Mailing List Archive: MTRR support

MTRR support - what's needed

Oct 25, 2004, 4:42 PM

Post #1 of 3 (186 views)

Hi,

I noticed that MTRR support isn't there at all in Xen,
and that the X server on my Xen test system needs it ;)

I'm wondering if there are fundamental reasons why MTRR
support isn't enabled in Xen, and what I could do to
make it happen. Any special things that need to be
kept in mind ?

--
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan

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Re: MTRR support - what's needed [ In reply to ]

Ian.Pratt at cl

Oct 25, 2004, 5:29 PM

Post #2 of 3 (182 views)

Permalink

> I noticed that MTRR support isn't there at all in Xen,
> and that the X server on my Xen test system needs it ;)
>
> I'm wondering if there are fundamental reasons why MTRR
> support isn't enabled in Xen, and what I could do to
> make it happen. Any special things that need to be
> kept in mind ?

Have you tried just compiling it in? If it uses the rd/wrmsr
macro it may just work (assuming the domain is privileged).

If it works, we can add it to the default xen0 config.

Thanks,
Ian

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Re: MTRR support - what's needed [ In reply to ]

maw48 at hermes

Oct 25, 2004, 5:36 PM

Post #3 of 3 (179 views)

Permalink

Have you tried the "NoMTRR" option in the xorg.conf? (this is not a
proper fix)

Mark

----------------------------------

"Boing! Init 0" said Zebedee

On Mon, 25 Oct 2004, Rik van Riel wrote:

> Hi,
>
> I noticed that MTRR support isn't there at all in Xen,
> and that the X server on my Xen test system needs it ;)
>
> I'm wondering if there are fundamental reasons why MTRR
> support isn't enabled in Xen, and what I could do to
> make it happen. Any special things that need to be
> kept in mind ?
>
> --
> "Debugging is twice as hard as writing the code in the first place.
> Therefore, if you write the code as cleverly as possible, you are,
> by definition, not smart enough to debug it." - Brian W. Kernighan
>
>
>
> -------------------------------------------------------
> This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
> Use IT products in your business? Tell us what you think of them. Give us
> Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
> http://productguide.itmanagersjournal.com/guidepromo.tmpl
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/xen-devel
>

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