Re: [Xen-devel] 4.2 TODO / Release Plan

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

On Mon, Aug 6, 2012 at 9:58 AM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> hypervisor, nice to have:

* [BUG(?)] Under certain conditions, the p2m_pod_sweep code will stop
halfway through searching, causing a guest to crash even if there was
zeroed memory available.  This is NOT a regression from 4.1, and is a
very rare case, so probably shouldn't be a blocker.  (In fact, I'd be
open to the idea that it should wait until after the release to get
more testing.)

I can take this one.

> tools, nice to have:

* [BUG(?)] If domain 0 attempts to access a guests' memory before it
is finished being built, and it is being built in PoD mode, this may
cause the guest to crash.  Again, this is NOT a regression from 4.1.
Furthermore, it's only been reported (AIUI) by a customer of OpenSuSE;
so it shoudn't be a blocker.  (Again, I'd be open to the idea that it
should wait until after the release to get more testing.)

Jan, since you've got access to the system that reproduces it, do you
want to take this one?  I think it should just be a matter of moving
xc_domain_set_target() just before the while() loop in the domain
builder (but after xc_domain_populate_physmap_exact, I think), and
changing the loop to never allocate real memory in PoD mode.  I can do
it, but it will be longer before we can get it tested.

 -George

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