Bug 108164

Summary:	[radv] VM faults since 5d6a560a2986c9ab421b3c7904d29bb7bc35e36f
Product:	Mesa	Reporter:	Józef Kucia <joseph.kucia>
Component:	Drivers/Vulkan/radeon	Assignee:	mesa-dev
Status:	RESOLVED FIXED	QA Contact:	mesa-dev
Severity:	normal
Priority:	medium	Keywords:	bisected, regression
Version:	git
Hardware:	Other
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Józef Kucia 2018-10-03 13:06:32 UTC

The problem is reproducible with the vkmodelviewer demo: https://repo.or.cz/vkmodelviewer.git

 --- snip ---
[  367.911268] amdgpu 0000:03:00.0: [gfxhub] VMC page fault (src_id:0 ring:32 vm_id:5 pas_id:0)
[  367.911270] amdgpu 0000:03:00.0:   at page 0x0000000103b20000 from 27
[  367.911270] amdgpu 0000:03:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00540C40
 --- snip ---

This is a regression caused by the following commit:

commit 5d6a560a2986c9ab421b3c7904d29bb7bc35e36f
Author: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Date:   Tue Sep 25 20:26:58 2018 +0200

    radv: do not use the availability bit for timestamp queries

Comment 1 Samuel Pitoiset 2018-10-04 07:54:31 UTC

What GPU? This looks like Vega?

Comment 2 Józef Kucia 2018-10-04 07:56:59 UTC

(In reply to Samuel Pitoiset from comment #1)
> What GPU? This looks like Vega?

Vega.

 --- snip ---
vendorID       = 0x1002
deviceID       = 0x687f
deviceType     = DISCRETE_GPU
deviceName     = AMD RADV VEGA10 (LLVM 6.0.1)
 --- snip ---

Comment 3 Samuel Pitoiset 2018-10-04 08:21:58 UTC

Polaris is affected as well. I'm looking.

Comment 4 Samuel Pitoiset 2018-10-04 08:42:33 UTC

Does this help https://patchwork.freedesktop.org/patch/254755/ ?

Comment 5 Samuel Pitoiset 2018-10-04 08:58:00 UTC

Should be fixed with https://cgit.freedesktop.org/mesa/mesa/commit/?id=2b34985d93e7914ead00227aa2842846df3c487f

Thanks for the report!

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