powerpc: drop ranges for definition of ARCH_FORCE_MAX_ORDER

PowerPC defines ranges for ARCH_FORCE_MAX_ORDER some of which are insanely
allowing MAX_ORDER up to 63, which implies maximal contiguous allocation
size of 2^63 pages.

Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a
simple integer with sensible defaults.

Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER will
be able to do so but they won't be mislead by the bogus ranges.

Link: https://lkml.kernel.org/r/20230324052233.2654090-11-rppt@kernel.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Rich Felker <dalias@libc.org>
Cc: "Russell King (Oracle)" <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c0095bf795ca52ad9a5b02694261c9850630e2d7..419be4a71004d71d31f11232552a03b76fca5280 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -897,17 +897,11 @@ config DATA_SHIFT
 
 config ARCH_FORCE_MAX_ORDER
        int "Order of maximal physically contiguous allocations"
-       range 7 8 if PPC64 && PPC_64K_PAGES
        default "8" if PPC64 && PPC_64K_PAGES
-       range 12 12 if PPC64 && !PPC_64K_PAGES
        default "12" if PPC64 && !PPC_64K_PAGES
-       range 8 63 if PPC32 && PPC_16K_PAGES
        default "8" if PPC32 && PPC_16K_PAGES
-       range 6 63 if PPC32 && PPC_64K_PAGES
        default "6" if PPC32 && PPC_64K_PAGES
-       range 4 63 if PPC32 && PPC_256K_PAGES
        default "4" if PPC32 && PPC_256K_PAGES
-       range 10 63
        default "10"
        help
          The kernel page allocator limits the size of maximal physically