| commit | ab5b3db5d711b290d63e954dc64647dd51cef962 | |
| author | Fam Zheng <famz@redhat.com> | |
| Fri, 13 Jun 2014 06:34:41 +0000 (13 14:34 +0800) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Wed, 18 Jun 2014 13:32:50 +0000 (18 15:32 +0200) | ||
| tree | b250b0591542b2dbdadbad252287e402b6956dd7 | treesnapshot (tar.gz zip) |
| parent | feca4ac18b7e0df7cdc6e791a7e98cc303feb890 | commitdiff |
memory: Don't call memory_region_update_coalesced_range if nothing changed
With huge number of PCI devices in the system (for example, 200
virtio-blk-pci), this unconditional call can slow down emulation of
irrelevant PCI operations drastically, such as a BAR update on a device
that has no coalescing region. So avoid it.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
With huge number of PCI devices in the system (for example, 200
virtio-blk-pci), this unconditional call can slow down emulation of
irrelevant PCI operations drastically, such as a BAR update on a device
that has no coalescing region. So avoid it.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| memory.c | diffblobblamehistory |