16 Feb
2017
16 Feb
'17
3:20 a.m.
Based on the seL4 manual it sounds like IRQControl caps only support one level of derivation. What is the reason for this restriction? We encountered a case where we wanted to hand out an IRQControl for a specific irq and then later revoke access, but we couldn't do it because the IRQControl for a specific irq is already a derived capability. -Andrew