On Sat, Jul 05, 2014 at 09:47:54AM +0200, Jan Kiszka wrote: > From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> > > We are able to use x2APIC mode in the absence of interrupt remapping on > certain hypervisors. So it if fine to disable IRQ_REMAP without having > to give up x2APIC support. FWIW I did similar thing back when I added x2apic to KVM: http://linux.derkeiler.com/Mailing-Lists/Kernel/2009-06/msg14579.html But was advised against it. > > Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> > --- > arch/x86/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index a8f749e..30a9987 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -310,7 +310,7 @@ config SMP > > config X86_X2APIC > bool "Support x2apic" > - depends on X86_LOCAL_APIC && X86_64 && IRQ_REMAP > + depends on X86_LOCAL_APIC && X86_64 && (IRQ_REMAP || HYPERVISOR_GUEST) > ---help--- > This enables x2apic support on CPUs that have this feature. > > > -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
