xen-devel
Re: [Xen-devel] [PATCH 6/9] Linux support for vdevice bus
On 6/6/06, Rusty Russell <rusty@xxxxxxxxxxxxxxx> wrote:
Subject: Linux support for vdevice bus
This patch provides the Linux implementation of the vdevice bus.
FIXME: currently it does not support save/restore of the domain: it
should call stop before shutting down, and remap shares afterwards
before calling reconnect. This depends on exactly what we do with
shared pages on restore.
In general I find the 'remember to suspend on save' approach that we
are currently using for xenbus and drivers problematic, and I much
favor a 'reset on resume' approach instead. Sometimes when doing a
save (or migration, or, in my case, self-migration), the domain wants
to continue running after the save, and then having to shut down all
external devices just to immediately resume them is inelegant and
often creates a lot of trouble. If we are to change the IPC/sharing
mechanism (and you make some good arguments for that), I think we
should design for 'reset on resume' rather than 'suspend-on-save'.
Just my DKK0.02.
Jacob
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- [Xen-devel] [PATCH 1/9] Xen Share: Simplified I/O Mechanism, Rusty Russell
- [Xen-devel] [PATCH 3/9] privcmd interface addition to support share operations from Dom0 userspace, Rusty Russell
- [Xen-devel] [PATCH 4/9] /dev/xenshare for accessing/mapping shared pages from userspace, Rusty Russell
- [Xen-devel] [PATCH 5/9] Vdevice share in start_info, Rusty Russell
- [Xen-devel] [PATCH 6/9] Linux support for vdevice bus, Rusty Russell
- Re: [Xen-devel] [PATCH 6/9] Linux support for vdevice bus,
Jacob Gorm Hansen <=
- [Xen-devel] [PATCH 7/9] vdevice tool for manipulating vdevice bus, Rusty Russell
- [Xen-devel] [PATCH 8/9] Xen Share Net Device, Rusty Russell
- [Xen-devel] [PATCH 2/9] Linux kernel infrastructure for Xen Share access, Rusty Russell
- [Xen-devel] [PATCH 9/9] Simple Xenshare Block Device and userspace backend, Rusty Russell
- Re: [Xen-devel] [PATCH 1/9] Xen Share: Simplified I/O Mechanism, Harry Butterworth
- Re: [Xen-devel] [PATCH 1/9] Xen Share: Simplified I/O Mechanism, Harry Butterworth
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