Messages in this thread | | | Date | Tue, 30 Nov 1999 15:31:52 +0000 | From | Jeff Garzik <> | Subject | Re: AMD Athlon flags and /proc/cpuinfo |
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David Wragg wrote: > The K7 has PAT too? Excellent. Now we need PAT support in the kernel, > so we can start to forget all of the petty restrictions of the > MTRRs. With sensible PAT support, XFree86 should just be able to do > > fd = open("/dev/mem", O_RW); > mmap(..., WRITE_COMBINING, fd, ...); > > to map a linear frame buffer write combining, without any of the > annoying details that the MTRRs introduce. ioremap should accept > similar flags.
That is a very cool idea :) It would be nice to extend this idea such that the kernel tries to use MTRRs, if PAT isn't available.
-- Jeff Garzik | Just once, I wish we would encounter Building 1024 | an alien menace that wasn't immune to MandrakeSoft, Inc. | bullets. -- The Brigadier, "Dr. Who"
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