KVM: nVMX: Report 2MB EPT pages as supported

PATCH New Jan Kiszka 1 participant 1 message Oct 23, 2013

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Jan Kiszka

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2013-10-23 14:00 UTC #0 lore raw

PATCH 1/1 KVM: nVMX: Report 2MB EPT pages as supported

As long as the hardware provides us 2MB EPT pages, we can also expose them to the guest because our shadow EPT code already supports this feature.

Signed-off-by Jan Kiszka <[email protected]>

---
 arch/x86/kvm/vmx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

arch/x86/kvm/vmx.c +2 -1

index 06fd762..feef3a1 100644
@@ -2261,7 +2261,8 @@ static __init void nested_vmx_setup_ctls_msrs(void)
 		/* nested EPT: emulate EPT also to L1 */
 		nested_vmx_secondary_ctls_high |= SECONDARY_EXEC_ENABLE_EPT;
 		nested_vmx_ept_caps = VMX_EPT_PAGE_WALK_4_BIT |
-			 VMX_EPTP_WB_BIT | VMX_EPT_INVEPT_BIT;
+			 VMX_EPTP_WB_BIT | VMX_EPT_2MB_PAGE_BIT |
+			 VMX_EPT_INVEPT_BIT;
 		nested_vmx_ept_caps &= vmx_capability.ept;
 		/*
 		 * Since invept is completely emulated we support both global

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