On 7/20/2016 11:25 PM, Timothy Sipples wrote:
To my knowledge, no. zIIP exploitation sometimes makes technical sense, and sometimes it doesn't. Even within the same general product category. Subject to periodic review as technologies change and evolve.
Assuming they're constrained by the same "Enclave SRB Only" restriction placed upon ISV zIIP exploiters, then a lot depends on how many task mode-only system services are being invoked by the code. Switching back and forth from task to SRB mode is expensive -- not just because of the extra path length, but also because of cache considerations.
They probably don't want to call E15/E35 exits in SRB mode, but it seems like they should be able to load the data in task mode, sort the data in SRB mode, and then write the data back out in task mode.
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