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Re: [Xen-devel] [PATCH 0/3] x86: fixes/improvements for scratch cpumask

On 12/02/2020 18:01, Roger Pau Monné wrote:
> On Wed, Feb 12, 2020 at 05:53:39PM +0100, Sander Eikelenboom wrote:
>> On 12/02/2020 17:49, Roger Pau Monne wrote:
>>> Hello,
>>> Commit:
>>> 5500d265a2a8fa63d60c08beb549de8ec82ff7a5
>>> x86/smp: use APIC ALLBUT destination shorthand when possible
>>> Introduced a bogus usage of the scratch cpumask: it was used in a
>>> function that could be called from interrupt context, and hence using
>>> the scratch cpumask there is not safe. Patch #2 is a fix for that usage.
>>> Patch #3 adds some debug infrastructure to make sure the scratch cpumask
>>> is used in the right context, and hence should prevent further missuses.
>>> Thanks, Roger.
>> Hi Roger,
>> Do you still want me to test the "panic" patch ?
>> Or test this series instead ?
> I've been able to trigger this myself, so if you can give a try to the
> series in order to assert it fixes your issue that would be great.
> Thanks.

Sure, compiling now, will report back tomorrow morning.

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