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authorYang Zhang <yang.z.zhang@Intel.com>2013-04-11 19:21:36 +0800
committerMarcelo Tosatti <mtosatti@redhat.com>2013-04-15 23:20:33 -0300
commit8dc6aade5bdc9d436d4ab8328cb15f0adbbc47bf (patch)
tree88471ae7c01ef63aff41368fff526fed8c8dfd5d /virt
parent1fcc7890dbf32571c25278803ee19182c801c006 (diff)
downloadlinux-linaro-stable-8dc6aade5bdc9d436d4ab8328cb15f0adbbc47bf.tar.gz
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: Yang Zhang <yang.z.zhang@Intel.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/ioapic.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
index 2fc61a5013d2..87cd94bae372 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