[PATCH v2 4/9] riscv: move exception table immediately after RO_DATA

Zong Li
2020-03-09T08:23:10Z

Move EXCEPTION_TABLE immediately after RO_DATA. Make it easy to set the
attribution of the sections which should be read-only at a time.
Add _data to specify the start of data section with write permission.
This patch is prepared for STRICT_KERNEL_RWX support.

Signed-off-by: Zong Li <zong.li@sifive.com>
---
arch/riscv/kernel/vmlinux.lds.S | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
index 1e0193ded420..02e948b620af 100644
--- a/arch/riscv/kernel/vmlinux.lds.S
+++ b/arch/riscv/kernel/vmlinux.lds.S
@@ -58,6 +58,10 @@ SECTIONS
*(.srodata*)
}

+ EXCEPTION_TABLE(0x10)
+
+ _data = .;
+
RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
.sdata : {
__global_pointer$ = . + 0x800;
@@ -69,8 +73,6 @@ SECTIONS

BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)

- EXCEPTION_TABLE(0x10)
-
.rel.dyn : {
*(.rel.dyn*)
}
--
2.25.1