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powerpc/44x: Remove STDBINUTILS kconfig option

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STDBINUTILS is just a toggle to allow 256k page size to appear in the
possible page sizes list for the 44x.

Make 256k page size option appear all the time with an explicit
warning about binutils, and remove this unnecessary STDBINUTILS
config option.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
[mpe: Incorporate help text changes from David Laight]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f9981e819009aa121a998dc483052ec76f78f991.1611128938.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-01-20 07:49:14 +00:00 committed by Michael Ellerman
parent 910a0cb6d2
commit 4eeef098b4
1 changed files with 6 additions and 20 deletions
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26
arch/powerpc/Kconfig
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@ -716,18 +716,6 @@ config ARCH_MEMORY_PROBE
def_bool y
depends on MEMORY_HOTPLUG
config STDBINUTILS
bool "Using standard binutils settings"
depends on 44x
default y
help
Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
Note, that kernel will be able to run only those applications,
which had been compiled using binutils later than 2.17.50.0.3 with
'-zmax-page-size' set to 256K (the default is 64K). Or, if using
the older binutils, you can patch them with a trivial patch, which
changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
choice
prompt "Page size"
default PPC_4K_PAGES
@ -767,17 +755,15 @@ config PPC_64K_PAGES
select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
config PPC_256K_PAGES
bool "256k page size"
depends on 44x && !STDBINUTILS && !PPC_47x
bool "256k page size (Requires non-standard binutils settings)"
depends on 44x && !PPC_47x
help
Make the page size 256k.
As the ELF standard only requires alignment to support page
sizes up to 64k, you will need to compile all of your user
space applications with a non-standard binutils settings
(see the STDBINUTILS description for details).
Say N unless you know what you are doing.
The kernel will only be able to run applications that have been
compiled with '-zmax-page-size' set to 256K (the default is 64K) using
binutils later than 2.17.50.0.3, or by patching the ELF_MAXPAGESIZE
definition from 0x10000 to 0x40000 in older versions.
endchoice