On Wed, Sep 20, 2023 at 11:44:58AM +0100, Catalin Marinas wrote:
> On Tue, Sep 19, 2023 at 11:54:10AM -0700, Jan Bottorff wrote:
> > The ARM docs do have a specific example case where the device write triggers
> > an interrupt, and that example specifically says a DSB barrier is needed.
>
> Yeah, the Arm ARM is not very precise here on what the mailbox is,
> whether it's a local or shared peripheral and they went for the
> stronger DMB. Will added a good explanation on why a DMB is sufficient
^^^
DSB
(fixing typo in my reply)
--
Catalin
