Messages in this thread | | | Date | Thu, 23 Dec 2004 12:57:13 -0800 | From | Matt Mackall <> | Subject | Re: Prezeroing V2 [0/3]: Why and When it works |
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On Thu, Dec 23, 2004 at 11:29:10AM -0800, Christoph Lameter wrote: > 2. Hardware support for offloading zeroing from the cpu. This avoids > the invalidation of the cpu caches by extensive zeroing operations.
I'm wondering if it would be possible to use typical video cards for hardware zeroing. We could set aside a page's worth of zeros in video memory and then use the card's DMA engines to clear pages on the host.
This could be done in fbdev drivers, which would register a zeroer with the core.
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