KVM: VMX: remove CR0.WP from ..._ALWAYS_ON_UNRESTRICTED_GUEST (1706bd0c) · Commits · 戴 / test

Unrestricted guest can only be enabled when EPT is enabled, and when EPT is enabled, ept_update_paging_mode_cr0() will clear hardware CR0.WP based on the guest's CR0.WP, i.e. CR0.WP always follows the guest's value when unrestricted guest is enabled. Signed-off-by:

Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:

Radim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/vmx.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -131,9 +131,10 @@ module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO);
		#endif

		#define KVM_GUEST_CR0_MASK (X86_CR0_NW \| X86_CR0_CD)
		#define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST (X86_CR0_WP \| X86_CR0_NE)
		#define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST X86_CR0_NE
		#define KVM_VM_CR0_ALWAYS_ON \
		(KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST \| X86_CR0_PG \| X86_CR0_PE)
		(KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST \| \
		X86_CR0_WP \| X86_CR0_PG \| X86_CR0_PE)
		#define KVM_CR4_GUEST_OWNED_BITS \
		(X86_CR4_PVI \| X86_CR4_DE \| X86_CR4_PCE \| X86_CR4_OSFXSR \
		\| X86_CR4_OSXMMEXCPT \| X86_CR4_LA57 \| X86_CR4_TSD)

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