Messages in this thread | | | Date | Sun, 17 Aug 2008 00:12:35 +0400 | From | Cyrill Gorcunov <> | Subject | Re: [PATCH 2/6] x86: apic - unify lapic_resume |
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[Arjan van de Ven - Sat, Aug 16, 2008 at 01:00:08PM -0700] | On Sat, 16 Aug 2008 20:52:07 +0100 (BST) | "Maciej W. Rozycki" <macro@linux-mips.org> wrote: | | > On Sat, 16 Aug 2008, Cyrill Gorcunov wrote: | > | > > +#ifdef CONFIG_X86_64 | > > + if (x2apic) | > > + enable_x2apic(); | > > + else | > > +#endif | > | > Hmm, x86-64 hardware can run a 32-bit kernel, so it might be a good | > idea to take the opportunity of the merge and extend x2APIC support | > to the 32-bit configuration too. It should be mostly a mechanical | > change. Just a suggestion though -- feel free to ignore if you'd | > rather not dive into it. ;) | | it's not like you can/want to go over 128 cpus on a 32 bit kernel | though.. | -- | If you want to reach me at my work email, use arjan@linux.intel.com | For development, discussion and tips for power savings, | visit http://www.lesswatts.org |
Arjan,
it seems this limit is not APIC related since iirc 82489DX allows to address 2^14 bits, x2APIC - more then 128 entities too. So I suspect it somehow cpu bitmap related. Am I wrong (I didn't _check_ the code)?
- Cyrill -
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