Messages in this thread | | | Date | Tue, 26 Aug 2008 12:09:46 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c - bisected |
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On Tue, 26 Aug 2008, Mike Travis wrote: > > The need to allow distros to set NR_CPUS=4096 (and NODES_SHIFT=9) is > critical to our upcoming SGI systems using what we have been calling > "UV".
That's fine. You can do it. The default kernel will not, because it's clearly not safe.
I really don't care what you do to _your_ images. But I will not distribute a known-broken kernel, and I will not debug random stack overflows that happen in it.
If you want the default kernel to support 4k cores, we'll need to fix the stack usage. I don't think that is impossible, but IT IS NOT GOING TO HAPPEN for 2.6.27.
And quite frankly, if some vendor like RedHat enables NR_CPUS=4096 by default, they are totally and utterly crazy.
But some SGI-specific binary that is meant for SGI machines only, and has been extensively tested with the setup used on SGI machines is a different thing.
Linus
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