Messages in this thread | | | Date | Fri, 18 Mar 2016 14:32:36 +0100 | From | Peter Zijlstra <> | Subject | Re: 4.5.0+ panic when setup loop device |
| |
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.
| |