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Re: Xen 4.4 updates - request for feedback



On Mon, 2018-10-29 at 15:56 +0100, Peter Dreuw wrote:
> Am 26.10.18 um 14:48 schrieb Ben Hutchings:
> > On Thu, 2018-10-25 at 11:32 +0200, Peter Dreuw wrote:
> > > Am 25.10.18 um 10:08 schrieb Peter Dreuw:
> > > may one point to make it clear, tho it might be obvious to most of you:
> > > 
> > > We can apply fixes to the original Xen 4.4 version and have done
> > > everything possible - without a fixed kernel, there is no mitigation of
> > > spectre/meltdown.
> > By "kernel", do you mean the Xen kernel or the guest kernel?  
> Both.
> > The Linux
> > kernel in jessie does have mitigations for Meltdown (amd64 only),
> > Spectre variants 1 and 2, and several other speculation issues.
> You are talking of the 4.9 kernel package, aren't you?
[...]

No.  Almost all the same mitigations are in the default Linux 3.16
kernel.  The major missing piece at the moment is L1TF mitigation for
KVM.

Ben.

-- 
Ben Hutchings
The Peter principle: In a hierarchy, every employee tends to rise to
their level of incompetence.


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