amd核显不能使用共享显存

xking

设备环境：联想小新pro13 2019

BUG现象： 影视解码无法使用共享显存

出现频率：必现

联系方式：fnOS294-星夜

root@xinPro:~# dmesg | grep -i amdgpu
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-6.6.38-trim root=UUID=e8512473-f57e-4b96-bd9d-f3ff735ad7c0 ro modprobe.blacklist=pcspkr quiet amdgpu.gttsize=4096
[    0.017499] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.6.38-trim root=UUID=e8512473-f57e-4b96-bd9d-f3ff735ad7c0 ro modprobe.blacklist=pcspkr quiet amdgpu.gttsize=4096
[    5.469400] [drm] amdgpu kernel modesetting enabled.
[    5.472894] amdgpu: Virtual CRAT table created for CPU
[    5.472924] amdgpu: Topology: Add CPU node
[    5.473128] amdgpu 0000:03:00.0: enabling device (0006 -> 0007)
[    5.576672] amdgpu 0000:03:00.0: amdgpu: Fetched VBIOS from VFCT
[    5.576682] amdgpu: ATOM BIOS: 113-PICASSO-114
[    5.583465] amdgpu 0000:03:00.0: vgaarb: deactivate vga console
[    5.583470] amdgpu 0000:03:00.0: amdgpu: Trusted Memory Zone (TMZ) feature enabled
[    5.583525] amdgpu 0000:03:00.0: amdgpu: VRAM: 1024M 0x000000F400000000 - 0x000000F43FFFFFFF (1024M used)
[    5.583529] amdgpu 0000:03:00.0: amdgpu: GART: 1024M 0x0000000000000000 - 0x000000003FFFFFFF
[    5.583533] amdgpu 0000:03:00.0: amdgpu: AGP: 267419648M 0x000000F800000000 - 0x0000FFFFFFFFFFFF
[    5.583757] [drm] amdgpu: 1024M of VRAM memory ready
[    5.583760] [drm] amdgpu: 4096M of GTT memory ready.
[    5.584451] amdgpu: hwmgr_sw_init smu backed is smu10_smu
[    5.585515] amdgpu 0000:03:00.0: amdgpu: Will use PSP to load VCN firmware
[    5.679939] amdgpu 0000:03:00.0: amdgpu: RAS: optional ras ta ucode is not available
[    5.686438] amdgpu 0000:03:00.0: amdgpu: RAP: optional rap ta ucode is not available
[    5.694289] snd_hda_intel 0000:03:00.1: bound 0000:03:00.0 (ops amdgpu_dm_audio_component_bind_ops [amdgpu])
[    5.903298] kfd kfd: amdgpu: Allocated 3969056 bytes on gart
[    5.903318] kfd kfd: amdgpu: Total number of KFD nodes to be created: 1
[    5.903419] amdgpu: Virtual CRAT table created for GPU
[    5.903566] amdgpu: Topology: Add dGPU node [0x15d8:0x1002]
[    5.903568] kfd kfd: amdgpu: added device 1002:15d8
[    5.903585] amdgpu 0000:03:00.0: amdgpu: SE 1, SH per SE 1, CU per SH 11, active_cu_number 8
[    5.903796] amdgpu 0000:03:00.0: amdgpu: ring gfx uses VM inv eng 0 on hub 0
[    5.903799] amdgpu 0000:03:00.0: amdgpu: ring gfx_low uses VM inv eng 1 on hub 0
[    5.903802] amdgpu 0000:03:00.0: amdgpu: ring gfx_high uses VM inv eng 4 on hub 0
[    5.903804] amdgpu 0000:03:00.0: amdgpu: ring comp_1.0.0 uses VM inv eng 5 on hub 0
[    5.903806] amdgpu 0000:03:00.0: amdgpu: ring comp_1.1.0 uses VM inv eng 6 on hub 0
[    5.903809] amdgpu 0000:03:00.0: amdgpu: ring comp_1.2.0 uses VM inv eng 7 on hub 0
[    5.903811] amdgpu 0000:03:00.0: amdgpu: ring comp_1.3.0 uses VM inv eng 8 on hub 0
[    5.903813] amdgpu 0000:03:00.0: amdgpu: ring comp_1.0.1 uses VM inv eng 9 on hub 0
[    5.903815] amdgpu 0000:03:00.0: amdgpu: ring comp_1.1.1 uses VM inv eng 10 on hub 0
[    5.903817] amdgpu 0000:03:00.0: amdgpu: ring comp_1.2.1 uses VM inv eng 11 on hub 0
[    5.903819] amdgpu 0000:03:00.0: amdgpu: ring comp_1.3.1 uses VM inv eng 12 on hub 0
[    5.903821] amdgpu 0000:03:00.0: amdgpu: ring kiq_0.2.1.0 uses VM inv eng 13 on hub 0
[    5.903823] amdgpu 0000:03:00.0: amdgpu: ring sdma0 uses VM inv eng 0 on hub 8
[    5.903826] amdgpu 0000:03:00.0: amdgpu: ring vcn_dec uses VM inv eng 1 on hub 8
[    5.903828] amdgpu 0000:03:00.0: amdgpu: ring vcn_enc0 uses VM inv eng 4 on hub 8
[    5.903830] amdgpu 0000:03:00.0: amdgpu: ring vcn_enc1 uses VM inv eng 5 on hub 8
[    5.903832] amdgpu 0000:03:00.0: amdgpu: ring jpeg_dec uses VM inv eng 6 on hub 8
[    5.911271] [drm] Initialized amdgpu 3.54.0 20150101 for 0000:03:00.0 on minor 0
[    5.922587] fbcon: amdgpudrmfb (fb0) is primary device
[    5.980460] amdgpu 0000:03:00.0: [drm] fb0: amdgpudrmfb frame buffer device
root@xinPro:~#

飞牛技术同学

需自行排查相关问题 amd 核显 gpu 本身就只能用共享显存