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Re: [PATCH v5] target/s390x/kvm: Enable adapter interruption suppression

From: Matthew Rosato
Subject: Re: [PATCH v5] target/s390x/kvm: Enable adapter interruption suppression again
Date: Wed, 22 Jan 2020 09:34:50 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0

On 1/22/20 5:33 AM, Thomas Huth wrote:
On 22/01/2020 11.29, Cornelia Huck wrote:
On Wed, 22 Jan 2020 11:14:37 +0100
Thomas Huth <address@hidden> wrote:

The AIS feature has been disabled late in the v2.10 development cycle since
there were some issues with migration (see commit 3f2d07b3b01ea61126b -
"s390x/ais: for 2.10 stable: disable ais facility"). We originally wanted
to enable it again for newer machine types, but apparently we forgot to do
this so far. Let's do it now for the machines that support proper CPU models.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1756946
Signed-off-by: Thomas Huth <address@hidden>
  v5: Use cpu_model_allowed() as suggested by David. Seems to work as far
      as I can test it without PCI cards, but ping-pong migration with
      "-cpu host" from/to an older version of QEMU is now not working
      anymore - but I think that's kind of expected since "-cpu host"
      is not migration-safe anyway.

Ok, so I'll wait for test results with pci cards before queuing this :)

Ok, Matthew, could you please test one more time?

Ran all of the same tests as before, looks good!

Tested-by: Matthew Rosato <address@hidden>

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