On 1/21/21 4:02 PM, Vincenzo Frascino wrote: >> I think it'd be worth checking, if we're going to use this in common >> code. >> > Ok, I will run some tests and let you know. >
I checked on x86_64 and ppc64 (they both have KASAN implementation): I added the following: printk("%s: %d\n", __func__, virt_addr_valid(0)); in x86_64: sounds/last.c in pp64: arch/powerpc/kernel/setup-common.c and in both the cases the output is 0 (false) when the same in arm64 is 1 (true). Therefore I think we should proceed with the change. -- Regards, Vincenzo