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Groups > linux.kernel > #1360633
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: 4.5.0+ panic when setup loop device |
| Date | 2016-03-18 14:40 +0100 |
| Message-ID | <re2Ne-6re-33@gated-at.bofh.it> (permalink) |
| References | (2 earlier) <rdvod-yw-1@gated-at.bofh.it> <rdCSL-5Ht-39@gated-at.bofh.it> <rdU3g-vw-5@gated-at.bofh.it> <rdZFE-4dR-11@gated-at.bofh.it> <re1R7-5Nn-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Mar 18, 2016 at 01:39:16PM +0100, Mike Galbraith wrote: > On Fri, 2016-03-18 at 11:15 +0100, Peter Zijlstra wrote: > > Ah, did you actually disable HT in the BIOS, or just skip the HT > > enumeration by saying nr_cpus=64 (knowing that all the siblings are > > last)? > > It's disabled in BIOS. OK, so I disabled HT in the BIOS too, on my IVB-EX > > In any case, Thomas has a clue and I'm going to test, but 4 socket > > machine takes forever to boot, so might be a few minutes :/ > > His one-liner made my DL980 all better. My machine is profoundly unhappy though; and since I have no nr_cpus= nr_cpu_ids == total_cpus and his patch wouldn't do anything anyway. [ 0.286838] max_cores: 15, cpu_ids: 60, num_siblings: 2, coreid_bits: 5 [ 0.293463] smpboot: Max logical packages: 2 [ 0.297733] smpboot: APIC(0) Converting physical 0 to logical package 0 [ 0.304346] smpboot: APIC(20) Converting physical 1 to logical package 1 [ 0.311047] smpboot: APIC(40) Package 2 exceeds logical package map [ 0.317309] smpboot: CPU 30 APICId 40 disabled [ 0.321757] smpboot: APIC(60) Package 3 exceeds logical package map [ 0.328022] smpboot: CPU 45 APICId 60 disabled This machine does exactly what I suspected yours did.
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Re: 4.5.0+ panic when setup loop device Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-18 05:20 +0100
Re: 4.5.0+ panic when setup loop device Peter Zijlstra <peterz@infradead.org> - 2016-03-18 09:00 +0100
Re: 4.5.0+ panic when setup loop device Peter Zijlstra <peterz@infradead.org> - 2016-03-18 11:20 +0100
Re: 4.5.0+ panic when setup loop device Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-18 13:40 +0100
Re: 4.5.0+ panic when setup loop device Peter Zijlstra <peterz@infradead.org> - 2016-03-18 14:40 +0100
Re: 4.5.0+ panic when setup loop device Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-18 15:10 +0100
Re: 4.5.0+ panic when setup loop device Thomas Gleixner <tglx@linutronix.de> - 2016-03-18 13:00 +0100
Re: 4.5.0+ panic when setup loop device Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-18 13:50 +0100
[tip:x86/urgent] x86/topology: Use total_cpus not nr_cpu_ids for logical packages tip-bot for Thomas Gleixner <tipbot@zytor.com> - 2016-03-19 10:40 +0100
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