linux-kernel - [RFC PATCH 07/18] KVM: VMX: Define VMX_EPT_USER_EXECUTABLE

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Message-ID: <20250313203702.575156-8-jon@nutanix.com>
Date: Thu, 13 Mar 2025 13:36:46 -0700
From: Jon Kohler <jon@...anix.com>
To: seanjc@...gle.com, pbonzini@...hat.com, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        x86@...nel.org, hpa@...or.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc: Mickaël Salaün <mic@...ikod.net>,
        Jon Kohler <jon@...anix.com>
Subject: [RFC PATCH 07/18] KVM: VMX: Define VMX_EPT_USER_EXECUTABLE_MASK

From: Mickaël Salaün <mic@...ikod.net>

EPT bit 10 is used to denote user executable pages, for use with Intel
MBEC.

Signed-off-by: Mickaël Salaün <mic@...ikod.net>
Co-developed-by: Jon Kohler <jon@...anix.com>
Signed-off-by: Jon Kohler <jon@...anix.com>

---
 arch/x86/include/asm/vmx.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 8707361b24da..d7ab0ad63be6 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -537,6 +537,7 @@ enum vmcs_field {
 #define VMX_EPT_IPAT_BIT    			(1ull << 6)
 #define VMX_EPT_ACCESS_BIT			(1ull << 8)
 #define VMX_EPT_DIRTY_BIT			(1ull << 9)
+#define VMX_EPT_USER_EXECUTABLE_MASK		(1ull << 10)
 #define VMX_EPT_SUPPRESS_VE_BIT			(1ull << 63)
 #define VMX_EPT_RWX_MASK                        (VMX_EPT_READABLE_MASK |       \
 						 VMX_EPT_WRITABLE_MASK |       \
-- 
2.43.0