r284665 causes MSI problems -> ahcich2: Timeout in slot 11 port 0
h.schmalzbauer at omnilan.de
Sat Jul 11 17:57:00 UTC 2015
r284665 causes ahci(4) to fail with timeouts when using MSI (the default).
'hint.ahci.0.msi=0' is one way to make ahci(4) working with r284665, but
obviously not the desired solution, it just disables usage of an MSI.
I can't find suspicious code in r282213 which could cause this strange
regression, but I verified carefully that problem arises with r284665.
is the real trigger, verified by putting
into my kernel config -> problem vanishes!
Setting "kern.racct.enable=1" doesn't make any difference, as soon as
'kern.features.racct' exists, there's the ahci(4)/ahcich2 timeout and
machine doesn't finish booting.
Unfortunately, I don't have any idea how to track this down to the
actual culprit, but I hope the RACCT hackers do have ;-)
Shall I open a bugzilla ticket?
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