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ARM: mark IWMMXT as deprecated

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With no remaining users and support getting removed from future compilers,
there seems little point in keeping iwmmxt around much longer.

On the other hand, the iwmmxt support in the kernel rarely gets in the
way, so there is little cost, so set a removal date of early 2027 for
the moment. If anyone is still using this, it can be extended as long
there is binutils support.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2024-08-23 08:59:13 +00:00
parent e3c0bc30b1
commit 4486f02005
1 changed files with 11 additions and 3 deletions
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14
arch/arm/Kconfig
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@ -513,13 +513,21 @@ config PLAT_VERSATILE
source "arch/arm/mm/Kconfig"
config IWMMXT
bool "Enable iWMMXt support"
depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
default y if PXA27x || PXA3xx || ARCH_MMP
bool "Enable iWMMXt support (DEPRECATED)"
depends on PXA27x || PXA3xx || ARCH_MMP
help
Enable support for iWMMXt context switching at run time if
running on a CPU that supports it.
Machines that actually support this feature are very rare,
and support is deprecated in new gcc-14. While there were a
few applications that used this in the past, none are known
to still do so.
If you use this, please send a patch to remove the
deprecation, otherwise this will be removed in early
2027.
if !MMU
source "arch/arm/Kconfig-nommu"
endif