Re: dma restriction on Itanium 2

Grant Grundler
2004-01-19T06:14:38Z

On Sat, Jan 17, 2004 at 07:47:10PM +0100, Christian Hinkelbein wrote:
> Grant Grundler wrote:
> >Yes. HPUX has a similar interface for DMA mapping but a completely
> >different VM subsystem. Linux guarantees contiguous physical blocks
> >for multi-page memory allocations. HPUX does not. The linux DMA
> >subsystem uses that assumption.
> you are talking about kernel-mode __get_free_pages and kmalloc,
> and not user-mode malloc, arent you?

yes - kmalloc.
Sorry - I assumed it was clear this whole discussion
was about kernel internals.

grant