On 2018-12-20 11:07 a.m., Mikhail Gavrilov wrote: > On Thu, 20 Dec 2018 at 19:19, StDenis, Tom <Tom.StDenis@xxxxxxx> wrote: >> >> Ya I was right. With a plain build I can access the files just fine. >> >> >> >> I did manage to get into a weird shell where I couldn't cat >> amdgpu_gca_config from bash though after a reboot (had updates pending) >> it works fine. >> >> If you can't cat those files then neither can umr. >> >> So NOTABUG :-) >> > > I am very happy for you. But what about me? > I don't have idea how make this files available on my system. > And of course I tried reboot and try again cat amdgpu_gca_config > several times but all times without success. Sorry I didn't mean to be dismissive. It's just not a bug in umr though. On Fedora I can access those files as root just fine: tom@fx8:~$ sudo bash [sudo] password for tom: root@fx8:/home/tom# cd /sys/kernel/debug/dri/0 root@fx8:/sys/kernel/debug/dri/0# xxd -e amdgpu_gca_config 00000000: 00000003 00000001 00000004 0000000b ................ 00000010: 00000001 00000002 00000004 00000100 ................ 00000020: 00000020 00000008 00000020 00000100 ....... ....... 00000030: 00000030 000004c0 00000000 00000003 0............... 00000040: 00000000 00000000 00000000 00000000 ................ 00000050: 00000000 00000000 24000042 00000002 ........B..$.... 00000060: 00000001 00004100 017f9fcf 0000008e .....A.......... 00000070: 00000001 000015dd 000000c6 0000d000 ................ 00000080: 00001458 X... root@fx8:/sys/kernel/debug/dri/0# There must be some sort of ACL or something going on here. Tom > > Also I note that not all files not permitted for read from > /sys/kernel/debug/dri/0/* > I was able to dump contents of some files in debugfs.txt (see attachments) > List of available for readind files: > amdgpu_evict_gtt > amdgpu_evict_vram > amdgpu_fence_info > amdgpu_firmware_info > amdgpu_gds_mm > amdgpu_gem_info > amdgpu_gpu_recover > amdgpu_gtt_mm > amdgpu_gws_mm > amdgpu_oa_mm > amdgpu_pm_info > amdgpu_sa_info > amdgpu_test_ib > amdgpu_vbios > amdgpu_vram_mm > clients > framebuffer > gem_names > internal_clients > name > state > ttm_page_pool > > May some kernel options restrict access for files in debugfs (for > example to amdgpu_gca_config)? > If yes on which options should I pay attention? > I have no more ideas. I tried everything. > > > > > -- > Best Regards, > Mike Gavrilov. >
