a.out: Stop building a.out/osf1 support on alpha and m68k

There has been repeated discussion on removing a.out support, the most
recent was[1].  Having read through a bunch of the discussion it looks
like no one has see any reason why we need to keep a.out support.

The m68k maintainer has even come out in favor of removing a.out
support[2].

At a practical level with only two rarely used architectures building
a.out support, it gets increasingly hard to test and to care about.
Which means the code will almost certainly bit-rot.

Let's see if anyone cares about a.out support on the last two
architectures that build it, by disabling the build of the support in
Kconfig.  If anyone cares, this can be easily reverted, and we can then
have a discussion about what it is going to take to support a.out
binaries in the long term.

[1] https://lkml.kernel.org/r/20220113160115.5375-1-bp@alien8.de
[2] https://lkml.kernel.org/r/CAMuHMdUbTNNr16YY1TFe=-uRLjg6yGzgw_RqtAFpyhnOMM5Pvw@mail.gmail.com

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: linux-alpha@vger.kernel.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/87ilsmdhb5.fsf_-_@email.froward.int.ebiederm.org
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/lkml/CAMuHMdVLyu6LNONJa1QcMGv__bWSCRvVq9haD7=fOm1k5O3Pnw@mail.gmail.com

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 4e87783c90ad708339a3a869adfa81d75615b27b..14c97acea351c7bd142e5254d46c282bd7d96263 100644 (file)
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -12,7 +12,6 @@ config ALPHA
        select FORCE_PCI if !ALPHA_JENSEN
        select PCI_DOMAINS if PCI
        select PCI_SYSCALL if PCI
-       select HAVE_AOUT
        select HAVE_ASM_MODVERSIONS
        select HAVE_PCSPKR_PLATFORM
        select HAVE_PERF_EVENTS

diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 936e1803c7c7d3cb278e33b912fc7009e6b551c4..268b3860d40db63aa0abfad732a4429209f6043b 100644 (file)
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -17,7 +17,6 @@ config M68K
        select GENERIC_CPU_DEVICES
        select GENERIC_IOMAP
        select GENERIC_IRQ_SHOW
-       select HAVE_AOUT if MMU
        select HAVE_ASM_MODVERSIONS
        select HAVE_DEBUG_BUGVERBOSE
        select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED