From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aravind Gopalakrishnan Subject: Re: Fwd: [PATCH RFC 3/4] x86/AMD: support further feature masking MSRs Date: Tue, 1 Apr 2014 18:10:42 -0500 Message-ID: <533B4772.2020008@amd.com> References: <532880230200007800125450@nat28.tlf.novell.com> <53296E90020000780012593B@nat28.tlf.novell.com> <532975D6020000780012598D@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1WV7pY-0001C2-Lw for xen-devel@lists.xenproject.org; Tue, 01 Apr 2014 23:10:56 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jan Beulich , "xen-devel@lists.xenproject.org" Cc: Ian.Jackson@eu.citrix.com, Keir Fraser , ian.campbell@citrix.com, "Suthikulpanit, Suravee" , "Hurwitz, Sherry" List-Id: xen-devel@lists.xenproject.org > Newer AMD CPUs also allow masking CPUID leaf 6 ECX and CPUID leaf 7 > sub-leaf 0 EAX and EBX. > > Signed-off-by: Jan Beulich > > > TBD: > - Fam15M0x is documented to not have MSR C0011002 despite > CPUID[7,0].EBX != 0 from model 02 > onwards, and contrary to what I see on the system I have access to > (which is model 02) > - Fam12, Fam14, and Fam16 are documented to not have MSR C0011003 > despite CPUID[6].ECX != 0 Fam10 too has cpuid[6].ecx != 0 but no MSR C0011003 > - Fam11 is documented to not even have MSR C0011004 and C0011005 > I am still trying to get some clarity on this; Shall let you know soon :) -Aravind.