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xen-devel
[Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr
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To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr |
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From: |
"H. Peter Anvin" <hpa@xxxxxxxxx> |
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Date: |
Tue, 28 Sep 2010 10:56:12 -0700 |
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Cc: |
"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, "sct@xxxxxxxxxx" <sct@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <Jeremy.Fitzhardinge@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx> |
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Tue, 28 Sep 2010 10:59:59 -0700 |
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<4CA2223B.9040400@xxxxxxxx> |
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<alpine.DEB.2.00.1009281217540.2864@kaball-desktop> <1285676218-26218-12-git-send-email-stefano.stabellini@xxxxxxxxxxxxx> <20100928123925.GA18208@xxxxxxx> <alpine.DEB.2.00.1009281455300.2864@kaball-desktop> <4CA2223B.9040400@xxxxxxxx> |
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Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100907 Fedora/3.1.3-1.fc13 Thunderbird/3.1.3 |
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
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- [Xen-devel] [PATCH 08/12] xen: use host E820 map for dom0, (continued)
- [Xen-devel] [PATCH 08/12] xen: use host E820 map for dom0, stefano . stabellini
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- [Xen-devel] [PATCH 11/12] x86/mtrr: Extend mtrr_if to include num_var_ranges, stefano . stabellini
- [Xen-devel] [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, stefano . stabellini
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Ingo Molnar
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Stefano Stabellini
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Jeremy Fitzhardinge
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Stefano Stabellini
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr,
H. Peter Anvin <=
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Jeremy Fitzhardinge
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, H. Peter Anvin
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Jeremy Fitzhardinge
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, H. Peter Anvin
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Jeremy Fitzhardinge
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, H. Peter Anvin
- [Xen-devel] Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr, Jeremy Fitzhardinge
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