[PATCH] doc: kgdb: Add description about rodata=off kernel parameter

[junan]

STRICT_KERNEL_RWX can not be turned off throught menuconfig on some
architectures, pass "rodata=off" to the kernel in this case.

Tested with qemu on arm64.

Signed-off-by: junan <junan76@xxxxxxx>
Suggested-by: Will Deacon <will@xxxxxxxxxx>
---
 Documentation/process/debugging/kgdb.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/process/debugging/kgdb.rst b/Documentation/process/debugging/kgdb.rst
index b29b0aac2717..f2c57de7992f 100644
--- a/Documentation/process/debugging/kgdb.rst
+++ b/Documentation/process/debugging/kgdb.rst
@@ -380,6 +380,13 @@ virtual address where the kernel image is mapped and confuses
 gdb which resolves addresses of kernel symbols from the symbol table
 of vmlinux.
 
+Kernel parameter: ``rodata``
+----------------------------
+
+``CONFIG_STRICT_KERNEL_RWX`` is turned on by default and is not
+visible to menuconfig on some architectures (arm64 for example),
+you can pass ``rodata=off`` to the kernel in this case.
+
 Using kdb
 =========
 
-- 
2.43.0