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authorSean Christopherson <seanjc@google.com>2021-02-25 12:47:42 -0800
committerPaolo Bonzini <pbonzini@redhat.com>2021-03-15 04:43:48 -0400
commite7b7bdea77f3277fe49f714c983d0f38f7cb0d86 (patch)
treed9423f780b1077a459ee6e808920c4f7f1cdd434 /Documentation/virt
parentd6b87f256591cf6be78825db6a09a5218666e539 (diff)
downloadlinux-e7b7bdea77f3277fe49f714c983d0f38f7cb0d86.tar.bz2
KVM: x86/mmu: Move logic for setting SPTE masks for EPT into the MMU proper
Let the MMU deal with the SPTE masks to avoid splitting the logic and knowledge across the MMU and VMX. The SPTE masks that are used for EPT are very, very tightly coupled to the MMU implementation. The use of available bits, the existence of A/D types, the fact that shadow_x_mask even exists, and so on and so forth are all baked into the MMU implementation. Cross referencing the params to the masks is also a nightmare, as pretty much every param is a u64. A future patch will make the location of the MMU_WRITABLE and HOST_WRITABLE bits MMU specific, to free up bit 11 for a MMU_PRESENT bit. Doing that change with the current kvm_mmu_set_mask_ptes() would be an absolute mess. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210225204749.1512652-18-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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