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| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-04-11 19:21:36 +0800 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-04-15 23:20:33 -0300 |
| commit | 8dc6aade5bdc9d436d4ab8328cb15f0adbbc47bf (patch) | |
| tree | 88471ae7c01ef63aff41368fff526fed8c8dfd5d /virt | |
| parent | 1fcc7890dbf32571c25278803ee19182c801c006 (diff) | |
| download | lwn-8dc6aade5bdc9d436d4ab8328cb15f0adbbc47bf.tar.gz lwn-8dc6aade5bdc9d436d4ab8328cb15f0adbbc47bf.zip | |
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.h | 12 |
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 |