From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: [PATCH 25/35] KVM: VMX: move CR3/PDPTR update to vmx_set_cr3 Date: Thu, 19 Nov 2009 15:35:01 +0200 Message-ID: <1258637711-11674-26-git-send-email-avi@redhat.com> References: <1258637711-11674-1-git-send-email-avi@redhat.com> Cc: kvm@vger.kernel.org To: linux-kernel@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:52232 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753537AbZKSNfI (ORCPT ); Thu, 19 Nov 2009 08:35:08 -0500 In-Reply-To: <1258637711-11674-1-git-send-email-avi@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: From: Marcelo Tosatti GUEST_CR3 is updated via kvm_set_cr3 whenever CR3 is modified from outside guest context. Similarly pdptrs are updated via load_pdptrs. Let kvm_set_cr3 perform the update, removing it from the vcpu_run fast path. Signed-off-by: Marcelo Tosatti Acked-by: Acked-by: Sheng Yang Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c | 5 +---- arch/x86/kvm/x86.c | 4 +++- 2 files changed, 4 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index bf46253..a5f3f3e 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1737,6 +1737,7 @@ static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3) vmcs_write64(EPT_POINTER, eptp); guest_cr3 = is_paging(vcpu) ? vcpu->arch.cr3 : vcpu->kvm->arch.ept_identity_map_addr; + ept_load_pdptrs(vcpu); } vmx_flush_tlb(vcpu); @@ -3625,10 +3626,6 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); - if (enable_ept && is_paging(vcpu)) { - vmcs_writel(GUEST_CR3, vcpu->arch.cr3); - ept_load_pdptrs(vcpu); - } /* Record the guest's net vcpu time for enforced NMI injections. */ if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked)) vmx->entry_time = ktime_get(); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index dbddcc2..719f31e 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4591,8 +4591,10 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, mmu_reset_needed |= vcpu->arch.cr4 != sregs->cr4; kvm_x86_ops->set_cr4(vcpu, sregs->cr4); - if (!is_long_mode(vcpu) && is_pae(vcpu)) + if (!is_long_mode(vcpu) && is_pae(vcpu)) { load_pdptrs(vcpu, vcpu->arch.cr3); + mmu_reset_needed = 1; + } if (mmu_reset_needed) kvm_mmu_reset_context(vcpu); -- 1.6.5.2