Re: [Xen-devel] [RFT] x86/pvh: disable all MTRR CPU features on cpuid for dom0

2015-03-27 Thread Luis R. Rodriguez
On Fri, Mar 27, 2015 at 09:32:10AM +0100, Roger Pau Monné wrote: > El 27/03/15 a les 0.33, Luis R. Rodriguez ha escrit: > > From: "Luis R. Rodriguez" > > > > Commit 586ab6a by Roger disabled the main MTRR CPU feature > > on the cpuid when on pvh in order to avoid having MTRR code > > run on the O

Re: [Xen-devel] [RFT] x86/pvh: disable all MTRR CPU features on cpuid for dom0

2015-03-27 Thread Jan Beulich
>>> On 27.03.15 at 10:37, wrote: > On 26/03/15 23:33, Luis R. Rodriguez wrote: >> From: "Luis R. Rodriguez" >> >> Commit 586ab6a by Roger disabled the main MTRR CPU feature >> on the cpuid when on pvh in order to avoid having MTRR code >> run on the OS on dom0. This missed the fact that not all C

Re: [Xen-devel] [RFT] x86/pvh: disable all MTRR CPU features on cpuid for dom0

2015-03-27 Thread Andrew Cooper
On 26/03/15 23:33, Luis R. Rodriguez wrote: From: "Luis R. Rodriguez" Commit 586ab6a by Roger disabled the main MTRR CPU feature on the cpuid when on pvh in order to avoid having MTRR code run on the OS on dom0. This missed the fact that not all CPUs use this cpuid to identify MTRR support, thi

Re: [Xen-devel] [RFT] x86/pvh: disable all MTRR CPU features on cpuid for dom0

2015-03-27 Thread Roger Pau Monné
El 27/03/15 a les 0.33, Luis R. Rodriguez ha escrit: > From: "Luis R. Rodriguez" > > Commit 586ab6a by Roger disabled the main MTRR CPU feature > on the cpuid when on pvh in order to avoid having MTRR code > run on the OS on dom0. This missed the fact that not all CPUs > use this cpuid to identif

[Xen-devel] [RFT] x86/pvh: disable all MTRR CPU features on cpuid for dom0

2015-03-26 Thread Luis R. Rodriguez
From: "Luis R. Rodriguez" Commit 586ab6a by Roger disabled the main MTRR CPU feature on the cpuid when on pvh in order to avoid having MTRR code run on the OS on dom0. This missed the fact that not all CPUs use this cpuid to identify MTRR support, this complets that. This could in theory fix som