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

[patchbot@xxxxxxx]

commit fd1864f48d8914fb8eeb6841cd08c2c09b368909
Author:     Yang Zhang <yang.z.zhang@xxxxxxxxx>
AuthorDate: Mon Feb 24 12:09:52 2014 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Feb 24 12:09:52 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>
---
 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;
     }
--
generated by git-patchbot for /home/xen/git/xen.git#master

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