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SubjectRe: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86
On Fri, 21 Mar 2008, David Miller wrote:

> The thing to do is to first validate the way that IA64
> handles recursive TLB misses occuring during an initial
> TLB miss, and if there are any limitations therein.

I am familiar with that area and I am resonably sure that this
is an issue on IA64 under some conditions (the processor decides to spill
some registers either onto the stack or into the register backing store
during tlb processing). Recursion (in the kernel context) still expects
the stack and register backing store to be available. ccing linux-ia64 for
any thoughts to the contrary.

The move to 64k page size on IA64 is another way that this issue can be
addressed though. So I think its best to drop the IA64 portion.


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