Re: [Xen-devel] [PATCH 2/2] x86: fix RCU locking in PHYSDEVOP_get_free_pirq

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 05.09.12 at 14:33, Keir Fraser <keir.xen@xxxxxxxxx> wrote:
> On 05/09/2012 13:25, "Jan Beulich" <JBeulich@xxxxxxxx> wrote:
> 
>> Apart from properly pairing locks with unlocks, also reduce the lock
>> scope - no need to do the copy_{from,to}_guest()-s inside the protected
>> region.
>> 
>> I actually wonder whether the RCU locks are needed here at all.
> 
> If it's a path that only acts on current domain, then no.

So for what case does rcu_lock_current_domain() then exist at all?

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel