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Re: [Qemu-devel] [PATCH v5 17/17] migration: Flush receive queue
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [PATCH v5 17/17] migration: Flush receive queue |
Date: |
Fri, 21 Jul 2017 14:03:38 +0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Mon, Jul 17, 2017 at 03:42:38PM +0200, Juan Quintela wrote:
> Each time that we sync the bitmap, it is a possiblity that we receive
> a page that is being processed by a different thread. We fix this
> problem just making sure that we wait for all receiving threads to
> finish its work before we procedeed with the next stage.
>
> We are low on page flags, so we use a combination that is not valid to
> emit that message: MULTIFD_PAGE and COMPRESSED.
Btw, would it be possible that we introduce a new QEMU_VM_COMMAND for
this flush operation? Like: MIG_CMD_MULTIFD_FLUSH?
--
Peter Xu
- [Qemu-devel] [PATCH v5 14/17] migration: Delay the start of reception on main channel, (continued)