diff options
author | Andrey Smetanin <asmetanin@virtuozzo.com> | 2015-11-10 15:36:32 +0300 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-11-25 17:24:21 +0100 |
commit | 6308630bd3dbb6a8a883c4c571ce5e5a759a8a0e (patch) | |
tree | 3f4e51bee7ece38a7784090634906639954227d7 /arch/x86/kvm/irq_comm.c | |
parent | abdb080f7ac8a85547f5e0246362790043bbd3f2 (diff) | |
download | linux-6308630bd3dbb6a8a883c4c571ce5e5a759a8a0e.tar.bz2 |
kvm/x86: split ioapic-handled and EOI exit bitmaps
The function to determine if the vector is handled by ioapic used to
rely on the fact that only ioapic-handled vectors were set up to
cause vmexits when virtual apic was in use.
We're going to break this assumption when introducing Hyper-V
synthetic interrupts: they may need to cause vmexits too.
To achieve that, introduce a new bitmap dedicated specifically for
ioapic-handled vectors, and populate EOI exit bitmap from it for now.
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/irq_comm.c')
-rw-r--r-- | arch/x86/kvm/irq_comm.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c index e39768ca8285..ece901c29351 100644 --- a/arch/x86/kvm/irq_comm.c +++ b/arch/x86/kvm/irq_comm.c @@ -339,7 +339,8 @@ void kvm_arch_post_irq_routing_update(struct kvm *kvm) kvm_make_scan_ioapic_request(kvm); } -void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap) +void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu, + ulong *ioapic_handled_vectors) { struct kvm *kvm = vcpu->kvm; struct kvm_kernel_irq_routing_entry *entry; @@ -369,7 +370,7 @@ void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap) u32 vector = entry->msi.data & 0xff; __set_bit(vector, - (unsigned long *) eoi_exit_bitmap); + ioapic_handled_vectors); } } } |