[PATCH 29/35] kasan, x86, s390: update undef CONFIG_KASAN
From: Andrey Konovalov <hidden>
Date: 2020-08-14 17:29:38
Also in:
linux-mm, lkml
Subsystem:
s390 architecture, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
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: Andrey Konovalov <redacted> --- arch/s390/boot/string.c | 1 + arch/x86/boot/compressed/misc.h | 1 + 2 files changed, 2 insertions(+)
diff --git a/arch/s390/boot/string.c b/arch/s390/boot/string.c
index b11e8108773a..faccb33b462c 100644
--- a/arch/s390/boot/string.c
+++ b/arch/s390/boot/string.c@@ -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)
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h
index 726e264410ff..2ac973983a8e 100644
--- a/arch/x86/boot/compressed/misc.h
+++ b/arch/x86/boot/compressed/misc.h@@ -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
--
2.28.0.220.ged08abb693-goog
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