From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: David Laight <David.Laight@ACULAB.COM>,
'Guenter Roeck' <linux@roeck-us.net>,
Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Kees Cook <keescook@chromium.org>,
linux-m68k <linux-m68k@lists.linux-m68k.org>
Subject: Re: Linux 6.8-rc6
Date: Thu, 29 Feb 2024 23:24:42 +0100 [thread overview]
Message-ID: <1b49206bdc0ac410421975aea6b8113d5156a2e1.camel@physik.fu-berlin.de> (raw)
In-Reply-To: <b4fa177d6fcc42deb7db0dc0f9d36fe2@AcuMS.aculab.com>
On Thu, 2024-02-29 at 22:19 +0000, David Laight wrote:
> ...
> > > > I suspect this may be caused by the test assuming that stack growth is
> > > > downward, but I don't really understand the test well enough to be sure.
> > > > I'll disable this set of tests for m68k going forward, so I am not going
> > > > to report the problem again in the future.
> > >
> > > On m68k, the stack does grow downward.
> >
> > Sorry, I meant to say upward, but apparently I was wrong.
>
> Maybe because m68k only has 2 byte alignment for 32 bit items.
> That causes grief in many places.
> Although kmalloc() returning a larger alignment would fix some
> of them without using much more memory?
We're actually planning to switch the default alignment in Gentoo and Debian on m68k
to 32 bits since a lot of upstream projects such as OpenJDK, Qt, LLVM, Firebird and
Mold and many more expect 32-bit alignment.
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer
`. `' Physicist
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
next prev parent reply other threads:[~2024-02-29 22:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-25 23:57 Linux 6.8-rc6 Linus Torvalds
2024-02-26 8:12 ` Build regressions/improvements in v6.8-rc6 Geert Uytterhoeven
2024-02-26 8:41 ` Geert Uytterhoeven
2024-02-26 9:14 ` Linux 6.8-rc6 Luna Jernberg
2024-02-26 17:51 ` Guenter Roeck
2024-02-27 7:41 ` Geert Uytterhoeven
2024-02-27 14:17 ` Guenter Roeck
2024-02-29 22:19 ` David Laight
2024-02-29 22:24 ` John Paul Adrian Glaubitz [this message]
2024-02-29 23:07 ` Andreas Schwab
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