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Subject: Re: [virtio] [PATCH v3 1/1] virtio-ccw: introduce revisions
Cornelia Huck <email@example.com> writes: > On Tue, 05 Nov 2013 16:59:19 +1030 > Rusty Russell <firstname.lastname@example.org> wrote: > >> Cornelia Huck <email@example.com> writes: >> > Provide a new ccw that allows devices and drivers to operate on selected >> > revision levels. >> > >> > VIRTIO-42 >> > >> > Signed-off-by: Cornelia Huck <firstname.lastname@example.org> >> > >> > --- >> > >> > Changes v2 -> v3: >> > - Reset will not clear the revision; instead, the revision is cleared >> > when the subchannel is disabled >> >> Does this work properly across kexec scenarios? > > Kexec on s390 will do a diagnose (hypercall) that triggers (among other > things) a channel subsystem reset, which in turn includes disabling all > subchannels. This means the kexeced guest will be presented with an > unset revision. Great, thanks. Cheers, Rusty.