Re: [PATCH 0/2] xen: fix two issues in Xen pv qspinlock handling

[Juergen Gross]

Correcting Waiman's mail address

On 01/10/2018 09:16, Juergen Gross wrote:
> The Xen specific queue spinlock wait function has two issues which
> could result in a hanging system.
> 
> They have a similar root cause of clearing a pending wakeup of a
> waiting vcpu and later going to sleep waiting for the just cleared
> wakeup event, which of course won't ever happen.
> 
> Juergen Gross (2):
>   xen: fix race in xen_qlock_wait()
>   xen: make xen_qlock_wait() nestable
> 
>  arch/x86/xen/spinlock.c | 33 ++++++++++++---------------------
>  1 file changed, 12 insertions(+), 21 deletions(-)
> 
> Cc: longman@xxxxxxxxxx
> Cc: peterz@xxxxxxxxxxxxx
>