From: Damien Le Moal <damien.lemoal@wdc.com>
Date: Wed, 12 Feb 2020 10:34:24 +0000 (+0900)
Subject: riscv: Force flat memory model with no-mmu
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=aa2734202acc506d09c8e641db4da161f902df27;p=uclinux-h8%2Flinux.git

riscv: Force flat memory model with no-mmu

Compilation errors trigger if ARCH_SPARSEMEM_ENABLE is enabled for
a nommu kernel. Since the sparsemem model does not make sense anyway
for the nommu case, do not allow selecting this option to always use
the flatmem model.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
---

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 73f029eae0cc..1a3b5a5276be 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -121,6 +121,7 @@ config ARCH_FLATMEM_ENABLE
 
 config ARCH_SPARSEMEM_ENABLE
 	def_bool y
+	depends on MMU
 	select SPARSEMEM_VMEMMAP_ENABLE
 
 config ARCH_SELECT_MEMORY_MODEL