On Fri, Jul 31, 2020 at 2:32 AM Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx> wrote: > On 2020/07/29 4:17, John Stultz wrote: > > Do you have a upstream driver that you plan to make use this new call? > > Unfortunately I don't have an upstream driver using this call. > > This call is called from dma-buf heaps "importer" or "customer", > and I only made an example (do nothing) importer driver > to test the call. > > > We want to have in-tree users of code added. > > I think this is a generic way to use non-default CMA heaps, however, > we need in-tree "importer" drivers to want to use non-default CMA heaps. > I don't find it from now. > Yea, I and again, I do agree this is functionality that will be needed. But we'll need to wait for a user (camera driver, etc which would utilize the reserved cma region) before we can merge it upstream. :( Do let me know if you have an out of tree driver that would make use of it, and we can see what can be done to help upstream things. thanks -john
