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Paul Durrant
85e3b08eb7
XenServer already makes use of ~/control/feature-suspend being written to advertise guest capability of responding to 'suspend' when written to ~/control/shutdown and, since they are derived from XenServer drivers, the Xen Project Windows PV drivers attempt to write this value. The write currently fails for libxl provisioned VMs because ~/control is read-only to the guest (only ~/control/shutdown is writable, for ackowledgement purposes). This patch documents feature-suspend and also a set of similar control feature flags, so that that they may be added to libxl provisioned guests by subsequent patches: feature-poweroff: PV drivers/agent can shut down the guest feature-reboot: PV drivers/agent can reboot the guest feature-s3: PV drivers/agent can trigger guest sleep (HVM only) feature-s4: PV drivers/agent can trigger guest hibernate (HVM only) The patch (bacause it adds features relating to S3 and S4 power states) also clarifies that the initial set of platform properties mentioned are booleans, and updates the specifier accordingly. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Keir Fraser <keir@xen.org> Cc: Tim Deegan <tim@xen.org>