On Wed, Feb 21, 2024, at 16:51, Arnd Bergmann wrote:Thanks a lot. I didn't consider this situation. I will take your advice. Thanks again.
I have given your patch some build testing with random
configurations in my build setup and it seems to work
fine with gcc/binutils, but unfortunately I came across
a link failure using clang/lld:
I ran into another bug now, this time with CONFIG_XIP_KERNEL=y:
no __ex_table in file: vmlinux
Failed to sort kernel tables
make[4]: *** [scripts/Makefile.vmlinux:37: vmlinux] Error 1
Essentially you have to modify arch/arm/kernel/vmlinux-xip.lds.S
the same way as vmlinux.lds.S:
--- a/arch/arm/kernel/vmlinux-xip.lds.S
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -63,7 +63,7 @@ SECTIONS
. = ALIGN(4);
__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
__start___ex_table = .;
- ARM_MMU_KEEP(*(__ex_table))
+ ARM_MMU_KEEP(KEEP(*(__ex_table)))
__stop___ex_table = .;
}
@@ -83,7 +83,7 @@ SECTIONS
}
.init.arch.info : {
__arch_info_begin = .;
- *(.arch.info.init)
+ KEEP(*(.arch.info.init))
__arch_info_end = .;
}
.init.tagtable : {
The pv_table is not needed for XIP_KERNEL=y because that
requires not patching the kernel.
Arnd