On Tue, Mar 21, 2017 at 12:08:15PM +0000, Marc Zyngier wrote: > On 20/03/17 10:58, Christoffer Dall wrote: > > Now when we do an early init of the static parts of the VGIC data > > structures, we can do things like checking if the AP lists are empty > > directly without having to explicitly check if the vgic is initialized > > and reduce a bit of work in our criticial path. > > critical > > > Note: list_empty is a single atomic read (uses READ_ONCE) and can > > therefore check if a list is empty or not without the need to take the > > spinlock protecting the list. > > This note might be better placed in patch #2. Agreed. > > > > > Signed-off-by: Christoffer Dall <cdall@xxxxxxxxxx> > > Acked-by: Marc Zyngier <marc.zyngier@xxxxxxx> > Thanks, -Christoffer
