From: Jan Beulich <jbeulich@suse.com>
Date: Fri, 17 Mar 2017 08:30:41 +0000 (+0100)
Subject: Revert "x86/vvmx: add a shadow vmcs check to vmlaunch"
X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~2472
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=99df591e3ad0a283bc7051f9efc4f9d7244d7979;p=xen.git

Revert "x86/vvmx: add a shadow vmcs check to vmlaunch"

This reverts commit b22ee98c4ecc4e7c827451dee01181529df4d26c,
causing a regression.
---

diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
index 173ec7455e..3017849177 100644
--- a/xen/arch/x86/hvm/vmx/vvmx.c
+++ b/xen/arch/x86/hvm/vmx/vvmx.c
@@ -1630,13 +1630,6 @@ int nvmx_handle_vmlaunch(struct cpu_user_regs *regs)
         return X86EMUL_OKAY;
     }
 
-    /* Check that guest is not using a shadow vmcs for vmentry */
-    if ( nvmx->shadow_vmcs )
-    {
-        vmfail_invalid(regs);
-        return X86EMUL_OKAY;
-    }
-
     __vmread(GUEST_INTERRUPTIBILITY_INFO, &intr_shadow);
     if ( intr_shadow & VMX_INTR_SHADOW_MOV_SS )
     {