Re: [Xen-devel] [PATCH for-4.13] x86/crash: force unlock console before printing on kexec crash

[Jürgen Groß <jgross@xxxxxxxx>]

On 02.10.19 12:25, Jan Beulich wrote:
> On 01.10.2019 21:15, Igor Druzhinin wrote:
> > There is a small window where shootdown NMI might come to a CPU
> > (e.g. in serial interrupt handler) where console lock is taken. In order
> > not to leave following console prints waiting infinitely for shot down
> > CPUs to free the lock - force unlock the console.
> >
> > The race has been frequently observed while crashing nested Xen in
> > an HVM domain.
> >
> > Signed-off-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
> This should have been Cc-ed to Jürgen (now done), for him to release-ack
> it.
Already done via IRC


Juergen

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