| commit | d3d1a406127f7da482eafbdc871c120c2770bb91 | |
| author | Cédric Le Goater <clg@redhat.com> | |
| Mon, 7 Nov 2022 16:13:49 +0000 (7 17:13 +0100) | ||
| committer | Thomas Huth <thuth@redhat.com> | |
| Tue, 8 Nov 2022 09:11:02 +0000 (8 10:11 +0100) | ||
| tree | 10bebc9e5fc43fca7d39bddd2e03d1965d88e9ec | treesnapshot (tar.gz zip) |
| parent | 57702891376d4636b5eab4a89145152a0342c987 | commitdiff |
s390x/s390-virtio-ccw: Switch off zPCI enhancements on older machines
zPCI enhancement features (interpretation and forward assist) were
recently introduced to improve performance on PCI passthrough devices.
To maintain the same behaviour on older Z machines, deactivate the
features with the associated properties.
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20221107161349.1032730-3-clg@kaod.org>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
zPCI enhancement features (interpretation and forward assist) were
recently introduced to improve performance on PCI passthrough devices.
To maintain the same behaviour on older Z machines, deactivate the
features with the associated properties.
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20221107161349.1032730-3-clg@kaod.org>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
| hw/s390x/s390-virtio-ccw.c | diffblobblamehistory |