[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-03-04 Thread Alex Deucher
On Fri, Jan 23, 2015 at 3:05 AM, Thierry Reding wrote: > From: Thierry Reding > > The current implementation is limited by the number of addresses that > fit into an unsigned long. This causes problems on 32-bit Tegra where > unsigned long is 32-bit but drm_mm is used to manage an IOVA space of >

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-27 Thread Russell King - ARM Linux
On Tue, Jan 27, 2015 at 09:31:26AM +0100, Thomas Hellstrom wrote: > On 01/27/2015 09:15 AM, Thierry Reding wrote: > > Are you referring to the 4 GiB - 1 comment? The point I was trying to > > make is not that the granularity of the IOVA space needs to be 1 byte > > but rather that using an unsigned

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-27 Thread Thomas Hellstrom
On 01/27/2015 09:15 AM, Thierry Reding wrote: > On Tue, Jan 27, 2015 at 07:07:44AM +0100, Thomas Hellstrom wrote: >> On 01/26/2015 11:51 PM, Dave Airlie wrote: >>> On 23 January 2015 at 18:05, Thierry Reding wrote: From: Thierry Reding The current implementation is limited by the n

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-27 Thread Chris Wilson
On Tue, Jan 27, 2015 at 08:51:12AM +1000, Dave Airlie wrote: > On 23 January 2015 at 18:05, Thierry Reding > wrote: > > From: Thierry Reding > > > > The current implementation is limited by the number of addresses that > > fit into an unsigned long. This causes problems on 32-bit Tegra where > >

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-27 Thread Thierry Reding
On Tue, Jan 27, 2015 at 07:07:44AM +0100, Thomas Hellstrom wrote: > On 01/26/2015 11:51 PM, Dave Airlie wrote: > > On 23 January 2015 at 18:05, Thierry Reding > > wrote: > >> From: Thierry Reding > >> > >> The current implementation is limited by the number of addresses that > >> fit into an uns

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-27 Thread Dave Airlie
On 23 January 2015 at 18:05, Thierry Reding wrote: > From: Thierry Reding > > The current implementation is limited by the number of addresses that > fit into an unsigned long. This causes problems on 32-bit Tegra where > unsigned long is 32-bit but drm_mm is used to manage an IOVA space of > 4 G

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-27 Thread Thomas Hellstrom
On 01/26/2015 11:51 PM, Dave Airlie wrote: > On 23 January 2015 at 18:05, Thierry Reding > wrote: >> From: Thierry Reding >> >> The current implementation is limited by the number of addresses that >> fit into an unsigned long. This causes problems on 32-bit Tegra where >> unsigned long is 32-bi

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-26 Thread Alex Deucher
On Fri, Jan 23, 2015 at 3:05 AM, Thierry Reding wrote: > From: Thierry Reding > > The current implementation is limited by the number of addresses that > fit into an unsigned long. This causes problems on 32-bit Tegra where > unsigned long is 32-bit but drm_mm is used to manage an IOVA space of >

[PATCH] drm/mm: Support 4 GiB and larger ranges

2015-01-23 Thread Thierry Reding
From: Thierry Reding The current implementation is limited by the number of addresses that fit into an unsigned long. This causes problems on 32-bit Tegra where unsigned long is 32-bit but drm_mm is used to manage an IOVA space of 4 GiB. Given the 32-bit limitation, the range is limited to 4 GiB