On 13/10/2017 11:45, Thomas Huth wrote: > On 12.10.2017 10:07, Laurent Vivier wrote: >> Check if we can set the xive server and priority, and >> check we get values that have been set. >> Check we disable/enable interrupts. >> >> This patch also increases NR_CPUS from 8 to 16 >> (maximum for KVM on POWER9, POWER8 allows 96) >> >> Signed-off-by: Laurent Vivier <lvivier@xxxxxxxxxx> >> --- >> Note: I send this as an RFC, because even if this test works well with >> TCG and POWER8 KVM hosts, it detects some problems with POWER9 KVM hosts > > What kind of errors does it detect? Are they expected due to the > different interrupt controllers? > [I cc' Sam as he already did a fix for this part in the kernel] I have two kinds of error: - "xics: get-xive: irq #4351, expected cpu 15 prio 255, had cpu 0 prio 255", Priority 255 is set to disable the IRQs, I don't think it's really a problem at this level, it could be only cosmetic, - "xics: int-on: irq #4351, ret = -3", but here it becomes more serious: as the IRQ server has been lost, it seems we are not able to re-enable the interrupt. I have no access to a POWER9 host to debug this at the kernel level for the moment, so I can't do more. Thanks, Laurent
