On Wed, Jul 25, 2007 at 04:39:04PM +0200, Andrea Arcangeli wrote:
> For the kernel stack btw, when alloc_pages(order=1) fails vmalloc
> should be used and 4k stacks can be dropped. Nobody does dma from the
> stack anymore these days IIRC (it doesn't work in all archs anyway).
I have recent code for that circulating, albeit intended for debugging
purposes. There's nothing particularly debug-oriented about it, though,
apart from the fact a guard page is automatically set up by vmalloc()
and that the use of vmalloc() is unconditional.
As for the rest, I'm sure there could be a lively conversation, but
consensus, so I'll let it go.
-- wli
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