[PATCH 6/6] arm64: document the choice of page attributes for pgprot_dmacoherent
Will Deacon
will at kernel.org
Sat Aug 17 04:05:22 AEST 2019
On Fri, Aug 16, 2019 at 07:59:42PM +0200, Christoph Hellwig wrote:
> On Fri, Aug 16, 2019 at 06:31:18PM +0100, Will Deacon wrote:
> > Mind if I tweak the second sentence to be:
> >
> > This is different from "Device-nGnR[nE]" memory which is intended for MMIO
> > and thus forbids speculation, preserves access size, requires strict
> > alignment and can also force write responses to come from the endpoint.
> >
> > ? It's a small change, but it better fits with the arm64 terminology
> > ("strongly ordered" is no longer used in the architecture).
> >
> > If you're happy with that, I can make the change and queue this patch
> > for 5.4.
>
> I'm fine with the change, but you really need this series as base,
> as there is no pgprot_dmacoherent before the series. So I think I'll
> have to queue it up if we want it for 5.4, and I'll need a few more
> reviews for the other patches in this series first.
Ah, I didn't think about the contextual stuff. In which case, with my
change in wording:
Acked-by: Will Deacon <will at kernel.org>
and feel free to route it with the rest.
Thanks,
Will
More information about the Linuxppc-dev
mailing list