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Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qem
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu |
Date: |
Sat, 7 Nov 2009 03:44:34 +0000 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Anthony Liguori wrote:
> Jamie Lokier wrote:
> >Avi Kivity wrote:
> >
> >>>I know this has been discussed before, but isn't this why there are
> >>>things like vfork()?
> >>>
> >>vfork() doesn't work with threads - it requires that the calling process
> >>be halted until exec() is called.
> >>
> >
> >On Linux (NPTL), vfork() is good for this. It only halts the calling
> >thread. Other threads continue to run, and when the vfork'd thread
> >called exec*(), it doesn't affect the other threads. Of course this
> >behaviour isn't portable, but then again, neither is KVM.
> >
> Yup, see attached program. Here's the output which confirms this is the
> case.
Before assuming it, you might want to verify that it's the same on all
kernels which support KVM (including backports) and all versions of
Linux pthreads which might be used.
-- Jamie
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, (continued)
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Avi Kivity, 2009/11/05
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Avi Kivity, 2009/11/05
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Anthony Liguori, 2009/11/05
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Jamie Lokier, 2009/11/05
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Avi Kivity, 2009/11/06
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Jamie Lokier, 2009/11/06
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Anthony Liguori, 2009/11/06
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu,
Jamie Lokier <=
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Anthony Liguori, 2009/11/06
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Avi Kivity, 2009/11/07
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Avi Kivity, 2009/11/07
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Anthony Liguori, 2009/11/07
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Arnd Bergmann, 2009/11/07
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Anthony Liguori, 2009/11/07
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Avi Kivity, 2009/11/08
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Anthony Liguori, 2009/11/07
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Anthony Liguori, 2009/11/05
- Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu, Avi Kivity, 2009/11/06