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In X2APIC mode, the Logical Destination Register is read-only,
which provides a fixed mapping between the logical and physical
APIC IDs. Therefore, there is no Logical APIC ID table in X2AVIC
and the processor uses the X2APIC ID in the backing page to create
a vCPU’s logical ID.
In addition, KVM does not support updating APIC ID in x2APIC mode,
which means AVIC does not need to handle this case.
Therefore, check x2APIC mode when handling physical and logical
APIC ID update, and when invalidating logical APIC ID table.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Suggested-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Message-Id: <20220519102709.24125-7-suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
ab1b1dc131