Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Mon, 2 May 2022 11:10:25 +0200 | Subject | Re: [PATCH] mapletree-vs-khugepaged |
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Hi Liam,
On Sat, Apr 30, 2022 at 1:58 AM Liam Howlett <liam.howlett@oracle.com> wrote: > * Heiko Carstens <hca@linux.ibm.com> [220429 09:19]: > > On Fri, Apr 29, 2022 at 01:01:53PM +0000, Liam Howlett wrote: > > > * Heiko Carstens <hca@linux.ibm.com> [220429 08:10]: > > > > On Thu, Apr 28, 2022 at 10:20:40AM -0700, Guenter Roeck wrote: > > > > > On Wed, Apr 27, 2022 at 03:10:45PM -0700, Andrew Morton wrote: > > > > > > Fix mapletree for patch series "Make khugepaged collapse readonly FS THP > > > > > > more consistent", v3. > > > > > > > > > > > > Cc: Liam R. Howlett <Liam.Howlett@oracle.com> > > > > > > Signed-off-by: Andrew Morton <akpm@linux-foundation.org> > > > > > > > > > > This patch causes all my sparc64 boot tests to fail. Bisect and crash logs > > > > > attached. > > > > > > > > > > Guenter > > ... > > > > > > > > FWIW, same on s390 - linux-next is completely broken. Note: I didn't > > > > bisect, but given that the call trace, and even the failing address > > > > match, I'm quite confident it is the same reason. > > > > > > This is worth a lot to me. Thanks for the report and the testing. > > > > Not sure if it is of any relevance, and you are probably aware if it > > anyway, but both sparc64 and s390 are big endian; and there was no > > report from little endian architectures yet. > > I was aware they are big endian, but thanks - the more info the better. > sparc64 is technically bi-endian but I think everyone runs it in big
Sparc64 is big-endian. It has support for accessing little endian data in memory, but that's merely an optimization.
> endian mode? Is alpha the same? There was a report of alpha having
Alpha is little-endian.
> issues too. m68k is also big endian - but also nommu, so that makes > testing difficult.
M68k exists with and without MMU.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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