| Subject | Re: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86 | From | Andi Kleen <> | Date | 21 Mar 2008 23:30:54 +0100 |
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Christoph Lameter <clameter@sgi.com> writes:
> This allows fallback for order 1 stack allocations. In the fallback > scenario the stacks will be virtually mapped.
The traditional reason this was discouraged (people seem to reinvent variants of this patch all the time) was that there used to be drivers that did __pa() (or equivalent) on stack addresses and that doesn't work with vmalloc pages.
I don't know if such drivers still exist, but such a change is certainly not a no-brainer
-Andi
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