On 06/09/2017 10:16 AM, Konrad Rzeszutek Wilk wrote:
> If we have a large amount of livepatches and want to print them
> on the console using 'xl debug-keys x' we eventually hit
> the preemption check:
>
> if ( i && !(i % 64) )
> {
> spin_unlock(&payload_lock);
> process_pending_softirqs();
> if ( spin_trylock(&payload_lock) )
> return
>
> <facepalm> The effect is that we have just effectively
> taken the lock and returned without unlocking!
>
> CC: Ross Lagerwall <ross.lagerw...@citrix.com>
> CC: Boris Ostrovsky <boris.ostrov...@oracle.com>
> CC: Jan Beulich <jbeul...@suse.com>
> CC: Andrew Cooper <andrew.coop...@citrix.com>
> CC: Julien Grall <julien.gr...@arm.com>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Reviewed-and-tested-by: Boris Ostrovsky <boris.ostrov...@oracle.com>
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
