linux-kernel - Re: [PATCH v4 05/11] VAS: Define helpers for access MMIO regions

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Message-ID: <1493075940.25766.244.camel@kernel.crashing.org>
Date:   Tue, 25 Apr 2017 09:19:00 +1000
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:     Michael Ellerman <mpe@...erman.id.au>, michael.neuling@....ibm.com,
        stewart@...ux.vnet.ibm.com, apopple@....ibm.com, hbabu@...ibm.com,
        oohall@...il.com, bsingharora@...il.com, linuxppc-dev@...abs.org,
        linux-kernel@...r.kernel.org, aneesh.kumar@...ux.vnet.ibm.com
Subject: Re: [PATCH v4 05/11] VAS: Define helpers for access MMIO regions

On Mon, 2017-04-24 at 10:25 -0700, Sukadev Bhattiprolu wrote:
> which maybe due to this :-) Should I change to pgprot_noncached() for
> the MMIO writes?

Just use normal ioremap().

> > requires being mapped cachable. Ask Aneesh for a cleaner way of
> > doing it too while at it.