Re: Allocating non-contigious memory

From: Alan Cox (
Date: Wed Jun 27 2001 - 13:52:47 EST

> What is the Right Way[tm] as of 2.4.6 to allocate 16Mb as 4K pages and
> get the pci bus address for each page? Bonus points is they're
> virtually contiguous, but that's not necessary. IIRC, the old
> vmalloc-then-walk-the-pagetables trick is considered out-of-bounds
> nowadays.

If you want it virtually contiguous then copy the code from bttv that
out-of-bounds or otherwise is now found in about 8 drivers in the kernel.

If you don't need that then you can map user space and use kiovecs - which
is nicer for many things

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This archive was generated by hypermail 2b29 : Sat Jun 30 2001 - 21:00:17 EST