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From: Wei Liu <wei.liu2@citrix.com>
To: Euan Harris <euan.harris@citrix.com>
Cc: kevin.tian@intel.com, Wei Liu <wei.liu2@citrix.com>,
	jun.nakajima@intel.com, andrew.cooper3@citrix.com,
	jbeulich@suse.com, xen-devel@lists.xenproject.org
Subject: Re: [PATCH] nested vmx: Intercept guest rdmsr for MSR_IA32_VMX_VMFUNC
Date: Wed, 8 Jun 2016 12:54:20 +0100	[thread overview]
Message-ID: <20160608115420.GJ5714@citrix.com> (raw)
In-Reply-To: <1465294718-31626-1-git-send-email-euan.harris@citrix.com>

On Tue, Jun 07, 2016 at 10:18:38AM +0000, Euan Harris wrote:
> 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>

For 4.7:

Release-acked-by: Wei Liu <wei.liu2@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
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

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      parent reply	other threads:[~2016-06-08 11:54 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-07 10:18 Euan Harris
2016-06-07 10:35 ` 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 [this message]

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