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| author | Jan Beulich <JBeulich@suse.com> | 2017-02-03 12:03:25 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-01 12:16:35 +0300 |
| commit | 2140a9942b84dd4bf559dd1215b8f43c36ece5b5 (patch) | |
| tree | bcb70908e5e9a332da019ff33ce2e1aec21f1533 /arch/x86/include/asm/page_64.h | |
| parent | fdbd518adfaf2c10903250dffe70c61ed90b7dd7 (diff) | |
| download | linux-2140a9942b84dd4bf559dd1215b8f43c36ece5b5.tar.xz | |
x86/entry/64: Relax pvops stub clobber specifications
Except for the error_exit case, none of the code paths following the
{DIS,EN}ABLE_INTERRUPTS() invocations being modified here make any
assumptions on register values, so all registers can be clobbered
there. In the error_exit case a minor adjustment to register usage
(at once eliminating an instruction) also allows for this to be true.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/5894556D02000078001366D3@prv-mh.provo.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/page_64.h')
0 files changed, 0 insertions, 0 deletions