From: "H. Peter Anvin" <hpa@zytor.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>,
"sct@redhat.com" <sct@redhat.com>
Subject: Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr
Date: Tue, 28 Sep 2010 10:56:12 -0700 [thread overview]
Message-ID: <4CA22C3C.3020209@zytor.com> (raw)
In-Reply-To: <4CA2223B.9040400@goop.org>
On 09/28/2010 10:13 AM, Jeremy Fitzhardinge wrote:
>
> Yes, we could just mask out the MTRR CPU feature and rely entirely on PAT.
>
> The alternative would be to use the wrmsr hooks to emulate the Intel
> MTRR registers by mapping them to hypercalls, but that seems needlessly
> complex.
>
Indeed. Relying on pure PAT is the Right Thing[TM].
-hpa
next prev parent reply other threads:[~2010-09-28 17:56 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-28 12:16 [PATCH 00/12] xen: initial domain support Stefano Stabellini
2010-09-28 12:16 ` [PATCH 01/12] xen: remap GSIs as pirqs when running as initial domain stefano.stabellini
2010-09-28 12:16 ` [PATCH 02/12] xen: remap MSIs into " stefano.stabellini
2010-09-28 12:16 ` [PATCH 03/12] xen: map a dummy page for local apic and ioapic in xen_set_fixmap stefano.stabellini
2010-09-28 12:16 ` [PATCH 04/12] xen: use vcpu_ops to setup cpu masks stefano.stabellini
2010-09-28 12:16 ` [PATCH 05/12] xen: Initialize xenbus for dom0 stefano.stabellini
2010-09-28 12:16 ` [PATCH 06/12] xen: add the direct mapping area for ISA bus access stefano.stabellini
2010-09-28 12:16 ` [PATCH 07/12] xen: introduce XEN_DOM0 as a silent option stefano.stabellini
2010-09-28 12:16 ` [PATCH 08/12] xen: use host E820 map for dom0 stefano.stabellini
2010-09-28 12:16 ` [PATCH 09/12] xen: make hvc_xen console work " stefano.stabellini
2010-09-28 12:16 ` [PATCH 10/12] xen: add support for the platform_ops hypercall stefano.stabellini
2010-09-28 12:16 ` [PATCH 11/12] x86/mtrr: Extend mtrr_if to include num_var_ranges stefano.stabellini
2010-09-28 12:16 ` [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr stefano.stabellini
2010-09-28 12:39 ` Ingo Molnar
2010-09-28 14:00 ` Stefano Stabellini
2010-09-28 17:13 ` Jeremy Fitzhardinge
2010-09-28 17:19 ` Stefano Stabellini
2010-09-28 17:56 ` H. Peter Anvin [this message]
2010-09-28 18:13 ` Jeremy Fitzhardinge
2010-09-28 18:19 ` H. Peter Anvin
2010-09-28 18:24 ` Jeremy Fitzhardinge
2010-09-28 18:46 ` H. Peter Anvin
2010-09-28 18:58 ` Jeremy Fitzhardinge
2010-09-28 19:05 ` H. Peter Anvin
2010-09-28 17:14 ` Jeremy Fitzhardinge
-- strict thread matches above, loose matches on Subject: below --
2010-09-28 13:19 Sander Eikelenboom
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