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| author | David Woodhouse <dwmw@amazon.co.uk> | 2023-01-31 15:00:54 +0000 |
|---|---|---|
| committer | David Woodhouse <dwmw@amazon.co.uk> | 2023-03-07 17:04:30 +0000 |
| commit | 766804b101d7e452ad85995c231a5c3454f4e25b (patch) | |
| tree | d981f21407fd98e957378bc3ad9227da1398b3df /hw/i386/kvm/xenstore_impl.h | |
| parent | be1934dfefe74aa1b978c0cda64c2b6282301196 (diff) | |
| download | focaccia-qemu-766804b101d7e452ad85995c231a5c3454f4e25b.tar.gz focaccia-qemu-766804b101d7e452ad85995c231a5c3454f4e25b.zip | |
hw/xen: Implement core serialize/deserialize methods for xenstore_impl
This implements the basic migration support in the back end, with unit
tests that give additional confidence in the node-counting already in
the tree.
However, the existing PV back ends like xen-disk don't support migration
yet. They will reset the ring and fail to continue where they left off.
We will fix that in future, but not in time for the 8.0 release.
Since there's also an open question of whether we want to serialize the
full XenStore or only the guest-owned nodes in /local/domain/${domid},
for now just mark the XenStore device as unmigratable.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Diffstat (limited to 'hw/i386/kvm/xenstore_impl.h')
| -rw-r--r-- | hw/i386/kvm/xenstore_impl.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/i386/kvm/xenstore_impl.h b/hw/i386/kvm/xenstore_impl.h index 2f81251b5e..bbe2391e2e 100644 --- a/hw/i386/kvm/xenstore_impl.h +++ b/hw/i386/kvm/xenstore_impl.h @@ -61,4 +61,9 @@ int xs_impl_unwatch(XenstoreImplState *s, unsigned int dom_id, void *opaque); int xs_impl_reset_watches(XenstoreImplState *s, unsigned int dom_id); +GByteArray *xs_impl_serialize(XenstoreImplState *s); +int xs_impl_deserialize(XenstoreImplState *s, GByteArray *bytes, + unsigned int dom_id, xs_impl_watch_fn watch_fn, + void *watch_opaque); + #endif /* QEMU_XENSTORE_IMPL_H */ |