From: "Michael S. Tsirkin" <mst@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org
Subject: virtio config access races
Date: Fri, 13 Jul 2012 01:59:41 +0300 [thread overview]
Message-ID: <20120712225941.GA9317@redhat.com> (raw)
It looks like there's a problem in the way virtio config currently
works: if driver reads config in probe routine, config
subsequently can change before core sets DRIVER_OK.
This will not cause an interrupt and so this event is lost.
Maybe we should document that devices should delay such
events until after DRIVER_OK?
--
MST
next reply other threads:[~2012-07-12 22:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-12 22:59 Michael S. Tsirkin [this message]
2012-07-13 3:55 ` virtio config access races Rusty Russell
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