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Re: [Xen-devel] Xen 4.12 Development Update
- To: Juergen Gross <jgross@xxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 14 Jan 2019 10:52:43 +0000
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- Delivery-date: Mon, 14 Jan 2019 10:52:54 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 14/01/2019 10:13, Juergen Gross wrote:
> I have started to include the version number of series associated to each
> feature. Can each owner send an update on the version number if the series
> was posted upstream?
>
> = Projects =
>
> == Hypervisor ==
>
> * Improvements to domain creation (v2)
> - Andrew Cooper
There is not realistically going to be further work done here in the
4.12 timeframe.
The work so far has fixed a load of NULL pointer dereferences for blind
uses of d->vcpu[], but a number still remain for blind uses of
d->vcpu[0]. You can still crash Xen by issuing specific toolstack
hypercalls between createdomain and maxvcpus, but its now far harder
than in 4.11
> === x86 ===
>
> * Fixes to #DB injection
> - Andrew Cooper
Nor this. There is a monitoring interaction issue I haven't got around
to fixing yet, and I've subsequently discovered that the way we inject
debug exceptions on VT-x is broken. There is a specific passage in the
SDM which tells us not to do it the way we do, because otherwise we end
up with incorrect prioritisation of events when resuming the guest.
~Andrew
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