arch/arm/Kconfig: default ARM_MODULE_PLTS to 'y'

While testing multi_v7_defconfig with config fragments that makes the kernel size to grow. The kernel fails to load simple modules, as reported by kselftest:

[   34.107620] test_printf: section 4 reloc 2 sym 'memset': relocation

28 out of range (0xbf046044 -> 0xc109f720)
selftests: printf.sh [FAIL]

The problem that is seen when enabling too much in the kernel without enabling ARM_MODULE_PLTS, is that the top of the kernel gets out of reach from the bottom of the module area.

Suggested-by Arnd Bergmann <[email protected]>

Signed-off-by Anders Roxell <[email protected]>

---
 arch/arm/Kconfig | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

arch/arm/Kconfig +3 -2

index 7e3d53575486..6831f2d4ee75 100644
@@ -1701,6 +1701,7 @@ config ARCH_WANT_GENERAL_HUGETLB
 config ARM_MODULE_PLTS
        bool "Use PLTs to allow module memory to spill over into vmalloc area"
        depends on MODULES
+       default y
        help
          Allocate PLTs when loading modules so that jumps and calls whose
          targets are too far away for their relative offsets to be encoded

@@ -1711,7 +1712,8 @@ config ARM_MODULE_PLTS
          rounding up to page size, the actual memory footprint is usually
          the same.
 
-         Say y if you are getting out of memory errors while loading modules
+         Disabling this is usually safe for small single-platform
+         configurations. If unsure, say y.
 
 source "mm/Kconfig"
 
--

2.11.0

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