Commit 1f0e290c authored by Guenter Roeck's avatar Guenter Roeck Committed by Linus Torvalds
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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: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4f0dda35

arch/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -991,6 +991,16 @@ config HAVE_ARCH_COMPAT_MMAP_BASES 
	  and vice-versa 32-bit applications to call 64-bit mmap().

	  Required for applications doing different bitness syscalls.



config PAGE_SIZE_LESS_THAN_64KB

	def_bool y

	depends on !ARM64_64K_PAGES

	depends on !IA64_PAGE_SIZE_64KB

	depends on !PAGE_SIZE_64KB

	depends on !PARISC_PAGE_SIZE_64KB

	depends on !PPC_64K_PAGES

	depends on !PPC_256K_PAGES

	depends on !PAGE_SIZE_256KB



# This allows to use a set of generic functions to determine mmap base

# address by giving priority to top-down scheme only if the process

# is not in legacy mode (compat task, unlimited stack size or