Bug 200327 - iommu/vt-d: Clean up pasid quirk for pre-production devices breaks breaks GPU for i5 6600K
Summary: iommu/vt-d: Clean up pasid quirk for pre-production devices breaks breaks GPU...
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: IOMMU (show other bugs)
Hardware: x86-64 Linux
: P1 blocking
Assignee: drivers_iommu
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-06-28 12:41 UTC by Alexandre Peixoto Ferreira
Modified: 2019-06-16 15:22 UTC (History)
3 users (show)

See Also:
Kernel Version: 4.18.0-rc1
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
Commit that provokes the error (3.82 KB, application/mbox)
2018-06-28 12:41 UTC, Alexandre Peixoto Ferreira 		Details
dmesg from my machine with the error (195.17 KB, text/plain)
2018-06-28 12:44 UTC, Alexandre Peixoto Ferreira 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Alexandre Peixoto Ferreira 2018-06-28 12:41:41 UTC 
Created attachment 276971 [details]
Commit that provokes the error

In my i5-6600K the kernel 4.18.0-rcX fails to boot the GPU with the error: GPU HANG: ecode 9:0:0xfffffffe, reason: hang on rcs0, bcs0, vcs0, vecs0, action: reset. I opened this bug at https://bugs.freedesktop.org/show_bug.cgi?id=107017 but by bisecting the kernel this was the commit responsible for the error: 813835028e9ae1f18cd11bb0ec591d0f0577d96a. I validated that by compiling the 4.18.0-rc2 kernel twice, with and without the patch applied and confirmed that the error is provoked by that commit.

I attached the dmesg for the error and the commit in question.
Comment 1 Alexandre Peixoto Ferreira 2018-06-28 12:44:35 UTC 
Created attachment 276973 [details]
dmesg from my machine with the error
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