Secure storage query and donation

A system comprising:

• a memory;
• and
• a secure interface control of a processing unit configured to perform a plurality of operations comprising:
• receiving a query, from an untrusted entity, for an amount of storage in the memory to be donated to the secure interface control;
• determining the amount of storage to be donated based on a plurality of secure entities supported by the secure interface control as a plurality of predetermined values;
• returning a response to the query indicative of the amount of storage as a response to the query;
• receiving a donation of storage from the untrusted entity for use by the secure interface control based on the response to the query and a command sequence received from the untrusted entity;
• and
• verifying the command sequence and a completion status of interactions between the untrusted entity and the secure interface control.

A computer program product comprising a computer readable storage medium, the computer readable storage medium comprising computer executable instructions, which when executed by a secure interface control of a processing unit causes the processing unit to perform a method comprising:

• receiving a query, from an untrusted entity, for an amount of storage in memory to be donated to the secure interface control;
• determining the amount of storage to be donated based on a plurality of secure entities supported by the secure interface control as a plurality of predetermined values;
• returning a response to the query indicative of the amount of storage as a response to the query;
• receiving a donation of storage from the untrusted entity for use by the secure interface control based on the response to the query and a command sequence received from the untrusted entity;
• and
• verifying the command sequence and a completion status of interactions between the untrusted entity and the secure interface control.