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Re: [Qemu-devel] NBD TLS support in QEMU
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] NBD TLS support in QEMU |
Date: |
Fri, 5 Sep 2014 13:21:52 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Fri, Sep 05, 2014 at 12:02:18AM +0200, Wouter Verhelst wrote:
> [Cc: to nbd-general list added]
>
> On Wed, Sep 03, 2014 at 05:44:17PM +0100, Stefan Hajnoczi wrote:
> > Besides QEMU, the userspace NBD tools (http://nbd.sf.net/) can also be
> > extended to support TLS. In this case the kernel needs a localhost
> > socket and userspace handles TLS.
>
> That introduces a possibility for a deadlock, since now your network
> socket isn't on the PF_MEMALLOC-protected socket anymore, which will
> cause the kernel to throw away packets which are needed for your nbd
> connection, in hopes of clearing some memory.
Understood but there are plenty of use cases where this doesn't matter.
Stefan
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Re: [Qemu-devel] NBD TLS support in QEMU, Wouter Verhelst, 2014/09/04
Re: [Qemu-devel] NBD TLS support in QEMU, Wouter Verhelst, 2014/09/04
Re: [Qemu-devel] [libvirt] NBD TLS support in QEMU, Michal Privoznik, 2014/09/05
Re: [Qemu-devel] NBD TLS support in QEMU, Hani Benhabiles, 2014/09/05