Re: kern/57440: Endless "Resetting chip for stopped heartbeat on bcs0" on i915drmkms

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

The following reply was made to PR kern/57440; it has been noted by GNATS.

From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: kern/57440: Endless "Resetting chip for stopped heartbeat on bcs0"
	 on i915drmkms
Date: Fri, 18 Aug 2023 02:16:58 +0900

 > >Synopsis:       Endless "Resetting chip for stopped heartbeat on bcs0" on i915drmkms
 
 After several bisect,
  https://github.com/NetBSD/src/commit/b8e26ac0
  https://mail-index.netbsd.org/source-changes/2021/12/18/msg134674.html
 the above commit is good, and
  https://github.com/NetBSD/src/commit/783aefbc
  https://mail-index.netbsd.org/source-changes/2021/12/19/msg135959.html
 this commit is bad.
 
 So my "stopped heartbeat" problem seems caused by
 "Import drm from Linux v5.6-rc3" and related >1280 drm chanegs
 on 2021/12/18 and 2021/12/19? (really hard to bisect further)
  https://mail-index.netbsd.org/source-changes/2021/12/18/msg134675.html
  https://mail-index.netbsd.org/source-changes/2021/12/date3.html
  https://mail-index.netbsd.org/source-changes/2021/12/date4.html
  https://mail-index.netbsd.org/source-changes/2021/12/date5.html
  https://mail-index.netbsd.org/source-changes/2021/12/date6.html
  https://mail-index.netbsd.org/source-changes/2021/12/date7.html
  https://mail-index.netbsd.org/source-changes/2021/12/date8.html
 
 ---
 Izumi Tsutsui