Commit 327c7a90 authored by Andrey Konovalov's avatar Andrey Konovalov Committed by Vincenzo Frascino
Browse files

kasan, x86, s390: update undef CONFIG_KASAN



With the intoduction of hardware tag-based KASAN some kernel checks of
this kind:

  ifdef CONFIG_KASAN

will be updated to:

  if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)

x86 and s390 use a trick to #undef CONFIG_KASAN for some of the code
that isn't linked with KASAN runtime and shouldn't have any KASAN
annotations.

Also #undef CONFIG_KASAN_GENERIC with CONFIG_KASAN.

Signed-off-by: default avatarAndrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino's avatarVincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: default avatarMarco Elver <elver@google.com>
Acked-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Reviewed-by: default avatarAlexander Potapenko <glider@google.com>
---
Change-Id: I2a622db0cb86a8feb60c30d8cb09190075be2a90
parent 01b216a8
......@@ -3,6 +3,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#undef CONFIG_KASAN
#undef CONFIG_KASAN_GENERIC
#include "../lib/string.c"
int strncmp(const char *cs, const char *ct, size_t count)
......
......@@ -12,6 +12,7 @@
#undef CONFIG_PARAVIRT_XXL
#undef CONFIG_PARAVIRT_SPINLOCKS
#undef CONFIG_KASAN
#undef CONFIG_KASAN_GENERIC
/* cpu_feature_enabled() cannot be used this early */
#define USE_EARLY_PGTABLE_L5
......
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