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authorLiran Alon <liran.alon@oracle.com>2019-11-20 15:24:52 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2019-11-20 16:23:27 +0300
commit992edeaefed682511bd173dabd2f54b1ce5387df (patch)
treeca2aaabd383fee2e52e7f3ff90eed6998f31d4ac /virt
parent5637f60b6828c0abfd5fe3cc6922a7106b5366c7 (diff)
downloadlinux-992edeaefed682511bd173dabd2f54b1ce5387df.tar.xz
KVM: nVMX: Assume TLB entries of L1 and L2 are tagged differently if L0 use EPT
Since commit 1313cc2bd8f6 ("kvm: mmu: Add guest_mode to kvm_mmu_page_role"), guest_mode was added to mmu-role and therefore if L0 use EPT, it will always run L1 and L2 with different EPTP. i.e. EPTP01!=EPTP02. Because TLB entries are tagged with EP4TA, KVM can assume TLB entries populated while running L2 are tagged differently than TLB entries populated while running L1. Therefore, update nested_has_guest_tlb_tag() to consider if L0 use EPT instead of if L1 use EPT. Reviewed-by: Joao Martins <joao.m.martins@oracle.com> Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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