linux-kernel - Re: [PATCH 1/7] drm/i915: Replace kmap() with kmap_local

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Date:   Mon, 13 Dec 2021 08:02:23 -0800
From:   Ira Weiny <ira.weiny@...el.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 1/7] drm/i915: Replace kmap() with kmap_local_page()

On Mon, Dec 13, 2021 at 01:04:07AM -0800, Christoph Hellwig wrote:
> On Fri, Dec 10, 2021 at 03:23:58PM -0800, ira.weiny@...el.com wrote:
> > -		vaddr = kmap(page);
> > +		vaddr = kmap_local_page(page);
> >  		memcpy(vaddr, data, len);
> > -		kunmap(page);
> > +		kunmap_local(vaddr);
> 
> memcpy_to_page?

Opps!  Yea!

David, Daniel,

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Ira