Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit signal context

[Stas Sergeev]

18.10.2015 19:12, Andy Lutomirski ÐÐÑÐÑ:
> On Sun, Oct 18, 2015 at 6:36 AM, Stas Sergeev <stsp@xxxxxxx> wrote:
> > 15.10.2015 00:41, Andy Lutomirski ÐÐÑÐÑ:
> > > > If this my
> > > > understanding is correct and the flag is just an indication rather
> > > > than a requested action, perhaps the name should be different,
> > > > e.g. UC_SIG_FROM_32BIT or the like?
> > > > Anyway, this is minor. :)
> > > > I'll try to test the patch within a few days, thanks for you time!
> > > No problem.  Thanks for being willing to test!
> > Hello Andy, I am unlucky at testing this.
> > dosemu doesn't even start for me on the git kernels.
> > After a half day of debugging, it seems the kernel forgets
> > to fill in the "err" field in the sigcontext struct when
> > page fault occurs. That confuses the dosemu's instruction
> > decoder.
> > Does this ring any bells?
> No, but I can reproduce it on some kernels.  Let me see if I can fix it, too.
Thanks!
You should really consider adding dosemu as your test-case.
It feels very unhappy on all recent kernels. I was getting hard
lock-ups under different circumstances (when starting windows,
for example). But fedora-packaged kernels are quite good, as of
yet. I fear the problems will soon populate to them too.
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