[Xen-changelog] [xen stable-4.3] Nested VMX: update nested paging mode on vmexit

[patchbot@xxxxxxx]

commit c0656fa71bb42956cf43587fa39bbfb9eb4f3478
Author:     Yang Zhang <yang.z.zhang@xxxxxxxxx>
AuthorDate: Fri Mar 14 17:35:31 2014 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Mar 14 17:35:31 2014 +0100

    Nested VMX: update nested paging mode on vmexit
    
    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 <yang.z.zhang@xxxxxxxxx>
    Reviewed-by: Christoph Egger <chegger@xxxxxxxxx>
    master commit: fd1864f48d8914fb8eeb6841cd08c2c09b368909
    master date: 2014-02-24 12:09:52 +0100
---
 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 9346a54..fa211d1 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -2489,6 +2489,7 @@ 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;
     }
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.3

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