Re: [PATCH 4/4] udmabuf: implement begin_cpu_access/end_cpu_access hooks

2019-12-12 Thread Chia-I Wu
Hi, On Mon, Dec 9, 2019 at 2:44 PM Chia-I Wu wrote: > > On Mon, Dec 2, 2019 at 5:36 PM Gurchetan Singh > wrote: > > > > With the misc device, we should end up using the result of > > get_arch_dma_ops(..) or dma-direct ops. > > > > This can allow us to have WC mappings in the guest after > > sync

Re: [PATCH 4/4] udmabuf: implement begin_cpu_access/end_cpu_access hooks

2019-12-09 Thread Chia-I Wu
On Mon, Dec 2, 2019 at 5:36 PM Gurchetan Singh wrote: > > With the misc device, we should end up using the result of > get_arch_dma_ops(..) or dma-direct ops. > > This can allow us to have WC mappings in the guest after > synchronization. > > Signed-off-by: Gurchetan Singh > --- > drivers/dma-bu