From: Christophe Leroy > Sent: 20 January 2021 07:49 > > 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 appear all the time with an > explicit warning on binutils, and remove this unneccessary > STDBINUTILS config option. > > Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu> > --- > arch/powerpc/Kconfig | 27 +++++++-------------------- > 1 file changed, 7 insertions(+), 20 deletions(-) > > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index a685e42d3993..3e29995540a7 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -720,18 +720,6 @@ 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 > @@ -771,17 +759,16 @@ 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. > + 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.
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 > > -- > 2.25.0 - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)