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KVM: SVM: Do not throw warning when calling avic_vcpu_load on a running vcpu

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Originalliy, this WARN_ON is designed to detect when calling
avic_vcpu_load() on an already running vcpu in AVIC mode (i.e. the AVIC
is_running bit is set).

However, for x2AVIC, the vCPU can switch from xAPIC to x2APIC mode while in
running state, in which the avic_vcpu_load() will be called from
svm_refresh_apicv_exec_ctrl().

Therefore, remove this warning since it is no longer appropriate.

Reviewed-by: Maxim Levitsky <[email protected]>
Reviewed-by: Pankaj Gupta <[email protected]>
Signed-off-by: Suravee Suthikulpanit <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
This commit is contained in:
Suravee Suthikulpanit authored and Paolo Bonzini committed 2022-06-24 12:50:49 -04:00
1 parent 4d1d7942e3
commit c0caeee65a
1 file changed
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arch/x86/kvm/svm/avic.c
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@@ -1030,7 +1030,6 @@ void avic_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
return;
entry = READ_ONCE(*(svm->avic_physical_id_cache));
WARN_ON(entry & AVIC_PHYSICAL_ID_ENTRY_IS_RUNNING_MASK);
entry &= ~AVIC_PHYSICAL_ID_ENTRY_HOST_PHYSICAL_ID_MASK;
entry |= (h_physical_id & AVIC_PHYSICAL_ID_ENTRY_HOST_PHYSICAL_ID_MASK);