From: Yang Zhang <[email protected]> when virtual interrupt delivery avaliable, register a rtc eoi notifier to force vmexit when writing eoi for rtc interupt
Signed-off-by: Yang Zhang <[email protected]> --- virt/kvm/ioapic.c | 26 ++++++++++++++++++++++++++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index ed6f111..2c6235c 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -87,6 +87,30 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic, return result; } +#ifdef CONFIG_X86 +static void kvm_rtc_ack_irq(struct kvm_irq_ack_notifier *kian) +{ + return; +} + +static void rtc_register_notifier(struct kvm_ioapic *ioapic) +{ + if (!kvm_apic_vid_enabled(ioapic->kvm)) + return; + + ioapic->rtc_status.irq_ack_notifier.gsi = 8; + ioapic->rtc_status.irq_ack_notifier.irq_acked = kvm_rtc_ack_irq; + kvm_register_irq_ack_notifier(ioapic->kvm, + &ioapic->rtc_status.irq_ack_notifier); +} +#else + +static void rtc_register_notifier(struct kvm_ioapic *ioapic) +{ + return; +} +#endif + static int ioapic_service(struct kvm_ioapic *ioapic, unsigned int idx) { union kvm_ioapic_redirect_entry *pent; @@ -458,6 +482,8 @@ int kvm_ioapic_init(struct kvm *kvm) kfree(ioapic); } + rtc_register_notifier(ioapic); + return ret; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
