Re: [PATCH v3] fusion: remove dead MTRR code

From: Luis R. Rodriguez
Date: Wed Apr 29 2015 - 15:51:10 EST

On Tue, Apr 21, 2015 at 1:46 PM, Luis R. Rodriguez
<mcgrof@xxxxxxxxxxxxxxxx> wrote:
> From: "Luis R. Rodriguez" <mcgrof@xxxxxxxx>
> If and when this gets enabled the driver could should split
> up IO memory space properly and that is quite a bit of work.
> Just remove the uncommented dead MTRR code then.
> There are a few motivations for this:
> a) Take advantage of PAT when available
> b) Help bury MTRR code away, MTRR is architecture specific and on
> x86 its replaced by PAT
> c) Help with the goal of eventually using _PAGE_CACHE_UC over
> _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (see commit
> de33c442e titled "x86 PAT: fix performance drop for glx,
> use UC minus for ioremap(), ioremap_nocache() and
> pci_mmap_page_range()")

Hey folks, who's tree should this go through if agreeable?

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