Messages in this thread | | | From | "Pedro M. Rodrigues" <> | Date | Fri, 12 Apr 2002 12:56:05 +0200 | Subject | Re: Using video memory as system memory |
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How fast can one drive a pci card video memory? I once came up with the idea to use the video memory of a pci video card as a block device and use it to put the journal from ext3. Of course it wouldn't be solid state like the cards in the market, at least without a battery and some circuitry changes, and i dismissed the idea as the result of too much caffeine in my blood.
/Pedro
On 11 Apr 2002 at 16:23, Pavel Machek wrote:
> Hi! > > > Does the kernel support noncontiguous main memory like this, or is > > it just plain impossible to use PCI-mapped memory as main memory? > > It might be possible (don't know why it does not work for you), but > bear in mind that PCI is *very* slow compared to your main memory. > > [Oh, you might want to add that memory late in boot phase. At begining > of kernel boot, that area is probably not mapped, yet. PCI is > initialized later.] > Pavel > --
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