RE: Address spaces on a i386 - Getting Confused

Stephen C. Tweedie (
Thu, 1 Apr 1999 18:12:44 +0100 (BST)


On Thu, 1 Apr 1999 09:11:55 -0500 , Eric Lowe <> said:

> How about a dmamalloc() function?

In the kernel, use GFP_DMA for dma-capable, physically contiguous memory
(only for ISA dma right now, as that is limited to 16MB; PCI can always
dma all of physical memory right now, as we don't support more than 4G
physical ram on Intel). In user space, use valloc() to get page-aligned


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