1 Oct
2018
1 Oct
'18
8:58 a.m.
On 01/10/2018 10:54, Jan Beulich wrote:
On 01.10.18 at 09:16, jgross@suse.com wrote:
In the following situation a vcpu waiting for a lock might not be woken up from xen_poll_irq():
CPU 1: CPU 2: CPU 3: takes a spinlock tries to get lock -> xen_qlock_wait() -> xen_clear_irq_pending()
Doesn't the last line above ...
frees the lock -> xen_qlock_kick(cpu2)
... need to be below here?
You are right, of course!
Thanks for noticing.
Juergen