix, caught by my sigreturn test.
- Re-tested locally.

Changes from 2:
- Fixed comment style in patch 1.
- Added a better comment in patch 2.

Andy Lutomirski (2):
x86_64,signal: Fix SS handling for signals delivered to 64-bit
x86_64,signal: Remove 'fs' and 'gs' from sigcontext

arch/x86/include/asm/sigcontext.h | 6 +++---
arch/x86/include/uapi/asm/sigcontext.h | 21 ++++++++++++++++++---
arch/x86/kernel/signal.c | 26 +++++++++++++++-----------
3 files changed, 36 insertions(+), 17 deletions(-)


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