On Wed, Oct 9, 2019 at 10:07 AM Daniel Vetter <daniel@xxxxxxxx> wrote: > > On Fri, Sep 27, 2019 at 09:46:11PM +0800, Qiang Yu wrote: > > drm_gem_objects_lookup does not use user space bo handles > > directly and left the user to kernel copy work to a new > > interface drm_gem_objects_lookup_user. > > > > This is for driver like lima which does not pass gem bo > > handles continously in an array in ioctl argument. > > > > v2: > > 1. add drm_gem_objects_lookup_user > > 2. remove none-zero check as all caller will check before > > calling this function > > > > Cc: Rob Herring <robh@xxxxxxxxxx> > > Cc: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx> > > Cc: Steven Price <steven.price@xxxxxxx> > > Cc: Alyssa Rosenzweig <alyssa.rosenzweig@xxxxxxxxxxxxx> > > Suggested-by: Rob Herring <robh@xxxxxxxxxx> > > Signed-off-by: Qiang Yu <yuq825@xxxxxxxxx> > > --- > > drivers/gpu/drm/drm_gem.c | 57 +++++++++++++++++++------ > > drivers/gpu/drm/panfrost/panfrost_drv.c | 6 +-- > > include/drm/drm_gem.h | 4 +- > > 3 files changed, 49 insertions(+), 18 deletions(-) > > > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > > index 6854f5867d51..a5e88c3e6d25 100644 > > --- a/drivers/gpu/drm/drm_gem.c > > +++ b/drivers/gpu/drm/drm_gem.c > > @@ -679,11 +679,11 @@ static int objects_lookup(struct drm_file *filp, u32 *handle, int count, > > /** > > * drm_gem_objects_lookup - look up GEM objects from an array of handles > > * @filp: DRM file private date > > - * @bo_handles: user pointer to array of userspace handle > > + * @bo_handles: array of GEM object handles > > * @count: size of handle array > > * @objs_out: returned pointer to array of drm_gem_object pointers > > * > > - * Takes an array of userspace handles and returns a newly allocated array of > > + * Takes an array of GEM object handles and returns a newly allocated array of > > * GEM objects. > > * > > * For a single handle lookup, use drm_gem_object_lookup(). > > @@ -695,26 +695,56 @@ static int objects_lookup(struct drm_file *filp, u32 *handle, int count, > > * failure. 0 is returned on success. > > * > > */ > > -int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles, > > +int drm_gem_objects_lookup(struct drm_file *filp, u32 *bo_handles, > > int count, struct drm_gem_object ***objs_out) > > You can't do this change without updating all the drivers. Simpler to keep > this one as-is, and create a new function with an _internal suffix. The only driver currently is panfrost and it is updated in this patch. Rob _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
