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Re: [Qemu-devel] [PATCH 0/2] dataplane: RCU dirty memory bitmap for safe
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH 0/2] dataplane: RCU dirty memory bitmap for safe RAM hotplug |
Date: |
Thu, 28 Jan 2016 10:40:07 +0000 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
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
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