From: Euan Harris <euan.harris@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: andrew.cooper3@citrix.com, kevin.tian@intel.com,
Euan Harris <euan.harris@citrix.com>,
jun.nakajima@intel.com, jbeulich@suse.com
Subject: [PATCH] nested vmx: Intercept guest rdmsr for MSR_IA32_VMX_VMFUNC
Date: Tue, 7 Jun 2016 10:18:38 +0000 [thread overview]
Message-ID: <1465294718-31626-1-git-send-email-euan.harris@citrix.com> (raw)
Guest reads of MSR_IA32_VMX_VMFUNC should be handled by
the logic in vmx_msr_read_intercept(). Otherwise a guest
can read the raw host value of this MSR, even if nested
vmx is disabled.
Signed-off-by: Euan Harris <euan.harris@citrix.com>
---
xen/arch/x86/hvm/vmx/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index 743b5a1..6c0721f 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -2624,7 +2624,7 @@ static int vmx_msr_read_intercept(unsigned int msr, uint64_t *msr_content)
__vmread(GUEST_IA32_DEBUGCTL, msr_content);
break;
case IA32_FEATURE_CONTROL_MSR:
- case MSR_IA32_VMX_BASIC...MSR_IA32_VMX_TRUE_ENTRY_CTLS:
+ case MSR_IA32_VMX_BASIC...MSR_IA32_VMX_VMFUNC:
if ( !nvmx_msr_read_intercept(msr, msr_content) )
goto gp_fault;
break;
--
1.7.10.4
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next reply other threads:[~2016-06-07 10:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-07 10:18 Euan Harris [this message]
2016-06-07 10:35 ` [PATCH] nested vmx: Intercept guest rdmsr for MSR_IA32_VMX_VMFUNC Jan Beulich
2016-06-07 10:53 ` Euan Harris
2016-06-07 11:39 ` Andrew Cooper
2016-06-08 6:09 ` Tian, Kevin
2016-06-08 11:54 ` Wei Liu
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