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[Qemu-devel] [PATCH v2 0/4] dataplane: use more of the generic virtio da
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH v2 0/4] dataplane: use more of the generic virtio data structures, drop hostmem |
Date: |
Tue, 10 Dec 2013 13:26:57 +0100 |
Now that the memory API is thread-safe, we can use it in
virtio-blk-dataplane and replace hostmem.[ch]. This series does this,
and also changes the vring API to use VirtQueueElement (with an eye
towards migration). With this change, virtio-blk-dataplane is also safe
against memory hot-unplug.
The next step would be to replace memory_region_find with
address_space_{map,unmap}, which handle dirtying of memory correctly.
However these APIs are not thread-safe yet, and neither is the handling
of dirty memory (Juan's patches may be a start here).
Also, the usage of iov_discard_{front,back} may cause some complication
when we use address_space_{map,unmap}. We may have to change a bit the
logic in virtio-blk-dataplane to switch to address_space_{map,unmap}.
v1->v2: introduce vring_free_element
Paolo Bonzini (4):
vring: create a common function to parse descriptors
vring: factor common code for error exits
dataplane: change vring API to use VirtQueueElement
dataplane: replace hostmem with memory_region_find
hw/block/dataplane/virtio-blk.c | 86 +++++-------
hw/virtio/dataplane/Makefile.objs | 2 +-
hw/virtio/dataplane/hostmem.c | 183 ------------------------
hw/virtio/dataplane/vring.c | 253 ++++++++++++++++++++++------------
include/hw/virtio/dataplane/hostmem.h | 58 --------
include/hw/virtio/dataplane/vring.h | 10 +-
6 files changed, 203 insertions(+), 389 deletions(-)
delete mode 100644 hw/virtio/dataplane/hostmem.c
delete mode 100644 include/hw/virtio/dataplane/hostmem.h
--
1.8.3.1
- [Qemu-devel] [PATCH v2 0/4] dataplane: use more of the generic virtio data structures, drop hostmem,
Paolo Bonzini <=
- [Qemu-devel] [PATCH v2 1/4] vring: create a common function to parse descriptors, Paolo Bonzini, 2013/12/10
- [Qemu-devel] [PATCH v2 4/4] dataplane: replace hostmem with memory_region_find, Paolo Bonzini, 2013/12/10
- [Qemu-devel] [PATCH v2 3/4] dataplane: change vring API to use VirtQueueElement, Paolo Bonzini, 2013/12/10
- [Qemu-devel] [PATCH v2 2/4] vring: factor common code for error exits, Paolo Bonzini, 2013/12/10
- Re: [Qemu-devel] [PATCH v2 0/4] dataplane: use more of the generic virtio data structures, drop hostmem, Stefan Hajnoczi, 2013/12/11
- Re: [Qemu-devel] [PATCH v2 0/4] dataplane: use more of the generic virtio data structures, drop hostmem, Stefan Hajnoczi, 2013/12/16