On 2021-07-22 12:12, John Garry wrote: Hi John,
[...]
Your kernel log should show: [ 0.000000] GICv3: Pseudo-NMIs enabled using forced ICC_PMR_EL1 synchronisation
Unrelated, but you seem to be running with ICC_CTLR_EL3.PMHE set, which makes the overhead of pseudo-NMIs much higher than it should be (you take a DSB SY on each interrupt unmasking). If you are not using 1:N distribution of SPIs on the secure side, consider turning that off in your firmware. This should make NMIs slightly more pleasant to use. M. -- Jazz is not dead. It just smells funny... _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu