[openib-general] [PATCH 02/17] ehca: module infrastructure

[Grant Grundler]

On Fri, Mar 03, 2006 at 07:57:24AM -0800, Roland Dreier wrote:
>     Heiko> Hello Christoph, I only did kmalloc(PAGE_SIZE, GFP_KERNEL)
>     Heiko> because we need some amount of memory which is 4k
>     Heiko> aligned. I'm not sure, but I think if I use kmalloc(SIZE,
>     Heiko> GFP_KERNEL) and SIZE is smaller as 4k the memory will not
>     Heiko> be 4k aligned?
> 
> If you need something 4K aligned then you should be using 4096 instead
> of PAGE_SIZE -- it's entirely possible to build a ppc64 kernel with
> PAGE_SIZE == 65536.

IA64 .config options allows 4k, 8K, 16K, 64K.
Default page size is 16k.
SLES9 versions for SGI/Altix use 64K as the default.

hth,
grant