From a121594006813eff7864a63e14573f3f5523e29c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Roberto=20de=20Souza?= Date: Wed, 26 Apr 2023 09:20:05 -0700 Subject: [PATCH] drm/xe: Limit the system memory size to half of the system memory MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit ttm_global_init() imposes this limitation. Cc: Matthew Auld Reviewed-by: Matthew Auld Signed-off-by: José Roberto de Souza Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/xe/xe_ttm_sys_mgr.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/xe/xe_ttm_sys_mgr.c b/drivers/gpu/drm/xe/xe_ttm_sys_mgr.c index 5b0674bbb8ed..3e1fa0c832ca 100644 --- a/drivers/gpu/drm/xe/xe_ttm_sys_mgr.c +++ b/drivers/gpu/drm/xe/xe_ttm_sys_mgr.c @@ -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); -- 2.25.1