New Kernel 5.16 and new problem

[MauryG5]

Dear guys you Power, as you know the new Kernel 5.16 has just come out and I like to do it as usual, I wanted to try it immediately, compiling my version.  Obviously now from 5.14 onwards you have to set the AMD GPU parameter to 0 otherwise it won't start.  Well after having done everything and started this beautiful news appeared to me, which you can see in the picture and at that point everything freezes and eventually it does not work and you have to do a reset and restart ... I say it is possible never that every time there must be a new problem in these Kernels !!!!  I can not understand!

[tle]

I have not tried it yet, still waiting for official build from Fedora team.

However I do not think 5.16 is that much different to 5.14 because there aren't major change that benefits PPC.

The AMDGPU is still very unreliable so system freeze is expected. What pagesize do you compile the kernel with?

[MauryG5]

Ever since Daniel Pocock showed me the difference, I always use 4K pages and since then the Kernel on Navi 10 has always worked.  Now I don't know why something is missing, it seems that with 5.16 they have made some modification that requires what it writes in the start screen you see ... I don't know ...

[Logout]

However I do not think 5.16 is that much different to 5.14 because there aren't major change that benefits PPC.

There should be support from 5.16 for KVM on Book3e PowerPC CPUs derived from e6500 like the T2080 in the future PowerPC notebook and current T2080 dev boards. That is no benefit for us (= POWER9 users), but certainly quite a step for people on other current PPC64 machines as there in fact are just the two groups - big-iron-derived POWER9 and embedded Book3e CPUs.

[MauryG5]

I have not tried it yet, still waiting for official build from Fedora team.

However I do not think 5.16 is that much different to 5.14 because there aren't major change that benefits PPC.

The AMDGPU is still very unreliable so system freeze is expected. What pagesize do you compile the kernel with?

I personally Fedora I unmounted it from the computer and put it aside, I don't use it anymore. Too bad since he switched to Gnome 40 and they don't improve anything from that point of view so I gave up. Much better Ubuntu that better manages the Gnome in all its forms, it also updates a lot and among other things with the 22.04 it will have an optimization for Power 9 and currently it seems to me that it is the only distro that has it in the pipeline. You have some problems like the unresolved bug in the Firefox history, or the audio CDs that it does not read, but these are things that cannot be overcome because the distro itself works perfectly unlike Fedora or Debian ... In any case, the problem is always for AMD GPU management, something they have changed and now you have to understand what it takes to get it started, for sure other people will notice the problem and will start investigating ...

[MauryG5]

Guys sorry but still have no news of Kernel 5.16 problems on AMD Radeon graphics cards? It's been a while now and I think it will have come to you via Fedora too ...

[SiteAdmin]

The issues should be fixed in the upstream kernel GIT tree:

https://www.spinics.net/lists/amd-gfx/msg74710.html

https://lwn.net/Articles/886568/

Can you confirm the issues are resolved for you on 5.16.2 or higher?

[MPC7500]

Kernel 5.16 has a different issue. Even AST GPU doesn't work.

[MauryG5]

I didn't know about the AST GPU to be honest. Personally I am still using 10.15, given the problems that there are on 5.16 so now I don't know if something has changed, I would like some confirmation before compiling a version 16 ...

[MauryG5]

Here I just tried to compile and install the new 5.17 kernel but the problem is still the same as 5.16, something is missing and it does not start ... this is the error message at startup ...

[SiteAdmin]

Has this failure been reported upstream to the graphics maintainers?  If so, can you provide a link to the bug report?

[MauryG5]

I don't know how to report the problem and I don't know where to do it, I already the first time when I noticed it on the first version of 5.16, I started this discussion here on the forum but I don't know how to do it specifically and where to do it unfortunately ... I need that you help me in this regard ...

[matgraf]

Blackbird + Radeon 5700 XT + debian sid + kernel 5.16.16

Code: [Select]

[    3.072146] Unrecoverable VMX/Altivec Unavailable Exception f20 at c008000001f3357c
[    3.072170] Oops: Unrecoverable VMX/Altivec Unavailable Exception, sig: 6 [#1]
[    3.072196] LE PAGE_SIZE=4K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV
[    3.072212] Modules linked in: amdgpu(+) gpu_sched i2c_algo_bit drm_ttm_helper ttm drm_kms_helper syscopyarea sd_mod sysfillrect sysimgblt xhci_pci fb_sys_fops xhci_hcd nvme tg3 usbcore drm nvme_core crc32c_vpmsum libphy t10_pi ahci crc_t10dif crct10dif_generic ptp crct10dif_vpmsum usb_common libahci pps_core crct10dif_common drm_panel_orientation_quirks
[    3.072310] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.16.16 #1
[    3.072336] Workqueue: events work_for_cpu_fn
[    3.072361] NIP:  c008000001f3357c LR: c008000001f344cc CTR: 0000000000000000
[    3.072395] REGS: c000000001aa32b0 TRAP: 0f20   Not tainted  (5.16.16)
[    3.072428] MSR:  9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 84002220  XER: 00000004
[    3.072472] CFAR: c008000001f344c8 IRQMASK: 0
[    3.072472] GPR00: c008000001f344cc c000000001aa3550 c00800000224d000 0000000000000000
[    3.072472] GPR04: c000000004e80000 c000000004c8c800 c000000004c8d000 c0ccc80404c8b0c0
[    3.072472] GPR08: c0000003ff3a4328 0000000000000000 0000000000000000 c000000004c8cc00
[    3.072472] GPR12: c000000000477530 c000000001777000 c00000000016b338 c000000003e66120
[    3.072472] GPR16: c000000003e66128 c000000003e60000 c000000003e76ac0 c000000003e66138
[    3.072472] GPR20: c000000003e66140 c000000003e66130 0000000000000100 0000000000000001
[    3.072472] GPR24: 0000000000000001 c00800000225ba38 0000000000000001 c000000003e75bc1
[    3.072472] GPR28: c000000004e90000 c000000001aa37b0 c000000004e80000 c000000004c8c800
[    3.072726] NIP [c008000001f3357c] dcn20_resource_construct+0x44/0xf30 [amdgpu]
[    3.073010] LR [c008000001f344cc] dcn20_create_resource_pool+0x64/0x100 [amdgpu]
[    3.073291] Call Trace:
[    3.073299] [c000000001aa3550] [c008000001f344b0] dcn20_create_resource_pool+0x48/0x100 [amdgpu] (unreliable)
[    3.073585] [c000000001aa35d0] [c00800000205d7f0] dc_create_resource_pool+0x2f8/0x3a0 [amdgpu]
[    3.073860] [c000000001aa3600] [c00800000204e694] dc_create+0x1cc/0x680 [amdgpu]
[    3.074129] [c000000001aa36b0] [c008000001eb93c4] amdgpu_dm_init.isra.0+0x1ec/0x1dd0 [amdgpu]
[    3.074404] [c000000001aa3910] [c008000001ebafd0] dm_hw_init+0x28/0x60 [amdgpu]
[    3.074672] [c000000001aa3940] [c008000001c0ac9c] amdgpu_device_init+0x1d34/0x21b0 [amdgpu]
[    3.074899] [c000000001aa3a90] [c008000001c0c3b0] amdgpu_driver_load_kms+0x48/0x370 [amdgpu]
[    3.075118] [c000000001aa3b10] [c008000001c01e6c] amdgpu_pci_probe+0x264/0x400 [amdgpu]
[    3.075336] [c000000001aa3bc0] [c000000000802688] local_pci_probe+0x68/0x110
[    3.075365] [c000000001aa3c40] [c000000000158e98] work_for_cpu_fn+0x38/0x60
[    3.075391] [c000000001aa3c70] [c00000000015ec28] process_one_work+0x2a8/0x590
[    3.075428] [c000000001aa3d10] [c00000000015f810] worker_thread+0x2a0/0x610
[    3.075463] [c000000001aa3da0] [c00000000016b4e8] kthread+0x1b8/0x1c0
[    3.075488] [c000000001aa3e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64
[    3.075507] Instruction dump:
[    3.075517] fb61ffd8 fbc1fff0 fbe1fff8 fa81ffa0 faa1ffa8 fac1ffb0 fae1ffb8 fb01ffc0
[    3.075549] fb21ffc8 fb41ffd0 fb81ffe0 fba1ffe8 <100004c4> 3920ff90 3940ff80 7c9f2378
[    3.075583] ---[ end trace d9884fa0e00b9a00 ]---


[MPC7500]

This is exactly the error message I remember and this has nothing to do with amdgpu.

Code: [Select]

Unrecoverable VMX/Altivec Unavailable Exception

[ClassicHasClass]

Seeing if @sharkcz knows anything about it.