Re: [PATCH v2 0/4] alpha: stack fixes

[Magnus Lindholm]

Hi,

I've applied the patches to git 6.13.0-09954-g590a41bebc8c and the
system has been running for more than 24 hours without any problems,
I've generated some system load with building kernels and unpacking
large tar.xz files. The patch series seems to have fixed the
rcu-related issues with network interface renaming as well as the
kernel module unload. I'm now also running tests with memory
compaction enabled (CONFIG_COMPACTION). This used to cause seemingly
random segmentation faults when enabled on alpha. So far, memory
compaction seems to work with the patched kernel. With a little luck
the issues seen with memory compaction on alpha were related to stack
alignment problems as well.

In any case, very impressive work with putting together these patches,
this bodes well for the future for linux on alpha!

Regards

Magnus Lindholm

On Sun, Feb 2, 2025 at 12:13 AM Michael Cree <mcree@xxxxxxxxxxxx> wrote:
>
> On Sat, Feb 01, 2025 at 10:46:43AM +0100, John Paul Adrian Glaubitz wrote:
> > Hi Ivan,
> >
> > On Fri, 2025-01-31 at 11:41 +0100, Ivan Kokshaysky wrote:
> > > This series fixes oopses on Alpha/SMP observed since kernel v6.9. [1]
> > > Thanks to Magnus Lindholm for identifying that remarkably longstanding
> > > bug.
> > >
> >
> > Thanks, I'm testing the v2 series of the patches now.
> >
> > Adrian
>
> I've been running the patches on the 6.12.11 kernel for over 24 hours
> now.  Going very well and, in particular, I would like to note that:
>
> The thread-test in the pixman package which has been failing for over
> year 10 years on real Alpha hardware now passes!
>
> I have now successfully built guile-3.0 with threading support!
> Previously guile would lock up on Alpha if threading support was
> enabled.
>
> So there are some very long-standing bugs seen in user space that are
> fixed by this patch series.
>
> Cheers,
> Michael.