From: Michael Ellerman <mpe@ellerman.id.au>
To: "Michal Suchánek" <msuchanek@suse.de>
Cc: Gaurav Batra <gbatra@linux.ibm.com>, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc/pseries/iommu: LPAR panics when rebooted with a frozen PE
Date: Mon, 22 Apr 2024 15:40:52 +1000 [thread overview]
Message-ID: <87wmoqj6or.fsf@mail.lhotse> (raw)
In-Reply-To: <20240419111127.GZ20665@kitsune.suse.cz>
Michal Suchánek <msuchanek@suse.de> writes:
> Hello,
>
> On Fri, Apr 19, 2024 at 04:12:46PM +1000, Michael Ellerman wrote:
>> Gaurav Batra <gbatra@linux.ibm.com> writes:
>> > At the time of LPAR reboot, partition firmware provides Open Firmware
>> > property ibm,dma-window for the PE. This property is provided on the PCI
>> > bus the PE is attached to.
>>
>> AFAICS you're actually describing a bug that happens during boot *up*?
>>
>> Describing it as "reboot" makes me think you're talking about the
>> shutdown path. I think that will confuse people, me at least :)
>
> there is probably an assumption that it must have been running
> previously for the errors to happen in the first place but given the
> error state persists for a day it may be a very long 'reboot'.
Yeah. Which is good detail, but the actual change is to the boot up path
so I think it's better described that way.
cheers
prev parent reply other threads:[~2024-04-22 5:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 20:58 [PATCH] powerpc/pseries/iommu: LPAR panics when rebooted with a frozen PE Gaurav Batra
2024-04-19 6:12 ` Michael Ellerman
2024-04-19 11:11 ` Michal Suchánek
2024-04-19 14:41 ` Gaurav Batra
2024-04-22 5:42 ` Michael Ellerman
2024-04-22 5:40 ` Michael Ellerman [this message]
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