Re: bigphysarea support in 2.2.19 and 2.4.0 kernels

Jeff V. Merkey
2000-12-22T19:14:00Z

On Fri, Dec 22, 2000 at 11:11:05AM -0700, Jeff V. Merkey wrote:
> On Fri, Dec 22, 2000 at 09:39:28AM +0100, Pauline Middelink wrote:
> > On Thu, 21 Dec 2000 around 15:53:39 -0700, Jeff V. Merkey wrote:
>

Pauline/Alan,

I have been studying the SCI code and I think I may have a workaround that
won't need the patch, but it will require pinning large chunks of memory
with the existing __get_free_pages() functions. I will need to make the
changes and test them. This change will require significant testing. I will
ping you guys if I have questions. If we can reach a compromise on the
bigphysarea patch, it would be great, but absent this, I will be looking
at this alternate solution.

The real question is how to guarantee that these pages will be contiguous
in memory. The slab allocator may also work, but I think there are size
constraints on how much I can get in one pass.

:-)

Jeff

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