Messages in this thread Patch in this message | | | Date | Mon, 14 Nov 2022 16:12:31 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 5/5] x86/kasan: Populate shadow for shared chunk of the CPU entry area |
| |
On Mon, Nov 14, 2022 at 05:44:00PM +0300, Andrey Ryabinin wrote: > Going back kasan_populate_shadow() seems like safer and easier choice. > The only disadvantage of it that we might waste 1 page, which is not > much compared to the KASAN memory overhead.
So the below delta?
--- --- a/arch/x86/mm/kasan_init_64.c +++ b/arch/x86/mm/kasan_init_64.c @@ -388,7 +388,7 @@ void __init kasan_init(void) shadow_cea_end = kasan_mem_to_shadow_align_up(CPU_ENTRY_AREA_BASE + CPU_ENTRY_AREA_MAP_SIZE); - kasan_populate_early_shadow( + kasan_populate_shadow( kasan_mem_to_shadow((void *)PAGE_OFFSET + MAXMEM), kasan_mem_to_shadow((void *)VMALLOC_START));
| |