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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2017-10-09 14:19:41 +1100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-10-15 05:54:44 +0300 |
| commit | a93c8d828af186d9a6a1c915a1be8ba22fb89849 (patch) | |
| tree | d0a820de897ff22c0efcbafb77b0ddee460b5627 /hw/i386 | |
| parent | 37ef70be6af7e9f2a6f852c68f74bd98dac2664b (diff) | |
| download | qemu-a93c8d828af186d9a6a1c915a1be8ba22fb89849.tar.gz | |
virtio-pci: Replace modern_as with direct access to modern_bar
The modern bar is accessed now via yet another address space created just
for that purpose and it does not really need FlatView and dispatch tree
as it has a single memory region so it is just a waste of memory. Things
get even worse when there are dozens or hundreds of virtio-pci devices -
since these address spaces are global, changing any of them triggers
rebuilding all address spaces.
This replaces indirect accesses to the modern BAR with a simple lookup
and direct calls to memory_region_dispatch_read/write.
This is expected to save lots of memory at boot time after applying:
[Qemu-devel] [PULL 00/32] Misc changes for 2017-09-22
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/i386')
0 files changed, 0 insertions, 0 deletions