From eb58ad143dab0c9d649d702cc929f6bd4b62b455 Mon Sep 17 00:00:00 2001
From: Xiaogang Chen <xiaogang.chen@amd.com>
Date: Fri, 30 Jun 2023 11:38:35 -0500
Subject: drm/amdgpu: have bos for PDs/PTS cpu accessible when kfd uses cpu to
update vm
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When kfd uses cpu to update vm iterates all current PDs/PTs bos, adds
AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED flag and kmap them to kernel virtual
address space before kfd updates the vm that was created by gfx.
Signed-off-by: Xiaogang Chen <Xiaogang.Chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c | 1 +
1 file changed, 1 insertion(+)
(limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c')
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c
index 31913ae86de6..6e31621452de 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c
@@ -31,6 +31,7 @@
*/
static int amdgpu_vm_cpu_map_table(struct amdgpu_bo_vm *table)
{
+ table->bo.flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
return amdgpu_bo_kmap(&table->bo, NULL);
}
--
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