Re: Allocating non-contigious memory

From: Riley Williams (rhw@MemAlpha.CX)
Date: Wed Jun 27 2001 - 16:31:22 EST

Hi Alan.

>> 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.

Would it be useful to turn that particular code into a subroutine that
is called from each driver, or would that cause other problems?

Best wishes from Riley.

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