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

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Message-ID: <YbcMhzfm31aL5fzx@infradead.org>
Date:   Mon, 13 Dec 2021 01:04:07 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     ira.weiny@...el.com
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 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?