| Date | Tue, 15 Jul 2014 13:10:04 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [RFC PATCH 0/11] Support Write-Through mapping on x86 |
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On 07/15/2014 12:53 PM, Andy Lutomirski wrote: > > Note that MTRRs are already partially deprecated: all drivers *should* > be using arch_phys_wc_add, not mtrr_add, and arch_phys_wc_add is a > no-op on systems with working PAT. > > Unfortunately, I never finished excising mtrr_add. Finishing the job > wouldn't be very hard. >
The use of MTRRs in drivers is separate from the MTRR global setup done by the firmware, though.
-hpa
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