The return value of Xenbus routines xenbus_transaction_start(),
xenbus_printf(), xenbus_transaction_end(), etc. is a pointer of error
message. This pointer should be passed to free() to release the
allocated memory when it is no longer needed.
Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
In a lot of places in MiniOS frontends, xenbus_watch_path_token is
used instead of xenbus_watch_path to get more precise wake ups. To
free those, xenbus_unwatch_path_token has to be used instead of
xenbus_unwatch_path, else the unwatch operation will fail. This fixes
spurious watch events left by pv-grub.
Signed-Off-By: Samuel Thibault <samuel.thibault@ens-lyon.org>
As part of making stubdom usable on NetBSD, it is necessary to
restructure the minios headers to avoid conflicts with NetBSD's
crossbuild toolchain.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Obviously save\restore is not going to work if fs-backend is missing,
but at least the stubdom will be able to work correctly in all the
other cases.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
While pretty simplistic, it appears to serve the purpose at the moment
(i.e. it spotted two places where a GNU extension was used withou
proper preprocessor conditionals). The "simplistic" here includes that
the checking gets only done for native builds, and ia64 gets excluded
due to its arch-specific header intentionally (for whatever reason)
checking that anonymous struct/unions can be used.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
provide their own queue of events, because else we can not dispatch to
watchers running in parallel.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
evtchn_bind_interdomain used to clear any already pending event before
binding a handler, because else the handler may be called before it is
ready. That however leads to missed events, which I had to workaround
for the HVM case.
This changes the semantics of bind_evtchn, and thus of all the
event channel binding functions (bind_virq, evtchn_alloc_unbound,
evtchn_bind_interdomain) into not unmasking the event itself, hence
letting the caller initialize properly before unmasking the port (e.g.
record the port number in an appropriate place).
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser