KVM: nVMX: Reload APIC access page on nested VM-Exit only if necessary

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Defer reloading L1's APIC page by logging the need for a reload and
processing it during nested VM-Exit instead of unconditionally reloading
the APIC page on nested VM-Exit.  This eliminates a TLB flush on the
majority of VM-Exits as the APIC page rarely needs to be reloaded.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200320212833.3507-28-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2020-03-20 14:28:23 -07:00 • committed by Paolo Bonzini

parent c51e1ffee5

commit 1196cb970b

3 changed files with 12 additions and 8 deletions

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9

arch/x86/kvm/vmx/nested.c

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10

arch/x86/kvm/vmx/vmx.c

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1

arch/x86/kvm/vmx/vmx.h

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