Messages in this thread |  | | Subject | Re: [PATCH 3/3] KVM: x86: do not scan IRR twice on APICv vmentry | From | Paolo Bonzini <> | Date | Fri, 14 Oct 2016 09:45:57 +0200 |
| |
On 14/10/2016 09:32, Yang Zhang wrote: >> >> -void __kvm_apic_update_irr(u32 *pir, void *regs) >> +int __kvm_apic_update_irr(u32 *pir, void *regs) >> { >> - u32 i, pir_val; >> + u32 i, vec; >> + u32 pir_val, irr_val; >> + int max_irr = -1; >> >> - for (i = 0; i <= 7; i++) { >> + for (i = vec = 0; i <= 7; i++, vec += 32) { > > how about ignore the first 32 vectors since they cannot be used as > normal interrupt except nmi interrupt which is special handled.
I think that, while they should not be used as normal interrupts, there's nothing that prevents you from misusing them as normal interrupts.
Paolo
|  |