Module: Mesa Branch: main Commit: 029b1d3f262051c9b0fc3ba6c7faca2affa18ddf URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=029b1d3f262051c9b0fc3ba6c7faca2affa18ddf
Author: Kenneth Graunke <[email protected]> Date: Wed Dec 6 07:48:11 2023 -0800 anv: Drop 3/4 of PPGTT size restriction for sys heap size calculation This was mainly useful for older Gen7.x GPUs with 32-bit PPGTT, which are now supported by hasvk rather than anv. The remaining platforms which anv supports have 36, 47, or 48-bit PPGTT, which imposes a 3/4 limit of 48GB, 96TB, and 192TB of memory. The GPUs with 36-bit PPGTT are Elkhart Lake and Jasper Lake, which appear to be Atom CPUs that have a maximum supported memory configuration of 32GB or less, so this limit should not matter there. Nor is a multi-TB limit likely to matter on our other parts. Drop this check to simplify the heap and memory budget calculations. Cc: mesa-stable Reviewed-by: Lionel Landwerlin <[email protected]> Reviewed-by: José Roberto de Souza <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26553> --- src/intel/vulkan/anv_device.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c index 96e25aae813..316a5b472dc 100644 --- a/src/intel/vulkan/anv_device.c +++ b/src/intel/vulkan/anv_device.c @@ -883,11 +883,6 @@ anv_compute_sys_heap_size(struct anv_physical_device *device, else available_ram = total_ram * 3 / 4; - /* We also want to leave some padding for things we allocate in the driver, - * so don't go over 3/4 of the GTT either. - */ - available_ram = MIN2(available_ram, device->gtt_size * 3 / 4); - return available_ram; }
