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| author | Jan Beulich <JBeulich@suse.com> | 2017-02-03 01:58:03 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-01 10:16:30 +0100 |
| commit | fdbd518adfaf2c10903250dffe70c61ed90b7dd7 (patch) | |
| tree | fc0431d79f205d3b720eb477319eedd91958f52b /arch/x86/entry | |
| parent | 2d6be4abf514fc26c83d239c7f31da1f95e4a31d (diff) | |
| download | op-kernel-dev-fdbd518adfaf2c10903250dffe70c61ed90b7dd7.zip op-kernel-dev-fdbd518adfaf2c10903250dffe70c61ed90b7dd7.tar.gz | |
x86/entry/32: Relax a pvops stub clobber specification
The code at .Lrestore_nocheck does not make any assumptions on register
values, so all registers can be clobbered on code paths leading there.
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/5894542B02000078001366C5@prv-mh.provo.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/entry')
| -rw-r--r-- | arch/x86/entry/entry_32.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S index 57f7ec3..5553475 100644 --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -585,7 +585,7 @@ ENTRY(iret_exc ) * will soon execute iret and the tracer was already set to * the irqstate after the IRET: */ - DISABLE_INTERRUPTS(CLBR_EAX) + DISABLE_INTERRUPTS(CLBR_ANY) lss (%esp), %esp /* switch to espfix segment */ jmp .Lrestore_nocheck #endif |
