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Pawel Wieczorkiewicz
6047104c3c
Livepatch only tracks an entire payload applied/reverted state. But, with an option to supply the apply_payload() and/or revert_payload() functions as optional hooks, it becomes possible to intermix the execution of the original apply_payload()/revert_payload() functions with their dynamically supplied counterparts. It is important then to track the current state of every function being patched and prevent situations of unintentional double-apply or unapplied revert. To support that, it is necessary to extend public interface of the livepatch. The struct livepatch_func gets additional field holding the applied/reverted state marker. To reflect the livepatch payload ABI change, bump the version flag LIVEPATCH_PAYLOAD_VERSION up to 2. [And also update the top of the design document] Signed-off-by: Pawel Wieczorkiewicz <wipawel@amazon.de> Reviewed-by: Andra-Irina Paraschiv <andraprs@amazon.com> Reviewed-by: Bjoern Doebel <doebel@amazon.de> Reviewed-by: Martin Pohlack <mpohlack@amazon.de> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Julien Grall <julien.grall@arm.com> Reviewed-by: Ross Lagerwall <ross.lagerwall@citrix.com>
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