KVM: nVMX: Emulate L1 individual-address invvpid by L0 individual-address invvpid

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When vmcs12 uses VPID, all TLB entries populated by L2 are tagged with
vmx->nested.vpid02. Currently, INVVPID executed by L1 is emulated by L0
by using INVVPID single/global-context to flush all TLB entries
tagged with vmx->nested.vpid02 regardless of INVVPID type executed by
L1.

However, we can easily optimize the case of L1 INVVPID on an
individual-address. Just INVVPID given individual-address tagged with
vmx->nested.vpid02.

Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
[Squashed with a preparatory patch that added the !operand.vpid line.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

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Liran Alon 2018-05-22 17:16:15 +03:00 • committed by Radim Krčmář

parent 6f1e03bcab

commit cd9a491f6e

1 changed files with 16 additions and 3 deletions

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arch/x86/kvm/vmx.c

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