Re: [PATCH] drm: return false in drm_arch_can_wc_memory() for ARM

2018-12-21 Thread Eric Anholt
Alex Deucher writes: > On Fri, Dec 21, 2018 at 9:16 AM Liviu Dudau wrote: >> >> On Thu, Dec 20, 2018 at 04:36:19PM +0100, Daniel Vetter wrote: >> > On Thu, Dec 20, 2018 at 09:56:57AM -0500, Alex Deucher wrote: >> > > I'm not familiar enough with ARM to know if write combining >> > > is actually

Re: [PATCH] drm: return false in drm_arch_can_wc_memory() for ARM

2018-12-21 Thread Alex Deucher
On Fri, Dec 21, 2018 at 9:16 AM Liviu Dudau wrote: > > On Thu, Dec 20, 2018 at 04:36:19PM +0100, Daniel Vetter wrote: > > On Thu, Dec 20, 2018 at 09:56:57AM -0500, Alex Deucher wrote: > > > I'm not familiar enough with ARM to know if write combining > > > is actually an architectural limitation or

Re: [PATCH] drm: return false in drm_arch_can_wc_memory() for ARM

2018-12-21 Thread Liviu Dudau
On Thu, Dec 20, 2018 at 04:36:19PM +0100, Daniel Vetter wrote: > On Thu, Dec 20, 2018 at 09:56:57AM -0500, Alex Deucher wrote: > > I'm not familiar enough with ARM to know if write combining > > is actually an architectural limitation or if it's an issue > > with the PCIe IPs used on various platfo

Re: [PATCH] drm: return false in drm_arch_can_wc_memory() for ARM

2018-12-20 Thread Daniel Vetter
On Thu, Dec 20, 2018 at 09:56:57AM -0500, Alex Deucher wrote: > I'm not familiar enough with ARM to know if write combining > is actually an architectural limitation or if it's an issue > with the PCIe IPs used on various platforms, but so far > everyone that has tried to run radeon hardware on > A

[PATCH] drm: return false in drm_arch_can_wc_memory() for ARM

2018-12-20 Thread Alex Deucher
I'm not familiar enough with ARM to know if write combining is actually an architectural limitation or if it's an issue with the PCIe IPs used on various platforms, but so far everyone that has tried to run radeon hardware on ARM has had to disable it. So let's just make it official. Signed-off-b