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Re: [Qemu-devel] Re: [PATCH 0/4] qemu: TAP filtering support
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] Re: [PATCH 0/4] qemu: TAP filtering support |
Date: |
Thu, 12 Feb 2009 19:57:30 +0000 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Alex Williamson wrote:
> TUNSETTXFITLER has only existed since 2.6.26, so the ioctl will fail on
> anything older and it will be disabled anyway. The patch will fix .29
> and should get rolled into .28 stable, so we're looking at an exposure
> of 2 kernel releases. Unfortunately a few community distros went out on
> those kernels, so perhaps the prudent approach would be to make the
> default disabled until we're a few releases beyond. I don't know any
> way you could detect it outside of ugly parsing of uname -r. Thanks,
I would parse uname -r - it's not hard, Linux versions have always
matched %d.%d.%d, and map in a standard way to a 32-bit integer for
easy comparisons.
A few QEMU releases later, someone will run the new version on a
2.6.26 to 2.6.28 host.
It's quite usual in my experience to run a QEMU that's much newer than
the corresponding host kernel, because upgrading host is a big deal
(if you only have one or two) due to being heavily used, whereas
upgrading QEMU/KVM is much easier as you can do it one VM guest at a time.
-- Jamie
- Re: [Qemu-devel] [PATCH 3/4] qemu:virtio-net: Add support for qemu_vlan_rxfilter, (continued)
[Qemu-devel] [PATCH 4/4] qemu:e1000: Add support for qemu_vlan_rxfilter, Alex Williamson, 2009/02/10
[Qemu-devel] Re: [PATCH 0/4] qemu: TAP filtering support, Mark McLoughlin, 2009/02/11