From: Konrad Eisele <konrad@xxxxxxxxxxx>
Date: Thu, 13 Oct 2011 09:00:04 +0200
> -/* In kernel these functions don't return a value.
> - * One should use macros in asm/string.h for that purpose.
> - * We return 0, so that bugs are more apparent.
> - */
> -#define SETUP_RETL
> -#define RETL_INSN clr %o0
> +#define SETUP_RETL mov %o0, %g6
> +#define RETL_INSN mov %g6, %o0
Sigh...
The kernel uses %g6 as the global thread register, see
include/asm/thread_info_32.h:
register struct thread_info *current_thread_info_reg asm("g6");
Your kernel would have crashed early in the boot if you actually
tested this patch.
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