[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Xen-devel] [PATCH v2 2/3] x86 Test and expose CPUID faulting capabilities in /proc/cpuinfo
- To: "David Vrabel" <david.vrabel@xxxxxxxxxx>
- From: "Jan Beulich" <JBeulich@xxxxxxxx>
- Date: Thu, 15 Sep 2016 04:25:38 -0600
- Cc: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, DaveHansen <dave.hansen@xxxxxxxxxxxxxxx>, Huang Rui <ray.huang@xxxxxxx>, Kristen Carlson Accardi <kristen@xxxxxxxxxxxxxxx>, "H. PeterAnvin" <hpa@xxxxxxxxx>, Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "maintainer:X86 ARCHITECTURE 32-BIT AND 64-BIT" <x86@xxxxxxxxxx>, Robert O'Callahan <robert@xxxxxxxxxxxxx>, Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, "moderated list:XEN HYPERVISOR INTERFACE" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, Len Brown <len.brown@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Juergen Gross <JGross@xxxxxxxx>, "open list:X86 ARCHITECTURE 32-BIT AND 64-BIT" <linux-kernel@xxxxxxxxxxxxxxx>, Kyle Huey <me@xxxxxxxxxxxx>, Aravind Gopalakrishnan <aravind.gopalakrishnan@xxxxxxx>, Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>
- Delivery-date: Thu, 15 Sep 2016 10:25:48 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
>>> On 15.09.16 at 12:05, <david.vrabel@xxxxxxxxxx> wrote:
> On 14/09/16 22:01, Kyle Huey wrote:
>> Xen advertises the underlying support for CPUID faulting but not does pass
>> through writes to the relevant MSR, nor does it virtualize it, so it does
>> not actually work. For now mask off the relevant bit on MSR_PLATFORM_INFO.
>
> Could you clarify in the commit message that it is PV guests that are
> affected.
What makes you think HVM ones aren't?
Jan
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel
|
