From: Yang Zhang <yang.z.zhang@xxxxxxxxx>
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: Yang Zhang <yang.z.zhang@xxxxxxxxx>
---
virt/kvm/ioapic.h | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
index 2fc61a5..87cd94b 100644
--- a/virt/kvm/ioapic.h
+++ b/virt/kvm/ioapic.h
@@ -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
--
1.7.1
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