Roman,
On 11/4/19 4:05 PM, Roman Kagan wrote:
On Fri, Nov 01, 2019 at 10:41:31PM +0000, Suthikulpanit, Suravee wrote:
AMD SVM AVIC needs to update APIC backing page mapping before changing
APICv mode. Introduce struct kvm_x86_ops.pre_update_apicv_exec_ctrl
function hook to be called prior KVM APICv update request to each vcpu.
This again seems to mix up APIC backing page and APIC access page.
And I must be missing something obvious, but why is it necessary to
unmap the APIC access page while AVIC is disabled? Does keeping it
around stand in the way when working with AVIC disabled?
I have replied to patch 07/17 with explanation.
Yes, keeping the APIC access page while disabling AVIC would cause
the SVM to not function properly.
Thanks,
Suravee
Thanks,
Roman.
