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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-07-29 10:43:18 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-01 15:06:23 +0200 |
| commit | 3bb345f387dd26beb097cf776e342bc0d96d805a (patch) | |
| tree | 39b5e7634f75136c0b8917211b04462d5831735d /arch/x86/include | |
| parent | bdaffe1d93e7eddbcc71d074a5d49eba7fe1c765 (diff) | |
| download | blackbird-op-linux-3bb345f387dd26beb097cf776e342bc0d96d805a.tar.gz blackbird-op-linux-3bb345f387dd26beb097cf776e342bc0d96d805a.zip | |
KVM: x86: store IOAPIC-handled vectors in each VCPU
We can reuse the algorithm that computes the EOI exit bitmap to figure
out which vectors are handled by the IOAPIC. The only difference
between the two is for edge-triggered interrupts other than IRQ8
that have no notifiers active; however, the IOAPIC does not have to
do anything special for these interrupts anyway.
This again limits the interactions between the IOAPIC and the LAPIC,
making it easier to move the former to userspace.
Inspired by a patch from Steve Rutherford.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 2beee0382088..33609c2c743b 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -396,6 +396,7 @@ struct kvm_vcpu_arch { u64 efer; u64 apic_base; struct kvm_lapic *apic; /* kernel irqchip context */ + u64 eoi_exit_bitmap[4]; unsigned long apic_attention; int32_t apic_arb_prio; int mp_state; @@ -822,7 +823,7 @@ struct kvm_x86_ops { int (*vm_has_apicv)(struct kvm *kvm); void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr); void (*hwapic_isr_update)(struct kvm *kvm, int isr); - void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap); + void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu); void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set); void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa); void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector); |
