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drm/xe: Limit the system memory size to half of the system memory

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ttm_global_init() imposes this limitation.

Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
José Roberto de Souza 2023-04-26 09:20:05 -07:00 committed by Rodrigo Vivi
parent fdb3abcebb
commit a121594006
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/xe/xe_ttm_sys_mgr.c
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@ -105,7 +105,10 @@ int xe_ttm_sys_mgr_init(struct xe_device *xe)
u64 gtt_size;
si_meminfo(&si);
gtt_size = (u64)si.totalram * si.mem_unit * 3/4;
gtt_size = (u64)si.totalram * si.mem_unit;
/* TTM limits allocation of all TTM devices by 50% of system memory */
gtt_size /= 2;
man->use_tt = true;
man->func = &xe_ttm_sys_mgr_func;
ttm_resource_manager_init(man, &xe->ttm, gtt_size >> PAGE_SHIFT);