summaryrefslogtreecommitdiff
path: root/arch/riscv/Kconfig
diff options
context:
space:
mode:
authorPalmer Dabbelt <palmer@sifive.com>2018-04-02 20:43:14 -0700
committerPalmer Dabbelt <palmer@sifive.com>2018-04-02 20:43:14 -0700
commit7a8e7da42250138adf202ba2596ef7f68651060a (patch)
tree4b736dff3d2bd1b04fe7d6b1683350e6cc5f2df7 /arch/riscv/Kconfig
parent2c9046b71bb6ce2386e8847fce92b18aca9127c4 (diff)
parente21d54219c7a698b10d5f1e6a1023ebde284cd7b (diff)
RISC-V: Fixes to module loading
This cleans up the module support that was commited earlier to work with what's actually emitted from our GCC port as it lands upstream. Most of the work here is adding new relocations to the kernel. There's some limitations on module loading imposed by the kernel: * The kernel doesn't support linker relaxation, which is necessary to support R_RISCV_ALIGN. In order to get reliable module building you're going to need to a GCC that supports the new '-mno-relax', which IIRC isn't going to be out until 8.1.0. It's somewhat unlikely that R_RISCV_ALIGN will appear in a module even without '-mno-relax' support, so issues shouldn't be common. * There is no large code model for RISC-V, which means modules must be loaded within a 32-bit signed offset of the kernel. We don't currently have any mechanism for ensuring this memory remains free or moving pages around, so issues here might be common. I fixed a singcle merge conflict in arch/riscv/kernel/Makefile.
Diffstat (limited to 'arch/riscv/Kconfig')
-rw-r--r--arch/riscv/Kconfig5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 61dd82709898..1df6e264edd3 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -134,6 +134,10 @@ choice
bool "medium any code model"
endchoice
+config MODULE_SECTIONS
+ bool
+ select HAVE_MOD_ARCH_SPECIFIC
+
choice
prompt "Maximum Physical Memory"
default MAXPHYSMEM_2GB if 32BIT
@@ -144,6 +148,7 @@ choice
bool "2GiB"
config MAXPHYSMEM_128GB
depends on 64BIT && CMODEL_MEDANY
+ select MODULE_SECTIONS if MODULES
bool "128GiB"
endchoice