On Tue, Apr 2, 2019 at 4:38 AM Heiko Stuebner <[email protected]> wrote: > > From: Vicente Bergas <[email protected]> > > As explained by Robin Murphy: > > the IOMMU shutdown disables paging, so if the VOP is still > > scanning out then that will result in whatever IOVAs it was using now going > > straight out onto the bus as physical addresses. > > We had a more radical approach before in commit > 7f3ef5dedb14 ("drm/rockchip: Allow driver to be shutdown on reboot/kexec") > but that resulted in new warnings and oopses on shutdown on rk3399 > chromeos devices. > > So second try is resurrecting Vicentes shutdown change which should > achieve the same result but in a less drastic way.
Works without complaints on RK3399 Scarlet devices: Tested-by: Brian Norris <[email protected]> Can't vouch for kexec. _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
