From mboxrd@z Thu Jan  1 00:00:00 1970
From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH v2] x86/vPMU: constrain MSR_IA32_DS_AREA
	loads
Date: Fri, 18 Dec 2015 11:59:36 -0500
Message-ID: <56743B78.70004@oracle.com>
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To: Jan Beulich <JBeulich@suse.com>, xen-devel <xen-devel@lists.xenproject.org>
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On 12/18/2015 11:51 AM, Jan Beulich wrote:
> For one, loading the MSR with a possibly non-canonical address was
> possible since the verification is conditional, while the MSR load
> wasn't. And then for PV guests we need to further limit the range of
> valid addresses to exclude the hypervisor range.
>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
> ---
> v2: Also alter the MSR write check, in anticipation of it becoming
>      accessible by PV guests eventually.

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>