On Tue, Feb 20, 2018 at 08:25:04PM +0000, Marc Zyngier wrote: > Trying to do a kexec whilst the iommus are still on is proving to be > a challenging exercise. It is terribly unsafe, as we're reusing the > memory allocated for the page tables, leading to a likely crash. > > Let's implement a shutdown method that will at least try to stop > DMA from going crazy behind our back. Note that we need to be > extra cautious when doing so, as the IOMMU may not be clocked > if controlled by a another master, as typical on Rockchip system. > > Suggested-by: Robin Murphy <robin.murphy at arm.com> > Signed-off-by: Marc Zyngier <marc.zyngier at arm.com> Applied, thanks.
