diff options
author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-04-11 19:21:40 +0800 |
---|---|---|
committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-04-15 23:20:34 -0300 |
commit | aa2fbe6d44892070d78995f0df875ce930904e29 (patch) | |
tree | bc2350a65c4e656df5597ebe4111bcfd98116bfe /virt/kvm/irq_comm.c | |
parent | f3bff6318fa0f54956b02ed451d9b120441006ea (diff) | |
download | linux-stable-aa2fbe6d44892070d78995f0df875ce930904e29.tar.gz linux-stable-aa2fbe6d44892070d78995f0df875ce930904e29.tar.bz2 linux-stable-aa2fbe6d44892070d78995f0df875ce930904e29.zip |
KVM: Let ioapic know the irq line status
Userspace may deliver RTC interrupt without query the status. So we
want to track RTC EOI for this case.
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/kvm/irq_comm.c')
-rw-r--r-- | virt/kvm/irq_comm.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index 2f07d2e59a2d..8efb580edfef 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -35,7 +35,8 @@ #include "ioapic.h" static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e, - struct kvm *kvm, int irq_source_id, int level) + struct kvm *kvm, int irq_source_id, int level, + bool line_status) { #ifdef CONFIG_X86 struct kvm_pic *pic = pic_irqchip(kvm); @@ -46,10 +47,12 @@ static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e, } static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e, - struct kvm *kvm, int irq_source_id, int level) + struct kvm *kvm, int irq_source_id, int level, + bool line_status) { struct kvm_ioapic *ioapic = kvm->arch.vioapic; - return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, irq_source_id, level); + return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, irq_source_id, level, + line_status); } inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq) @@ -121,7 +124,7 @@ static inline void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry *e, } int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, - struct kvm *kvm, int irq_source_id, int level) + struct kvm *kvm, int irq_source_id, int level, bool line_status) { struct kvm_lapic_irq irq; @@ -159,7 +162,7 @@ int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi) route.msi.address_hi = msi->address_hi; route.msi.data = msi->data; - return kvm_set_msi(&route, kvm, KVM_USERSPACE_IRQ_SOURCE_ID, 1); + return kvm_set_msi(&route, kvm, KVM_USERSPACE_IRQ_SOURCE_ID, 1, false); } /* @@ -168,7 +171,8 @@ int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi) * = 0 Interrupt was coalesced (previous irq is still pending) * > 0 Number of CPUs interrupt was delivered to */ -int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level) +int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, + bool line_status) { struct kvm_kernel_irq_routing_entry *e, irq_set[KVM_NR_IRQCHIPS]; int ret = -1, i = 0; @@ -189,7 +193,8 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level) while(i--) { int r; - r = irq_set[i].set(&irq_set[i], kvm, irq_source_id, level); + r = irq_set[i].set(&irq_set[i], kvm, irq_source_id, level, + line_status); if (r < 0) continue; |