Re: [v4.6-rc1 Regression] x86/topology: Create logical package id
From: Joseph Salisbury
Date: Fri May 06 2016 - 16:51:20 EST
On 05/06/2016 04:46 PM, Boris Ostrovsky wrote:
> On 05/06/2016 03:38 PM, Joseph Salisbury wrote:
>> On 05/06/2016 03:13 PM, Boris Ostrovsky wrote:
>>> On 05/06/2016 02:48 PM, Thomas Gleixner wrote:
>>>> Yuck. That dies with a divide error. And that looks like XEN is supplying crap
>>>> data in the CPUID.
>>> Joe, do you have
>>> ed6069b xen/apic: Provide Xen-specific version of cpu_present_to_apicid
>>> APIC op
>> Yes the commit is in the 4.4 based Ubuntu kernel. This bug also happens
>> with the vanilla 4.6-rc5 kernel, which also has that commit.
> Can you post guest's cpuid -1 -r ? (I guess after you verify Thomas' patch)
Thomas' patch does resolve the bug. The cpuid info can be seen here: