On 2/14/25 20:45, Rob Clark wrote: > On Sun, Jan 26, 2025 at 12:43 PM Dmitry Osipenko > <dmitry.osipenko@xxxxxxxxxxxxx> wrote: >> >> If userspace never maps GEM object, then BO wastes hostmem space >> because VirtIO-GPU driver maps VRAM BO at the BO's creating time. >> >> Make mappings on-demand by adding new RESOURCE_CREATE_BLOB IOCTL/UAPI >> hinting flag telling that host mapping should be deferred until first >> mapping is made when the flag is set by userspace. >> >> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx> > > I suppose we could have just added a new blob_flag, but then userspace > would need to probe the kernel to see whether the new flag was > supported. (Which isn't a big deal, that sort of thing is done in > many places.) But extending the struct does make it more transparent > to userspace. Either way, > > Reviewed-by: Rob Clark <robdclark@xxxxxxxxx Thanks for the review! -- Best regards, Dmitry
