Hi,

On 4/28/21 4:36 PM, Marc Zyngier wrote:

On Wed, 28 Apr 2021 15:00:15 +0100,
Alexandru Elisei [off-list ref] wrote:

quoted

I interpret that as that an INVALL guarantees that a change is
visible, but it the change can become visible even without the
INVALL.

Yes. Expecting the LPI to be delivered or not in the absence of an
invalidate when its configuration has been altered is wrong. The
architecture doesn't guarantee anything of the sort.

quoted

The test relies on the fact that changes to the LPI tables are not
visible *under KVM* until the INVALL command, but that's not
necessarily the case on real hardware. To match the spec, I think
the test "dev2/eventid=20 still does not trigger any LPI" should be
removed and the stats reset should take place before the
configuration for LPI 8195 is set to the default.

Yes I do agree with Alexandru and Marc after another reading of the
spec. I initially thought the INVALL was the gate keeper for the new
config but that sounds wrong. This test shall be removed then.

Eric

If that's what the test expects (I haven't tried to investigate), it
should be dropped completely, rather than trying to sidestep it for
TCG.

Thanks,

	M.

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