Messages in this thread | | | Date | Mon, 30 Apr 2007 10:38:19 -0700 | From | William Lee Irwin III <> | Subject | Re: [-mm patch] i386: enable 4k stacks by default |
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On Mon, Apr 30, 2007 at 02:13:16PM +0200, Andi Kleen wrote: > Actually looking at the code it would need some fixes first: > /* > * These should really be __section__(".bss.page_aligned") as well, but > * gcc's 3.0 and earlier don't handle that correctly. > */ > static char softirq_stack[NR_CPUS * THREAD_SIZE] > __attribute__((__aligned__(THREAD_SIZE))); > > static char hardirq_stack[NR_CPUS * THREAD_SIZE] > __attribute__((__aligned__(THREAD_SIZE))); > > With 8K stacks and NR_CPUS==128 that would be 2MB statically reserved. Yuck. > Really needs to be dynamically allocated. I'll take a look once the .22 > big merge is done.
Here's what I did for i386 for someone concerned about blowing the stack.
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