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| author | Andy Lutomirski <luto@kernel.org> | 2015-03-18 18:33:30 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-03-23 11:13:41 +0100 |
| commit | 383f3af3f88aadafe1fcf1948987ad538683fb8c (patch) | |
| tree | 026e66b686487ce83da463d2f2e6183e6ec20520 /arch/x86/kernel/traps.c | |
| parent | a67e7277d01ccfd39b0db5a198c2643cc19dd79c (diff) | |
| download | op-kernel-dev-383f3af3f88aadafe1fcf1948987ad538683fb8c.zip op-kernel-dev-383f3af3f88aadafe1fcf1948987ad538683fb8c.tar.gz | |
x86/asm/entry, perf: Explicitly optimize vm86 handling in code_segment_base()
There's no point in checking the VM bit on 64-bit, and, since
we're explicitly checking it, we can use user_mode_ignore_vm86()
after the check.
While we're at it, rearrange the #ifdef slightly to make the code
flow a bit clearer.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brad Spengler <spender@grsecurity.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/dc1457a734feccd03a19bb3538a7648582f57cdd.1426728647.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/traps.c')
0 files changed, 0 insertions, 0 deletions
