linux-kernel - [PATCH fsgsbase v2 0/4] x86/fsgsbase: Some fixes

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Date:   Fri, 26 Jun 2020 10:24:26 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     x86@...nel.org
Cc:     Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Juergen Gross <jgross@...e.com>,
        Andy Lutomirski <luto@...nel.org>
Subject: [PATCH fsgsbase v2 0/4] x86/fsgsbase: Some fixes

These apply to tip:x86/fsgsbase.

The first two are trivial selftest fixes.  The third one fixes an actual
regression.  The forth one fixes a crash on boot on Xen PV.

Andy Lutomirski (4):
  selftests/x86/fsgsbase: Fix a comment in the ptrace_write_gsbase test
  selftests/x86/fsgsbase: Add a missing memory constraint
  x86/ptrace: Fix 32-bit PTRACE_SETREGS vs fsbase and gsbase
  x86/fsgsbase: Fix Xen PV support

 arch/x86/include/asm/fsgsbase.h               |   2 +
 arch/x86/kernel/process_64.c                  |  24 +-
 arch/x86/kernel/ptrace.c                      |  43 ++-
 tools/testing/selftests/x86/Makefile          |   2 +-
 tools/testing/selftests/x86/fsgsbase.c        |   6 +-
 .../testing/selftests/x86/fsgsbase_restore.c  | 245 ++++++++++++++++++
 6 files changed, 298 insertions(+), 24 deletions(-)
 create mode 100644 tools/testing/selftests/x86/fsgsbase_restore.c

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2.25.4