tjh.dev / kernel
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arch: Add generic Kconfig option indicating page size smaller than 64k

NTFS_RW and VMXNET3 require a page size smaller than 64kB. Add generic
Kconfig option for use outside architecture code to avoid architecture
specific Kconfig options in that code.

Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

authored by

Guenter Roeck and committed by
Linus Torvalds 1f0e290c 4f0dda35

+10
+10
arch/Kconfig
··· 991 991 and vice-versa 32-bit applications to call 64-bit mmap(). 992 992 Required for applications doing different bitness syscalls. 993 993 994 + config PAGE_SIZE_LESS_THAN_64KB 995 + def_bool y 996 + depends on !ARM64_64K_PAGES 997 + depends on !IA64_PAGE_SIZE_64KB 998 + depends on !PAGE_SIZE_64KB 999 + depends on !PARISC_PAGE_SIZE_64KB 1000 + depends on !PPC_64K_PAGES 1001 + depends on !PPC_256K_PAGES 1002 + depends on !PAGE_SIZE_256KB 1003 + 994 1004 # This allows to use a set of generic functions to determine mmap base 995 1005 # address by giving priority to top-down scheme only if the process 996 1006 # is not in legacy mode (compat task, unlimited stack size or