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Konrad Rzeszutek Wilk
11ff40fa7b
The implementation does not actually do any patching. It just adds the framework for doing the hypercalls, keeping track of ELF payloads, and the basic operations: - query which payloads exist, - query for specific payloads, - check*1, apply*1, replace*1, and unload payloads. *1: Which of course in this patch are nops. The functionality is disabled on ARM until all arch components are implemented. Also by default it is disabled until the implementation is in place. We also use recursive spinlocks to so that the find_payload function does not need to have a 'lock' and 'non-lock' variant. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com> Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Reviewed-by: Jan Beulich <jbeulich@suse.com> Release-acked-by: Wei Liu <wei.liu2@citrix.com>