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vmcs->apic_access_page is simply a token that the hypervisor puts into the PFN of a 4KB EPTE (or PTE if using shadow-paging) that triggers APIC-access VMExit or APIC virtualization logic whenever a CPU running in VMX non-root mode read/write from/to this PFN. As every write either triggers an APIC-access VMExit or write is performed on vmcs->virtual_apic_page, the PFN pointed to by vmcs->apic_access_page should never actually be touched by CPU. Therefore, there is no need to mark vmcs02->apic_access_page as dirty after unpin it on L2->L1 emulated VMExit or when L1 exit VMX operation. Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com> Reviewed-by: Joao Martins <joao.m.martins@oracle.com> Reviewed-by: Jim Mattson <jmattson@google.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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