MTRR setting failure
ajax at nwnk.net
Mon Mar 21 06:57:05 PST 2005
On Monday 21 March 2005 06:27, Peter Karlsson wrote:
> On Mon, 21 Mar 2005, Mike A. Harris wrote:
> > What is really needed, is for the Linux kernel (and other OS kernels) to
> > aquire PAT support, as the hardware feature has existed since the Pentium
> > Pro and later, and all Athlon CPUs. Not sure about AMD K6/K5 or other
> > brands/models. The X server should then try to use the interfaces the
> > kernel would provide to set cacheability on page level granularity, and
> > only try to use MTRRs if the system does not support PAT.
> Do you mean intel's 'Performance Acceleration Technology' (a.k.a. PAT)?
No, Page Attribute Table:
Think MTRRs but with per-page granularity, rather than having a max of six-ish
ranges for the whole system.
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