diff options
| author | Greg Kurz <groug@kaod.org> | 2021-04-07 16:35:01 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-05-14 10:26:18 -0400 |
| commit | c4f5dcc4360a02085a633fd7a90b7ac395ca1ba4 (patch) | |
| tree | 1f124f46fc3f24a77b27a39205297a64af47f6ec /scripts/clean-includes | |
| parent | 61fc57bfc464c3584bd7ab810c86833661f0188c (diff) | |
| download | qemu-c4f5dcc4360a02085a633fd7a90b7ac395ca1ba4.zip qemu-c4f5dcc4360a02085a633fd7a90b7ac395ca1ba4.tar.gz qemu-c4f5dcc4360a02085a633fd7a90b7ac395ca1ba4.tar.bz2 | |
virtio-scsi: Configure all host notifiers in a single MR transaction
This allows the virtio-scsi-pci device to batch the setup of all its
host notifiers. This significantly improves boot time of VMs with a
high number of vCPUs, e.g. from 6m5.563s down to 1m2.884s for a
pseries machine with 384 vCPUs.
Note that memory_region_transaction_commit() must be called before
virtio_bus_cleanup_host_notifier() because the latter might close
ioeventfds that the transaction still assumes to be around when it
commits.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210407143501.244343-5-groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'scripts/clean-includes')
0 files changed, 0 insertions, 0 deletions