Commit dbe9e994 authored Mar 17, 2008 by Jeremy Fitzhardinge Committed by Ingo Molnar Apr 24, 2008

xen: no need for domU to worry about MCE/MCA



Mask MCE/MCA out of cpu caps.  Its harmless to leave them there, but
it does prevent the kernel from starting an unnecessary thread.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 229664be

arch/x86/xen/enlighten.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -155,6 +155,8 @@ static void xen_cpuid(unsigned int ax, unsigned int bx,
		if (*ax == 1)
		maskedx = ~((1 << X86_FEATURE_APIC) \| /* disable APIC */
		(1 << X86_FEATURE_ACPI) \| /* disable ACPI */
		(1 << X86_FEATURE_MCE) \| /* disable MCE */
		(1 << X86_FEATURE_MCA) \| /* disable MCA */
		(1 << X86_FEATURE_ACC)); /* thermal monitoring */

		asm(XEN_EMULATE_PREFIX "cpuid"

Admin message