From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [PATCH v16 08/10] x86: add CMT related MSRs in
 allowed list
Date: Thu, 25 Sep 2014 16:58:30 -0400
Message-ID: <20140925205830.GD25262@laptop.dumpdata.com>
References: <1411640350-26155-1-git-send-email-chao.p.peng@linux.intel.com>
	<1411640350-26155-9-git-send-email-chao.p.peng@linux.intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
Content-Disposition: inline
In-Reply-To: <1411640350-26155-9-git-send-email-chao.p.peng@linux.intel.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Chao Peng <chao.p.peng@linux.intel.com>
Cc: keir@xen.org, Ian.Campbell@citrix.com, stefano.stabellini@eu.citrix.com, George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com, Ian.Jackson@eu.citrix.com, xen-devel@lists.xen.org, JBeulich@suse.com, dgdegra@tycho.nsa.gov
List-Id: xen-devel@lists.xenproject.org

On Thu, Sep 25, 2014 at 06:19:08PM +0800, Chao Peng wrote:
> Tool stack will try to access the two MSRs to perform CMT
> related operations, thus added them in the allowed list.
> 
> Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
> Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
> ---
>  xen/arch/x86/platform_hypercall.c |    7 +++++++
>  xen/include/asm-x86/msr-index.h   |    2 ++
>  2 files changed, 9 insertions(+)
> 
> diff --git a/xen/arch/x86/platform_hypercall.c b/xen/arch/x86/platform_hypercall.c
> index 081d9f5..be06f3a 100644
> --- a/xen/arch/x86/platform_hypercall.c
> +++ b/xen/arch/x86/platform_hypercall.c
> @@ -69,6 +69,13 @@ struct xen_resource_access {
>  
>  static bool_t allow_access_msr(unsigned int msr)
>  {
> +    switch ( msr )
> +    {
> +    case MSR_IA32_QOSEVTSEL:
> +    case MSR_IA32_QMC:
> +        return 1;
> +    }
> +
>      return 0;
>  }
>  
> diff --git a/xen/include/asm-x86/msr-index.h b/xen/include/asm-x86/msr-index.h
> index dcb2b87..ae089fb 100644
> --- a/xen/include/asm-x86/msr-index.h
> +++ b/xen/include/asm-x86/msr-index.h
> @@ -324,6 +324,8 @@
>  #define MSR_IA32_ENERGY_PERF_BIAS	0x000001b0
>  
>  /* Platform Shared Resource MSRs */
> +#define MSR_IA32_QOSEVTSEL		0x00000c8d
> +#define MSR_IA32_QMC			0x00000c8e

Could you mention where they are in the SDM ?

Thank you.
>  #define MSR_IA32_PQR_ASSOC		0x00000c8f
>  
>  /* Intel Model 6 */
> -- 
> 1.7.9.5
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel