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Date: Tue, 24 Jul 2012 14:26:33 +0200 From: Sasha Levin <levinsasha928@...il.com> To: Gleb Natapov <gleb@...hat.com> CC: rusty@...tcorp.com.au, mst@...hat.com, penberg@...nel.org, asias.hejun@...il.com, virtualization@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, kvm@...r.kernel.org, avi@...hat.com, anthony@...emonkey.ws, wency@...fujitsu.com Subject: Re: [RFC 0/2] virtio: provide a way for host to monitor critical events in the device On 07/24/2012 09:44 AM, Gleb Natapov wrote: > On Mon, Jul 23, 2012 at 10:32:39PM +0200, Sasha Levin wrote: >> As it was discussed recently, there's currently no way for the guest to notify >> the host about panics. Further more, there's no reasonable way to notify the >> host of other critical events such as an OOM kill. >> >> This short patch series introduces a new device named virtio-notifier which >> does two simple things: >> >> 1. Provide a simple interface for the guest to notify the host of critical > To get early OOPSes virtio will have to be compiled into the kernel. If > your are so keen on using virtio for this though, why not just use > dedicated virtio serial channel? Let's separate between having log for these events and receiving notifications about them. For the log part, I can already run a simple serial console to dump everything somewhere. I'm more concerned about having notifications about something critical happening when the guest is already up and running. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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