Re: [Intel-gfx] [PATCH 3/4] drm/i915/gtt/xehpsdv: move scratch page to system memory

2021-12-08 Thread Andi Shyti
Hi Ram and Matt, > On some platforms the hw has dropped support for 4K GTT pages when > dealing with LMEM, and due to the design of 64K GTT pages in the hw, we > can only mark the *entire* page-table as operating in 64K GTT mode, > since the enable bit is still on the pde, and not the pte. And sin

[Intel-gfx] [PATCH 3/4] drm/i915/gtt/xehpsdv: move scratch page to system memory

2021-12-08 Thread Ramalingam C
From: Matthew Auld On some platforms the hw has dropped support for 4K GTT pages when dealing with LMEM, and due to the design of 64K GTT pages in the hw, we can only mark the *entire* page-table as operating in 64K GTT mode, since the enable bit is still on the pde, and not the pte. And since we

Re: [Intel-gfx] [PATCH 3/4] drm/i915/gtt/xehpsdv: move scratch page to system memory

2021-12-08 Thread Thomas Hellström
On 12/7/21 17:51, Ramalingam C wrote: From: Matthew Auld On some platforms the hw has dropped support for 4K GTT pages when dealing with LMEM, and due to the design of 64K GTT pages in the hw, we can only mark the *entire* page-table as operating in 64K GTT mode, since the enable bit is still

[Intel-gfx] [PATCH 3/4] drm/i915/gtt/xehpsdv: move scratch page to system memory

2021-12-07 Thread Ramalingam C
From: Matthew Auld On some platforms the hw has dropped support for 4K GTT pages when dealing with LMEM, and due to the design of 64K GTT pages in the hw, we can only mark the *entire* page-table as operating in 64K GTT mode, since the enable bit is still on the pde, and not the pte. And since we