qemu/hw/virtio
Alexey Kardashevskiy a93c8d828a 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>
2017-10-15 05:54:44 +03:00
..
Makefile.objs stubs: move vhost stubs to stubs/vhost.o 2017-01-16 17:52:35 +01:00
trace-events trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
vhost-backend.c vhost: fix a memory leak 2017-08-02 00:13:25 +03:00
vhost-stub.c stubs: move vhost stubs to stubs/vhost.o 2017-01-16 17:52:35 +01:00
vhost-user.c vhost-user: fix legacy cross-endian configurations 2017-08-02 00:13:25 +03:00
vhost-vsock.c migration: pre_save return int 2017-09-27 11:35:59 +01:00
vhost.c virtio/vhost: reset dev->log after syncing 2017-10-15 05:54:41 +03:00
virtio-balloon.c Convert single line fprintf(.../n) to warn_report() 2017-09-19 14:09:34 +02:00
virtio-bus.c virtio: Fix error handling in virtio_bus_device_plugged 2017-03-22 17:54:32 +02:00
virtio-crypto-pci.c virtio-crypto: Convert to DEFINE_PROP_LINK 2017-07-14 12:04:43 +02:00
virtio-crypto.c virtio-crypto: Convert to DEFINE_PROP_LINK 2017-07-14 12:04:43 +02:00
virtio-mmio.c virtio-mmio: switch to linux headers 2017-01-18 22:59:53 +02:00
virtio-pci.c virtio-pci: Replace modern_as with direct access to modern_bar 2017-10-15 05:54:44 +03:00
virtio-pci.h virtio-pci: Replace modern_as with direct access to modern_bar 2017-10-15 05:54:44 +03:00
virtio-rng.c virtio-rng: Convert to DEFINE_PROP_LINK 2017-07-14 12:04:42 +02:00
virtio.c virtio: fix descriptor counting in virtqueue_pop 2017-10-15 05:54:44 +03:00