From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yang Zhang Subject: [PATCH 1/2] Nested VMX: update nested paging mode on vmexit Date: Wed, 12 Feb 2014 10:08:55 +0800 Message-ID: <1392170936-31362-1-git-send-email-yang.z.zhang@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: Yang Zhang , chegger@amazon.de, eddie.dong@intel.com, xiantao.zhang@intel.com, JBeulich@suse.com List-Id: xen-devel@lists.xenproject.org From: Yang Zhang Since SVM and VMX use different mechanism to emulate the virtual-vmentry and virtual-vmexit, it's hard to update the nested paging mode correctly in common code. So we need to update the nested paging mode in their respective code path. SVM already updates the nested paging mode on vmexit. This patch adds the same logic in VMX side. Previous discussion is here: http://lists.xen.org/archives/html/xen-devel/2013-12/msg01759.html Signed-off-by: Yang Zhang --- xen/arch/x86/hvm/vmx/vmx.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index f6409d6..baf3040 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -2541,6 +2541,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) vcpu_nestedhvm(v).nv_vmswitch_in_progress = 0; if ( nestedhvm_vcpu_in_guestmode(v) ) { + paging_update_nestedmode(v); if ( nvmx_n2_vmexit_handler(regs, exit_reason) ) goto out; } -- 1.7.1