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 <[email protected]> Signed-off-by: Guenter Roeck <[email protected]> Cc: Anton Altaparmakov <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
sm00th · Nov 27, 2021 · 1f0e290 · 1f0e290
1 parent 4f0dda3
commit 1f0e290
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/arch/Kconfig b/arch/Kconfig
@@ -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