Re: [RFC] 4KB stack + irq stack for x86

Ulrich Weigand (Ulrich.Weigand@de.ibm.com)
Thu, 6 Jun 2002 22:55:12 +0200

David Mosberger wrote:

>Just a minor nit: for ia64 it's either 32KB (for page sizes up to
>16KB) or 64KB (for 64KB page size). The 32KB is conservative and
>based on the assumption that there can be up to 16 nested interrupts
>plus some other nested traps (such as unaligned faults). A separate
>irq stack should let us reduce the per-task stack size.

So in the case of 8K page size, you need an order-2 allocation
for the stack, right? How do you handle failures due to fragmentation?

Mit freundlichen Gruessen / Best Regards

Ulrich Weigand

--
  Dr. Ulrich Weigand
  Linux for S/390 Design & Development
  IBM Deutschland Entwicklung GmbH, Schoenaicher Str. 220, 71032 Boeblingen
  Phone: +49-7031/16-3727   ---   Email: Ulrich.Weigand@de.ibm.com




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