Ingo Molnar wrote on 2013-03-08: > > * Gleb Natapov <gleb@xxxxxxxxxx> wrote: > >> On Fri, Mar 08, 2013 at 02:26:25PM +0100, Ingo Molnar wrote: >>> >>> * Yang Zhang <yang.z.zhang@xxxxxxxxx> wrote: >>> >>>> diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c >>>> index 6e03b0d..2329a54 100644 >>>> --- a/arch/x86/kernel/irqinit.c >>>> +++ b/arch/x86/kernel/irqinit.c >>>> @@ -205,6 +205,10 @@ static void __init apic_intr_init(void) >>>> >>>> /* IPI for X86 platform specific use */ >>>> alloc_intr_gate(X86_PLATFORM_IPI_VECTOR, x86_platform_ipi); >>>> +#ifdef CONFIG_HAVE_KVM >>>> + /* IPI for KVM to deliver posted interrupt */ >>>> + alloc_intr_gate(POSTED_INTR_VECTOR, kvm_posted_intr_ipi); >>>> +#endif >>> >>> Please avoid wasting an IDT entry by reusing x86_platform_ipi. >>> >>> A KVM guest is in essence one type of 'x86 platform', and this callback is used >>> by hardware platforms, so collision is not an issue AFAICS. >> >> This is IPI send by a host though. > > But received on the guest side, right? Yes, both guest and host will receive it. Best regards, Yang -- 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
