riscv: select ARCH_HAS_STRICT_KERNEL_RWX only if MMU

ARCH_HAS_STRICT_KERNEL_RWX is not useful for NO-MMU systems.
Furthermore, has this option leads to very large boot image files on
64bits architectures, do not enable this option to allow supporting
no-mmu platforms such as the Kendryte K210 SoC based boards.

Fixes: 00cb41d5ad31 ("riscv: add alignment for text, rodata and data sections")
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Wladimir J. van der Laan <laanwj@gmail.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 62f7bfe..74f82cf 100644 (file)
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -60,7 +60,7 @@ config RISCV
        select ARCH_HAS_GIGANTIC_PAGE
        select ARCH_HAS_SET_DIRECT_MAP
        select ARCH_HAS_SET_MEMORY
-       select ARCH_HAS_STRICT_KERNEL_RWX
+       select ARCH_HAS_STRICT_KERNEL_RWX if MMU
        select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
        select SPARSEMEM_STATIC if 32BIT
        select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU