Re: [Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-04 Thread Daniel Vetter
On Thu, Dec 04, 2014 at 09:48:11AM +, Chris Wilson wrote: > On Wed, Dec 03, 2014 at 02:59:24PM +, Tvrtko Ursulin wrote: > > From: Tvrtko Ursulin > > > > Multiple GGTT VMAs per object will be introduced in the near future which > > will > > make it impossible to guarantee normal GGTT view

Re: [Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-04 Thread Tvrtko Ursulin
On 12/04/2014 10:39 AM, Chris Wilson wrote: On Thu, Dec 04, 2014 at 10:30:30AM +, Tvrtko Ursulin wrote: So personally you don't think it should be of any concern if a GGTT VMA is at the head of the list, but it is not the same GGTT VMA which you would find there in majority of cases? Actu

Re: [Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-04 Thread Chris Wilson
On Thu, Dec 04, 2014 at 10:30:30AM +, Tvrtko Ursulin wrote: > > On 12/04/2014 10:17 AM, Chris Wilson wrote: > >On Thu, Dec 04, 2014 at 10:02:19AM +, Tvrtko Ursulin wrote: > >> > >>On 12/04/2014 09:48 AM, Chris Wilson wrote: > >>>On Wed, Dec 03, 2014 at 02:59:24PM +, Tvrtko Ursulin wrot

Re: [Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-04 Thread Tvrtko Ursulin
On 12/04/2014 10:17 AM, Chris Wilson wrote: On Thu, Dec 04, 2014 at 10:02:19AM +, Tvrtko Ursulin wrote: On 12/04/2014 09:48 AM, Chris Wilson wrote: On Wed, Dec 03, 2014 at 02:59:24PM +, Tvrtko Ursulin wrote: From: Tvrtko Ursulin Multiple GGTT VMAs per object will be introduced in t

Re: [Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-04 Thread Chris Wilson
On Thu, Dec 04, 2014 at 10:02:19AM +, Tvrtko Ursulin wrote: > > On 12/04/2014 09:48 AM, Chris Wilson wrote: > >On Wed, Dec 03, 2014 at 02:59:24PM +, Tvrtko Ursulin wrote: > >>From: Tvrtko Ursulin > >> > >>Multiple GGTT VMAs per object will be introduced in the near future which > >>will

Re: [Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-04 Thread Tvrtko Ursulin
On 12/04/2014 09:48 AM, Chris Wilson wrote: On Wed, Dec 03, 2014 at 02:59:24PM +, Tvrtko Ursulin wrote: From: Tvrtko Ursulin Multiple GGTT VMAs per object will be introduced in the near future which will make it impossible to guarantee normal GGTT view is at the head of the list. Purpose

Re: [Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-04 Thread Chris Wilson
On Wed, Dec 03, 2014 at 02:59:24PM +, Tvrtko Ursulin wrote: > From: Tvrtko Ursulin > > Multiple GGTT VMAs per object will be introduced in the near future which will > make it impossible to guarantee normal GGTT view is at the head of the list. > > Purpose of this patch is to break this assu

[Intel-gfx] [PATCH 1/3] drm/i915: Stop putting GGTT VMA at the head of the list

2014-12-03 Thread Tvrtko Ursulin
From: Tvrtko Ursulin Multiple GGTT VMAs per object will be introduced in the near future which will make it impossible to guarantee normal GGTT view is at the head of the list. Purpose of this patch is to break this assumption straight away so any potential hidden assumptions in the code base ca