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During kexec all old watches have to be removed, otherwise the new kernel will receive unexpected events. Allow a guest to reset itself and cleanup all of its watches and transactions. Add a new XS_RESET_WATCHES command to do the reset on behalf of the guest. (Changes by iwj: specify the argument to be a single nul byte. Permit read-only clients to use the new command.) Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>