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Re: [Qemu-devel] target-ppc: gdbstub breakpoints get stuck in an infinit
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From: |
David Gibson |
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Subject: |
Re: [Qemu-devel] target-ppc: gdbstub breakpoints get stuck in an infinite loop on next/continue |
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Date: |
Mon, 24 Oct 2016 12:00:55 +1100 |
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User-agent: |
Mutt/1.7.1 (2016-10-04) |
On Sat, Oct 22, 2016 at 09:22:45AM +0100, Mark Cave-Ayland wrote:
> On 21/10/16 23:02, Benjamin Herrenschmidt wrote:
>
> > On Fri, 2016-10-21 at 15:18 +0100, Mark Cave-Ayland wrote:
> >>
> >> bd6fefe71cec5a0c7d2be4ac96307f25db56abf9 is the first bad commit
> >> commit bd6fefe71cec5a0c7d2be4ac96307f25db56abf9
> >> Author: Benjamin Herrenschmidt <address@hidden>
> >> Date: Wed Jul 27 16:56:32 2016 +1000
> >>
> >> ppc: Make tlb_fill() use new exception helper
> >>
> >> Signed-off-by: Benjamin Herrenschmidt <address@hidden>
> >> Signed-off-by: David Gibson <address@hidden>
> >>
> >> :040000 040000 3494b2d68eef71c8f7c7d4e57c5ff715146028b2
> >> 00849bf5889d8ee5b5ce633122b7aedf4a734372 M linux-user
> >> :040000 040000 32b1a8078a44c44e6bfd2184061b6da553cfc821
> >> 58afefec7a9fc5380fb408758a11dbe749010b97 M target-ppc
> >
> > Hrm, that patch does a lot more that the subject (and lack of cset
> > comment) implies. I wonder if it got some rebase damage here.
>
> Indeed, it looks like extra changes were squashed into that single patch
> between these two pull requests:
>
> 6th September:
> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg00887.html
>
> 7th September:
> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg01465.html
Crap. Yeah, looks like a screwed up a rebase.
> > In the meantime, look at 24a2d2ac2cfbb699cab216aaf118c8503f22817c
> > " ppc: Fix single step with gdb stub" in my wip branch, see if that
> > helps.
>
> Yes it does - I've cherry-picked this onto master and I can confirm that
> it fixes the gdbstub issues I was seeing here.
>
> David, any chance we can we get this queued into your ppc-for-2.8 branch?
Done.
Ben, does it look like the other extraneous changes in bd6fefe are at
least correct, apart from being in the wrong patch?
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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