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Subject[RFC PATCH 07/13] KVM: SVM: Update avic_kick_target_vcpus to support 32-bit APIC ID
Date
In x2APIC mode, ICRH contains 32-bit destination APIC ID.
So, update the avic_kick_target_vcpus() accordingly.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
arch/x86/kvm/svm/avic.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index 60f30e48d816..215d8a7dbc1d 100644
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -307,10 +307,16 @@ void avic_ring_doorbell(struct kvm_vcpu *vcpu)
}

static void avic_kick_target_vcpus(struct kvm *kvm, struct kvm_lapic *source,
- u32 icrl, u32 icrh)
+ u32 icrl, u32 icrh, bool x2apic_enabled)
{
struct kvm_vcpu *vcpu;
unsigned long i;
+ u32 dest;
+
+ if (x2apic_enabled)
+ dest = icrh;
+ else
+ dest = GET_APIC_DEST_FIELD(icrh);

/*
* Wake any target vCPUs that are blocking, i.e. waiting for a wake
@@ -320,8 +326,7 @@ static void avic_kick_target_vcpus(struct kvm *kvm, struct kvm_lapic *source,
*/
kvm_for_each_vcpu(i, vcpu, kvm) {
if (kvm_apic_match_dest(vcpu, source, icrl & APIC_SHORT_MASK,
- GET_APIC_DEST_FIELD(icrh),
- icrl & APIC_DEST_MASK)) {
+ dest, icrl & APIC_DEST_MASK)) {
vcpu->arch.apic->irr_pending = true;
svm_complete_interrupt_delivery(vcpu,
icrl & APIC_MODE_MASK,
@@ -364,7 +369,7 @@ int avic_incomplete_ipi_interception(struct kvm_vcpu *vcpu)
* set the appropriate IRR bits on the valid target
* vcpus. So, we just need to kick the appropriate vcpu.
*/
- avic_kick_target_vcpus(vcpu->kvm, apic, icrl, icrh);
+ avic_kick_target_vcpus(vcpu->kvm, apic, icrl, icrh, svm->x2apic_enabled);
break;
case AVIC_IPI_FAILURE_INVALID_TARGET:
break;
--
2.25.1
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