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Date: Tue, 19 Dec 2006 14:11:17 +0100 From: Arjan van de Ven <arjan@...radead.org> To: Thomas Hellström <thomas@...gstengraphics.com> Cc: Dave Jones <davej@...hat.com>, Dave Airlie <airlied@...ux.ie>, Linux Kernel list <linux-kernel@...r.kernel.org> Subject: Re: [patch 1/2] agpgart - allow user-populated memory types. On Tue, 2006-12-19 at 13:47 +0100, Thomas Hellström wrote: > Arjan van de Ven wrote: > > >>A short background: > >>The current code uses vmalloc only. The potential use of kmalloc was > >>introduced > >>to save memory and cpu-speed. > >>All agp drivers expect to see a single memory chunk, so I'm not sure we > >>want to have an array of pages. That may require rewriting a lot of code. > >> > >> > > > >but if it's clearly the right thing..... > >How hard can it be? there are what.. 5 or 6 AGP drivers in the kernel? > > > > > > > > > Hmm, > but we would still waste a lot of memory compared to kmalloc, surely it's at most 4Kb for the entire system? (if agp allows the non-root user to pin a lot more than that in kernel memory there is a different problem of rlimits ;) -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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