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Re: [PATCH v5] target/s390x/kvm: Enable adapter interruption suppression
Re: [PATCH v5] target/s390x/kvm: Enable adapter interruption suppression again
Wed, 22 Jan 2020 17:48:51 +0100
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.
> target/s390x/kvm.c | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)