Commit 0b04ea39 authored Feb 01, 2022 by Christian König Committed by Alex Deucher Jan 03, 2023

drm/amdgpu: allow zero as vram limit



This allows testing the driver without any VRAM.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Luben Tuikov <luben.tuikov@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent da2f9920

drivers/gpu/drm/amd/amdgpu/amdgpu.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -150,7 +150,7 @@ struct amdgpu_watchdog_timer
		* Modules parameters.
		*/
		extern int amdgpu_modeset;
		extern int amdgpu_vram_limit;
		extern unsigned int amdgpu_vram_limit;
		extern int amdgpu_vis_vram_limit;
		extern int amdgpu_gart_size;
		extern int amdgpu_gtt_size;

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -113,7 +113,7 @@
		#define KMS_DRIVER_MINOR 50
		#define KMS_DRIVER_PATCHLEVEL 0

		int amdgpu_vram_limit;
		unsigned int amdgpu_vram_limit = UINT_MAX;
		int amdgpu_vis_vram_limit;
		int amdgpu_gart_size = -1; /* auto */
		int amdgpu_gtt_size = -1; /* auto */

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -206,7 +206,7 @@ void amdgpu_gmc_vram_location(struct amdgpu_device adev, struct amdgpu_gmc mc,

		mc->vram_start = base;
		mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
		if (limit && limit < mc->real_vram_size)
		if (limit < mc->real_vram_size)
		mc->real_vram_size = limit;

		if (vis_limit && vis_limit < mc->visible_vram_size)