[REGRESSION] amdgpu: async system error exception from hdp_v5_0_flush_hdp()

[Alexey Klimov]

On Wed Apr 16, 2025 at 12:44 PM BST, Christian König wrote:
> Am 15.04.25 um 20:28 schrieb Alexey Klimov:
>> #regzbot introduced: v6.12..v6.13
>>
>> I use RX6600 on arm64 Orion o6 board and it seems that amdgpu is broken on recent kernels, fails on boot:
>
> Well in general we already had tons of problems with low end ARM64 boards. So first question of all is that board SBSA certified?

Yeah, I can imagine.
I can't find any info about SBSA cartification for that board hence I'd say that
state is unknown, hence most likely "no". At least that's what I think.
It is a good question for cix or cixtech.com-based emails.

They have some updated potentially unstable UEFI firmwares to test though.

> If not then the chances of that board actually working correctly are very low unfortunately.
>
>> [drm] amdgpu: 7886M of GTT memory ready.
>> [drm] GART: num cpu pages 131072, num gpu pages 131072
>> SError Interrupt on CPU11, code 0x00000000be000011 -- SError
>
> Any idea what that error code means?

Well, current thinking process that it means:
-- bits 31:26 system error interrupt;
-- bit 25 indicates that it was 32-bit instruction;
-- 0x11 in lsb is probably implementation-defined which can
be anything like bus errors, parity, access violations, etc

That's probably not very helping here.

Best regards,
Alexey