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KVM: nVMX: we support 1GB EPT pages 

Large pages at the PDPE level can be emulated by the MMU, so the bit
can be set unconditionally in the EPT capabilities MSR.  The same is
true of 2MB EPT pages, though all Intel processors with EPT in practice
support those.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-03-08 10:49:19 +01:00 committed by Radim Krčmář
parent ad6260da1e
commit 7db742654d
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kvm/vmx.c
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@ -2759,14 +2759,14 @@ static void nested_vmx_setup_ctls_msrs(struct vcpu_vmx *vmx)
vmx->nested.nested_vmx_secondary_ctls_high |=
SECONDARY_EXEC_ENABLE_EPT;
vmx->nested.nested_vmx_ept_caps = VMX_EPT_PAGE_WALK_4_BIT |
VMX_EPTP_WB_BIT | VMX_EPT_2MB_PAGE_BIT |
VMX_EPT_INVEPT_BIT;
VMX_EPTP_WB_BIT | VMX_EPT_INVEPT_BIT;
if (cpu_has_vmx_ept_execute_only())
vmx->nested.nested_vmx_ept_caps |=
VMX_EPT_EXECUTE_ONLY_BIT;
vmx->nested.nested_vmx_ept_caps &= vmx_capability.ept;
vmx->nested.nested_vmx_ept_caps |= VMX_EPT_EXTENT_GLOBAL_BIT |
VMX_EPT_EXTENT_CONTEXT_BIT;
VMX_EPT_EXTENT_CONTEXT_BIT | VMX_EPT_2MB_PAGE_BIT |
VMX_EPT_1GB_PAGE_BIT;
} else
vmx->nested.nested_vmx_ept_caps = 0;