Messages in this thread | | | Date | Sun, 26 Oct 2008 17:38:23 -0700 | From | "H. Peter Anvin" <> | Subject | Re: PAT and MTRRs |
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Arjan van de Ven wrote: >>> >> Now, if it wasn't for the braindamage called ACPI and SMM, we could >> have cleared the MTRR settings and just used PAT... > > yeah.. one thing we need to investigate is if we can set the default > "no mtrr coverage" value to cached > (and also.. to check we don't set that to uncached if the bios had it > set to cached..) >
Well, in the end it comes down to the same thing: SMM expects the memory map to reside in MTRRs. We can "sanitize" the memory map, but we can't throw it out the window like what we really should be able to.
-hpa
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