I'm working on adding a <sys/pagesize.h> header to glibc, so that programmers can easily determine the range of possible page sizes for a particular target, for things like pointer tagging and mapped file alignment requirements.
I'm not familiar from the Kconfig system, but as far as I can tell, this ensures that 256 KiB pages are only available on 44x machines: arch/powerpc/Kconfig-config PPC_256K_PAGES arch/powerpc/Kconfig- bool "256k page size (Requires non-standard binutils settings)" arch/powerpc/Kconfig- depends on 44x && !PPC_47x arch/powerpc/Kconfig: select HAVE_PAGE_SIZE_256KB And none of the 44x configurations set 64BIT, so it's all 32-bit. Would it still make sense to recommend 256 KiB file alignment to programmers on 32-bit PowerPC, or should <sys/pagesize.h> pretend that the maximum page size is 64 KiB? Thanks, Florian
