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author | Stefan Hajnoczi <stefanha@redhat.com> | 2012-11-20 10:30:08 +0100 |
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committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-01-02 15:50:32 +0100 |
commit | 185ecf40e3589fc2717b0856ee1df05dd63a46dd (patch) | |
tree | feee51d156bbb7576bd26de6f2dc8ccff96c6061 /hw/Makefile.objs | |
parent | 583f6e7bbd24b31f7eecd5c21ba0a5a5a77f52f1 (diff) | |
download | qemu-185ecf40e3589fc2717b0856ee1df05dd63a46dd.zip qemu-185ecf40e3589fc2717b0856ee1df05dd63a46dd.tar.gz qemu-185ecf40e3589fc2717b0856ee1df05dd63a46dd.tar.bz2 |
dataplane: add host memory mapping code
The data plane thread needs to map guest physical addresses to host
pointers. Normally this is done with cpu_physical_memory_map() but the
function assumes the global mutex is held. The data plane thread does
not touch the global mutex and therefore needs a thread-safe memory
mapping mechanism.
Hostmem registers a MemoryListener similar to how vhost collects and
pushes memory region information into the kernel. There is a
fine-grained lock on the regions list which is held during lookup and
when installing a new regions list.
When the physical memory map changes the MemoryListener callbacks are
invoked. They build up a new list of memory regions which is finally
installed when the list has been completed.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/Makefile.objs')
-rw-r--r-- | hw/Makefile.objs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/Makefile.objs b/hw/Makefile.objs index d75f2f0..5ac4913 100644 --- a/hw/Makefile.objs +++ b/hw/Makefile.objs @@ -1,4 +1,4 @@ -common-obj-y = usb/ ide/ pci/ +common-obj-y = usb/ ide/ pci/ dataplane/ common-obj-y += loader.o common-obj-$(CONFIG_VIRTIO) += virtio-console.o common-obj-$(CONFIG_VIRTIO) += virtio-rng.o |