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authorYang Zhang <yang.z.zhang@Intel.com>2013-04-11 19:21:40 +0800
committerMarcelo Tosatti <mtosatti@redhat.com>2013-04-15 23:20:34 -0300
commitaa2fbe6d44892070d78995f0df875ce930904e29 (patch)
treebc2350a65c4e656df5597ebe4111bcfd98116bfe /virt/kvm/irq_comm.c
parentf3bff6318fa0f54956b02ed451d9b120441006ea (diff)
downloadlinux-aa2fbe6d44892070d78995f0df875ce930904e29.tar.bz2
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.c19
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;