Commit 902d75cd authored Nov 21, 2023 by Huacai Chen

LoongArch: Silence the boot warning about 'nokaslr'



The kernel parameter 'nokaslr' is handled before start_kernel(), so we
don't need early_param() to mark it technically. But it can cause a boot
warning as follows:

Unknown kernel command line parameters "nokaslr", will be passed to user space.

When we use 'init=/bin/bash', 'nokaslr' which passed to user space will
even cause a kernel panic. So we use early_param() to mark 'nokaslr',
simply print a notice and silence the boot warning (also fix a potential
panic). This logic is similar to RISC-V.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

parent ee2daf71

arch/loongarch/kernel/relocate.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -102,6 +102,14 @@ static inline __init unsigned long get_random_boot(void)
		return hash;
		}

		static int __init nokaslr(char *p)
		{
		pr_info("KASLR is disabled.\n");

		return 0; /* Print a notice and silence the boot warning */
		}
		early_param("nokaslr", nokaslr);

		static inline __init bool kaslr_disabled(void)
		{
		char *str;