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Commit 8dc6aade authored by Yang Zhang's avatar Yang Zhang Committed by Marcelo Tosatti
Browse files

KVM: Introduce struct rtc_status 



rtc_status is used to track RTC interrupt delivery status. The pending_eoi
will be increased by vcpu who received RTC interrupt and will be decreased
when EOI to this interrupt.
Also, we use dest_map to record the destination vcpu to avoid the case that
vcpu who didn't get the RTC interupt, but issued EOI with same vector of RTC
and descreased pending_eoi by mistake.

Signed-off-by: default avatarYang Zhang <yang.z.zhang@Intel.com>
Reviewed-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 1fcc7890

virt/kvm/ioapic.h

+12 −0
Original line number Diff line number Diff line
@@ -34,6 +34,17 @@ struct kvm_vcpu; 
#define	IOAPIC_INIT			0x5

#define	IOAPIC_EXTINT			0x7



#ifdef CONFIG_X86

#define RTC_GSI 8

#else

#define RTC_GSI -1U

#endif



struct rtc_status {

	int pending_eoi;

	DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);

};



struct kvm_ioapic {

	u64 base_address;

	u32 ioregsel;
@@ -47,6 +58,7 @@ struct kvm_ioapic { 
	void (*ack_notifier)(void *opaque, int irq);

	spinlock_t lock;

	DECLARE_BITMAP(handled_vectors, 256);

	struct rtc_status rtc_status;

};



#ifdef DEBUG