Re: [PATCH] drm/vgem: fix cache synchronization on arm/arm64

2019-08-01 Thread Rob Clark
On Thu, Aug 1, 2019 at 8:34 AM Chris Wilson wrote: > > Quoting Rob Clark (2019-08-01 16:18:45) > > On Thu, Aug 1, 2019 at 5:40 AM Chris Wilson > > wrote: > > > > > > Quoting Sean Paul (2019-07-31 20:23:31) > > > > On Fri, Jul 19, 2019 at 11:21:53AM +0200, Daniel Vetter wrote: > > > > > On Wed, J

Re: [PATCH] drm/vgem: fix cache synchronization on arm/arm64

2019-08-01 Thread Chris Wilson
Quoting Rob Clark (2019-08-01 16:18:45) > On Thu, Aug 1, 2019 at 5:40 AM Chris Wilson wrote: > > > > Quoting Sean Paul (2019-07-31 20:23:31) > > > On Fri, Jul 19, 2019 at 11:21:53AM +0200, Daniel Vetter wrote: > > > > On Wed, Jul 17, 2019 at 02:15:37PM -0700, Rob Clark wrote: > > > > > From: Rob C

Re: [PATCH] drm/vgem: fix cache synchronization on arm/arm64

2019-08-01 Thread Rob Clark
On Thu, Aug 1, 2019 at 5:40 AM Chris Wilson wrote: > > Quoting Sean Paul (2019-07-31 20:23:31) > > On Fri, Jul 19, 2019 at 11:21:53AM +0200, Daniel Vetter wrote: > > > On Wed, Jul 17, 2019 at 02:15:37PM -0700, Rob Clark wrote: > > > > From: Rob Clark > > > > > > > > drm_cflush_pages() is no-op on

Re: [PATCH] drm/vgem: fix cache synchronization on arm/arm64

2019-08-01 Thread Chris Wilson
Quoting Sean Paul (2019-07-31 20:23:31) > On Fri, Jul 19, 2019 at 11:21:53AM +0200, Daniel Vetter wrote: > > On Wed, Jul 17, 2019 at 02:15:37PM -0700, Rob Clark wrote: > > > From: Rob Clark > > > > > > drm_cflush_pages() is no-op on arm/arm64. But instead we can use > > > dma_sync API. > > > >

Re: [PATCH] drm/vgem: fix cache synchronization on arm/arm64

2019-07-31 Thread Sean Paul
On Fri, Jul 19, 2019 at 11:21:53AM +0200, Daniel Vetter wrote: > On Wed, Jul 17, 2019 at 02:15:37PM -0700, Rob Clark wrote: > > From: Rob Clark > > > > drm_cflush_pages() is no-op on arm/arm64. But instead we can use > > dma_sync API. > > > > Fixes failures w/ vgem_test. > > > > Signed-off-by:

Re: [PATCH] drm/vgem: fix cache synchronization on arm/arm64

2019-07-19 Thread Daniel Vetter
On Wed, Jul 17, 2019 at 02:15:37PM -0700, Rob Clark wrote: > From: Rob Clark > > drm_cflush_pages() is no-op on arm/arm64. But instead we can use > dma_sync API. > > Fixes failures w/ vgem_test. > > Signed-off-by: Rob Clark > --- > An alternative approach to the series[1] I sent yesterday >

[PATCH] drm/vgem: fix cache synchronization on arm/arm64

2019-07-17 Thread Rob Clark
From: Rob Clark drm_cflush_pages() is no-op on arm/arm64. But instead we can use dma_sync API. Fixes failures w/ vgem_test. Signed-off-by: Rob Clark --- An alternative approach to the series[1] I sent yesterday On the plus side, it keeps the WC buffers and avoids any drm core changes. On th