Messages in this thread Patch in this message | | | Date | Fri, 03 Feb 2017 01:58:03 -0700 | From | "Jan Beulich" <> | Subject | [PATCH] ix86: relax a pvops stub clobber specification |
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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> --- arch/x86/entry/entry_32.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- 4.10-rc6/arch/x86/entry/entry_32.S +++ 4.10-rc6-ix86-relax-clobber/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
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