Messages in this thread | | | From | "Jakma, Paul" <> | Subject | RE: GFP_DMA not good enough for problem hardware | Date | Mon, 18 Oct 1999 12:19:40 +0100 |
| |
> If there isnt > that card may well simply never work on non PC. > > Alan
alpha 21174 chipset (and later ones too i guess) has quite neat hardware scatter-gather support. Eg a whole pile of reprogrammeable window's, with a TLB to cache window lookups, (last 4 or 8 lookups IIRC). So there's no reason why in the case of Alpha it can't support all the hardware i386 does. in fact it should be able to handle silly hardware better as we could easily assign a window to exactly suit 'bad' hardware.
Related: the standard reply to "howto get 4GB on intel" is usually "don't bother, get a 64-bit machine".. that's bogus - cause of the current direct PCI -> RAM address mapping Alpha actually supports *less* RAM than i386, ie 2GB.
It'd solve a lot of problems if this could be implemented. Anyone working on it? (and how much is involved?)
regards,
Paul Jakma paul@clubi.ie
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |