Hello, 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. Actually, r282901 (https://svnweb.freebsd.org/base?view=revision&sortby=date&revision=282901) is the real trigger, verified by putting nooptions RACCT nooptions RACCT_DEFAULT_TO_DISABLED nooptions RCTL 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? Thanks, -Harry
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