tools headers UAPI: Sync drm/i915_drm.h with the kernel sources

[linux-2.6-microblaze.git] / lib / Kconfig.kasan

diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
index 879757b..1f3e620 100644 (file)
--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -178,17 +178,17 @@ config KASAN_TAGS_IDENTIFY
          memory consumption.
 
 config KASAN_VMALLOC
-       bool "Back mappings in vmalloc space with real shadow memory"
-       depends on KASAN_GENERIC && HAVE_ARCH_KASAN_VMALLOC
+       bool "Check accesses to vmalloc allocations"
+       depends on HAVE_ARCH_KASAN_VMALLOC
        help
-         By default, the shadow region for vmalloc space is the read-only
-         zero page. This means that KASAN cannot detect errors involving
-         vmalloc space.
-
-         Enabling this option will hook in to vmap/vmalloc and back those
-         mappings with real shadow memory allocated on demand. This allows
-         for KASAN to detect more sorts of errors (and to support vmapped
-         stacks), but at the cost of higher memory usage.
+         This mode makes KASAN check accesses to vmalloc allocations for
+         validity.
+
+         With software KASAN modes, checking is done for all types of vmalloc
+         allocations. Enabling this option leads to higher memory usage.
+
+         With hardware tag-based KASAN, only VM_ALLOC mappings are checked.
+         There is no additional memory usage.
 
 config KASAN_KUNIT_TEST
        tristate "KUnit-compatible tests of KASAN bug detection capabilities" if !KUNIT_ALL_TESTS