Messages in this thread Patch in this message | | | From | Radim Krčmář <> | Subject | [PATCH 1/4] KVM: x86: deliver phys lowest-prio | Date | Thu, 27 Nov 2014 20:03:11 +0100 |
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Physical mode can't address more than one APIC, but lowest-prio is allowed, so we just reuse our paths.
SDM 10.6.2.1 Physical Destination: Also, for any non-broadcast IPI or I/O subsystem initiated interrupt with lowest priority delivery mode, software must ensure that APICs defined in the interrupt address are present and enabled to receive interrupts.
We could warn on top of that.
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> --- arch/x86/kvm/lapic.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index e0e5642..e8ad09d 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -691,8 +691,6 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src, goto out; if (irq->dest_mode == 0) { /* physical mode */ - if (irq->delivery_mode == APIC_DM_LOWEST) - goto out; dst = &map->phys_map[irq->dest_id & 0xff]; } else { u32 mda = irq->dest_id << (32 - map->ldr_bits); -- 2.1.0
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