Re: [Qemu-devel] [PATCH 0/2] dataplane: RCU dirty memory bitmap for safe RAM hotplug

[Stefan Hajnoczi <stefanha@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1011 bytes --]

On Mon, Jan 25, 2016 at 01:33:19PM +0000, Stefan Hajnoczi wrote:
> Make RAM hotplug play nicely with dataplane.  By RCU-protecting the dirty
> memory bitmap it is possible to hotplug RAM while other threads are dirtying
> guest RAM.
> 
> See Patch 1 for the meat of the code.  Patch 2 is just a fixup on top of
> Paolo's dataplane branch.
> 
> This series is based on: https://github.com/bonzini/qemu.git dataplane
> 
> Stefan Hajnoczi (2):
>   memory: RCU ram_list.dirty_memory[] for safe RAM hotplug
>   virtio-blk: drop unused migration.h include
> 
>  exec.c                  |  73 +++++++++++++++----
>  hw/block/virtio-blk.c   |   1 -
>  include/exec/ram_addr.h | 189 ++++++++++++++++++++++++++++++++++++++++++------
>  migration/ram.c         |   4 -
>  4 files changed, 223 insertions(+), 44 deletions(-)

Paolo, will you take this through your tree/dataplane branch?

I think that would work well since your vring.c removal relies on the
memory API being thread-safe.

Stefan

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 473 bytes --]