From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
Gerd Hoffmann <kraxel@redhat.com>,
qemu-devel@nongnu.org, Alexander Graf <agraf@suse.de>
Subject: Re: [Qemu-devel] [PATCH] RFC v2: hcd-ohci: add dma error handling
Date: Wed, 24 Jul 2013 19:49:42 +1000 [thread overview]
Message-ID: <51EFA336.1010600@ozlabs.ru> (raw)
In-Reply-To: <1374656722.3916.127.camel@pasglop>
On 07/24/2013 07:05 PM, Benjamin Herrenschmidt wrote:
> On Wed, 2013-07-24 at 18:28 +1000, Alexey Kardashevskiy wrote:
>> 1. if a physical device once reported UnrecoverableError, what is it
>> expected to be able to do after that? Should ohci_hcd module reloading bring
>> it back to life? With this patch, OHCI dies till reboot (but at least it does
>> not break other subsystems).
>
> Not sure what the spec says but I assume an HC reset should work. That
> and a PCI reset which we can potentially trigger in SW (though we
> haven't yet implemented the RTAS interfaces for it).
Double checked. "rmmod ohci_hcd; modprobe ohci_hcd" brings it back so we
are good here :)
--
Alexey
next prev parent reply other threads:[~2013-07-24 9:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-24 8:28 [Qemu-devel] [PATCH] RFC v2: hcd-ohci: add dma error handling Alexey Kardashevskiy
2013-07-24 9:05 ` Benjamin Herrenschmidt
2013-07-24 9:49 ` Alexey Kardashevskiy [this message]
2013-07-24 12:55 ` Gerd Hoffmann
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