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Re: [Xen-devel] Xen 4.1.x security support

On 09/17/13 19:38, Joanna Rutkowska wrote:
> On 09/17/13 08:47, Jan Beulich wrote:
>>>>> On 17.09.13 at 00:01, Marek 
>>>>> Marczykowski-Górecki<marmarek@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>> was announced as the last 4.1.x release. Does it mean that further
>>> XSAs will not carry patches for 4.1?
>> That's the way I view it, but that doesn't mean it has to be that way.
> That would be rather unfortunate. E.g. we're planning to stick to Xen
> 4.1 for our Qubes R2 release. There are some problems with Xen 4.2 such
> as the GPLPV Windows drivers not working with it correctly.
> I could imagine that it should not be very costly for xen.org to
> backport each XSA patch to 4.1, should it?

And a somehow more general thought: what most people expect from
baremetal hypervisors, I think, is stability. Unlike the Linux kernel,
the Xen hypervisor does not need to support each and every device
invented on the planet, each and every possible filesystem, or
networking stack, etc. That's, in fact, (one of) the biggest advantage
of a hypervisor over a monolithic kernel. So, why, oh why, such a race
to keep bumping the major version over and over again?


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