Re: [RFC PATCH 0/3] staging: remove fbdev drivers

From	Gerd Hoffmann <kraxel@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [RFC PATCH 0/3] staging: remove fbdev drivers
Date	2016-12-13 09:50 +0100
Message-ID	<sNQWC-7pD-7@gated-at.bofh.it> (permalink)
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  Hi,

> The acceleration that most of the 2D things provide isn't ever that
> great, and shadowing is a lot more effective if done properly.

That is probably true for anything pci-ish, because those devices are
optimized for memory writes and reads are horribly slow.  So you surely
want avoid device memory reads and shadowing is a effective way to do
this.

On arm hardware the tradeoff may look quite different, the cpus are
relatively slow and I think most arm gpus don't have dedicated device
memory ...

cheers,
  Gerd

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Re: [RFC PATCH 0/3] staging: remove fbdev drivers Gerd Hoffmann <kraxel@redhat.com> - 2016-12-13 09:50 +0100

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