On Mar 19, 2013 3:01 AM, "Rob Clark" <robdclark at gmail.com> wrote: > > Btw, what is the hw response to invalid input (ie. bottom>top, invalid > size, etc)? >
Unfortunately the IOMMU page fault is happened. So we need some codes for protecting kernel. Thank you~ Best regards YJ > Ie. if it will just ignore the blit or raise an error irq which can be > handled sanely, it could be ok to avoid the overhead of the cmdstream > checking in the kernel. The kernel part really just needs to ensure > that userspace can't cause security problems (read/write access to > non-gfx-buffers, or lock up the system, that sort of thing). It > doesn't need to guarantee that the results are sensible. > > BR, > -R > > On Wed, Mar 13, 2013 at 5:03 AM, Inki Dae <inki.dae at samsung.com> wrote: > > This patch set checks the contents of g2d command list from user > > is valid or not according to G2D hardware restrictions. For now, > > G2D driver wasn't considered for them properly. > > > > For this, this patch set includes relevant code cleaups, fixups > > and adds a new function to get buffer size to the gem to be > > accessed by G2D dma. > > > > Inki Dae (1): > > drm/exynos: Add a new function to get gem buffer size > > > > YoungJun Cho (6): > > drm/exynos: Fix error routine to getting dma addr. > > drm/exynos: clear node object type at gem unmap > > drm/exynos: Fix G2D core mulfunctioning issue > > drm/exynos: Clean up some G2D codes for readability > > drm/exynos: Deal with g2d buffer info more efficiently > > drm/exynos: Check g2d cmd list for g2d restrictions > > > > drivers/gpu/drm/exynos/exynos_drm_g2d.c | 381 ++++++++++++++++++++++++++----- > > drivers/gpu/drm/exynos/exynos_drm_gem.c | 21 ++ > > drivers/gpu/drm/exynos/exynos_drm_gem.h | 5 + > > 3 files changed, 349 insertions(+), 58 deletions(-) > > > > -- > > 1.7.4.1 > > > > _______________________________________________ > > dri-devel mailing list > > dri-devel at lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/dri-devel > _______________________________________________ > dri-devel mailing list > dri-devel at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20130319/53b14d6c/attachment-0001.html>
