Re: Xen 4.10 breakage with buster (was Re: [xen-4.10-testing test] 151033: regressions - trouble: blocked/fail/pass/starved) [and 1 more messages]

[Ian Jackson <ian.jackson@xxxxxxxxxx>]

Andrew Cooper writes ("Re: Xen 4.10 breakage with buster (was Re: 
[xen-4.10-testing test] 151033: regressions - trouble: 
blocked/fail/pass/starved)"):
> On 12/06/2020 17:47, Ian Jackson wrote:
> > Ian Jackson writes ("Xen 4.10 breakage with buster (was Re: 
> > [xen-4.10-testing test] 151033: regressions - trouble: 
> > blocked/fail/pass/starved)"):
> > I think that's
> >
> >    lz4: fix system halt at boot kernel on x86_64
> >    14b62ab3e5a79816edfc6dd3afce1bb68c106ac5
> >    master commit: 5d90ff79542ab9c6eebe5c315c68c196bcf353b9
> >
> >    lz4: refine commit 9143a6c55ef7 for the 64-bit case
> >    6561994b87af3e9cd28ee99c42e8b2697621687d
> >    master commit: 2d7572cdfa4d481c1ca246aa1ce5239ccae7eb59
> >
> > Anyone have any objection to me sending those to 4.10 and maybe 4.9 ?
> > They apply cleanly in both cases.
> 
> Ah - you found them faster than I did.  Yes - these were the ones I was
> thinking of.
> 
> No objections.

Thanks.

Jan Beulich writes ("Re: Xen 4.10 breakage with buster (was Re: 
[xen-4.10-testing test] 151033: regressions - trouble: 
blocked/fail/pass/starved)"):
> Seeing the other pieces that have been put onto these old branches
> recently, it's probably fine to add the two ones here as well. In
> general, as mentioned before, I view it as wrong to put non-
> security fixes onto the security-only branches.

Yes.  I can see why this is not ideal.

> But since I can see why changes to address newer compilers' changed
> behavior may be wanted/needed, I guess the ones here fall into a
> pretty similar group.

However, as a practical matter, I think it is probably a good idea to
enable (i) us to test these branches with an up-to-date CI setup (ii)
people to be able to build it with modern compilers.

So I think in general I am saying that narrow and low-risk build fixes
are reasonable backport candidates.

Thanks to both for your opinions.  I have pushed those two to 4.10 and
will see how things go.  I may send them to 4.9 too.

Ian.