Messages in this thread | | | From | "Luis R. Rodriguez" <> | Date | Wed, 22 Apr 2015 12:14:04 -0700 | Subject | Re: ioremap_uc() followed by set_memory_wc() - burrying MTRR |
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On Wed, Apr 22, 2015 at 12:10 PM, Doug Ledford <dledford@redhat.com> wrote: > On Wed, 2015-04-22 at 21:05 +0200, Luis R. Rodriguez wrote: > >> > > I'd also love to remove the driver if it turns out there are actually >> > > no users. qib substantially replaces it except for a few very old >> > > cards. >> > >> > To be precise, the split is that ipath powers the old HTX bus cards that >> > only work in AMD systems, >> >> Do those systems have PAT support? CAn anyone check if PAT is enabled >> if booted on a recent kernel? > > I don't have one of these systems any more. The *only* one I ever had > was a monster IBM box...I can't even find a reference to it any more.
Um, yeah if its so rare then I think the compromise proposed might make sense, specially since folks were even *considering* seriously removing this device driver. I'll send some patches to propose the strategy explained to require booting with pat disabled.
Luis
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