Re: [Xen-devel] preparations for 4.9.2 and 4.7.5

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Mon, 12 Mar 2018, Julien Grall wrote:
> On 12/03/18 10:24, Julien Grall wrote:
> > Hi,
> > 
> > On 11/03/18 20:48, Stefano Stabellini wrote:
> > > On Wed, 7 Mar 2018, Jan Beulich wrote:
> > > > > > > On 06.03.18 at 20:24, <sstabellini@xxxxxxxxxx> wrote:
> > > > > On Tue, 6 Mar 2018, Jan Beulich wrote:
> > > > > > these stable releases should go out before the end of the month.
> > > > > > Please point out backport candidates you find missing from the
> > > > > > respective staging branches, but which you consider relevant.
> > > > > > Please note that 4.7.5 is expected to be the last xenproject.org
> > > > > > managed release from its branch.
> > > > > 
> > > > > I am waiting for master to pass Julien's PSCI 1.1 series, then I
> > > > > intend
> > > > > to backport it to all stable trees (commits from
> > > > > f30b93b42b7137654a69676a61620f763c4ad3b3 to
> > > > > cd8b749282475caef095ea2f339a01d1ff9714ae).
> > > > > 
> > > > > Backports to older trees might be difficult.
> > > > > 
> > > > > Given your stable release plan, do you suggest I should start the
> > > > > backports now, even if master has not passed yet, or wait?
> > > > 
> > > > There have been a lot of minor issues lately keeping pushes from
> > > > happening on master, so if the commits above have not been
> > > > pushed just because of such a glitch, I'd be fine with them being
> > > > backported right away. If, however, there's any doubt, then I'd
> > > > prefer if you waited. But in the end on the ARM side you know
> > > > better than me what's best.
> > > Master hasn't passed yet, so no backports of the ARM64 Spectre
> > > mitigation for the moment.
> > 
> > I really don't like the idea to ship 4.9.2 and 4.7.5 with broken arm64
> > spectre patches. This is indeed the case today as the previous series was
> > based on early discussion.
> > 
> > But unstable is blocked on amd64 patches. None of the arm64 spectre 
> 
> ^ "amd64 tests".
> 
> > series touch common code, so I am not sure what prevents us to backport
> > them.
 
After looking at the test results, which are good for arm, and
considering that master hasn't passed yet after 2 more days, I agree
with Julien: I think we should not release 4.9.2 and 4.7.5 without the
arm64 spectre patches. At this point, I'll proceed to backport the
patches now.

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