From: Stefan Hajnoczi <stefanha@gmail.com>
To: Liu Ping Fan <qemulist@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
Anthony Liguori <aliguori@us.ibm.com>,
Jan Kiszka <jan.kiszka@siemens.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel@nongnu.org,
Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion
Date: Thu, 11 Apr 2013 12:20:32 +0200 [thread overview]
Message-ID: <20130411102032.GE9165@stefanha-thinkpad.redhat.com> (raw)
In-Reply-To: <1364804434-7980-5-git-send-email-qemulist@gmail.com>
On Mon, Apr 01, 2013 at 04:20:33PM +0800, Liu Ping Fan wrote:
> From: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
>
> virtio-blk will reference to RAM's memoryRegion when the req has been
> done. So we can avoid to call bdrv_drain_all() when RAM hot unplug.
How does the hot unplug operation work without bdrv_drain_all()? In
other words, how do we safely remove a MemoryRegion and wait for it to
become unreferenced?
Stefan
next prev parent reply other threads:[~2013-04-11 10:20 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-01 8:20 [Qemu-devel] [PATCH 0/5] proposal to make hostmem listener RAM unplug safe Liu Ping Fan
2013-04-01 8:20 ` [Qemu-devel] [PATCH 1/5] memory: add ref/unref interface for MemroyRegionOps Liu Ping Fan
2013-04-11 9:49 ` Stefan Hajnoczi
2013-04-12 4:12 ` liu ping fan
2013-04-01 8:20 ` [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe Liu Ping Fan
2013-04-02 6:11 ` li guang
2013-04-11 10:09 ` Paolo Bonzini
2013-04-12 6:46 ` liu ping fan
2013-04-12 8:21 ` Stefan Hajnoczi
2013-04-11 10:11 ` Stefan Hajnoczi
2013-04-11 10:26 ` Paolo Bonzini
2013-04-12 3:55 ` liu ping fan
2013-04-12 8:38 ` Stefan Hajnoczi
2013-04-12 10:03 ` Paolo Bonzini
2013-04-15 1:42 ` liu ping fan
2013-04-15 6:38 ` Paolo Bonzini
2013-04-01 8:20 ` [Qemu-devel] [PATCH 3/5] vring: use hostmem's RAM safe api Liu Ping Fan
2013-04-11 10:15 ` Stefan Hajnoczi
2013-04-12 4:49 ` liu ping fan
2013-04-12 8:41 ` Stefan Hajnoczi
2013-04-01 8:20 ` [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion Liu Ping Fan
2013-04-02 5:58 ` li guang
2013-04-12 4:44 ` liu ping fan
2013-04-11 10:20 ` Stefan Hajnoczi [this message]
2013-04-12 4:48 ` liu ping fan
2013-04-12 8:45 ` Stefan Hajnoczi
2013-04-12 9:05 ` liu ping fan
2013-04-16 7:57 ` Stefan Hajnoczi
2013-04-16 8:12 ` Paolo Bonzini
2013-04-01 8:20 ` [Qemu-devel] [PATCH 5/5] hostmem: init/finalize hostmem listener Liu Ping Fan
2013-04-11 10:02 ` Paolo Bonzini
2013-04-11 12:08 ` liu ping fan
2013-04-11 13:14 ` Paolo Bonzini
2013-06-13 4:38 ` [Qemu-devel] about atexit() (was: [PATCH 5/5] hostmem: init/finalize hostmem listener) Amos Kong
2013-06-13 8:51 ` liu ping fan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130411102032.GE9165@stefanha-thinkpad.redhat.com \
--to=stefanha@gmail.com \
--cc=aliguori@us.ibm.com \
--cc=jan.kiszka@siemens.com \
--cc=mtosatti@redhat.com \
--cc=pbonzini@redhat.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
--cc=qemulist@gmail.com \
--cc=vasilis.liaskovitis@profitbricks.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).