From c62c7bd4f95b8f2a28098c4139a369670998aef2 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Mon, 8 Nov 2021 20:44:03 +0800 Subject: [PATCH] KVM: VMX: Update vmcs.GUEST_CR3 only when the guest CR3 is dirty When vcpu->arch.cr3 is changed, it is marked dirty, so vmcs.GUEST_CR3 can be updated only when kvm_register_is_dirty(vcpu, VCPU_EXREG_CR3). Signed-off-by: Lai Jiangshan Message-Id: <20211108124407.12187-12-jiangshanlai@gmail.com> Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx/vmx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 77d79a3aa35a..ffe45435b77e 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -3114,9 +3114,9 @@ static void vmx_load_mmu_pgd(struct kvm_vcpu *vcpu, hpa_t root_hpa, if (!enable_unrestricted_guest && !is_paging(vcpu)) guest_cr3 = to_kvm_vmx(kvm)->ept_identity_map_addr; - else if (test_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail)) + else if (kvm_register_is_dirty(vcpu, VCPU_EXREG_CR3)) guest_cr3 = vcpu->arch.cr3; - else /* vmcs01.GUEST_CR3 is already up-to-date. */ + else /* vmcs.GUEST_CR3 is already up-to-date. */ update_guest_cr3 = false; vmx_ept_load_pdptrs(vcpu); } else { -- 2.11.0