Re: [PATCH v5 4/5] LoongArch: Add support for kernel relocation

From: Youling Tang
Date: Fri Feb 17 2023 - 03:13:49 EST




On 02/17/2023 04:02 PM, Xi Ruoyao wrote:
On Fri, 2023-02-17 at 15:26 +0800, Youling Tang wrote:

This config allows to compile kernel as PIE and to relocate it at
any virtual address at runtime: this paves the way to KASLR.
Runtime relocation is possible since relocation metadata are embedded
into the kernel.

Signed-off-by: Youling Tang <tangyouling@xxxxxxxxxxx>
Signed-off-by: Xi Ruoyao <xry111@xxxxxxxxxxx> # Use arch_initcall
Signed-off-by: Jinyang He <hejinyang@xxxxxxxxxxx> # Provide la_abs idea

Use Suggested-by if only "idea" is provided.
In addition to the idea, the first draft code of la_abs is also
provided.

Maybe change it to the following,
Signed-off-by: Jinyang He <hejinyang@xxxxxxxxxxx> # Provide la_abs relocation draft code


+struct rela_la_abs {
+ long offset;
+ long symvalue;
+};

Use one tab instead of two for the indent.
My mistake.

Also the missing do_kaslr declaration will be added.

Youling.
Otherwise LGTM.