On Tue, Nov 10, 2020 at 11:12 PM Andrey Konovalov <andreyknvl@xxxxxxxxxx> wrote: > > This patch adds a configuration option for a new KASAN mode called > hardware tag-based KASAN. This mode uses the memory tagging approach > like the software tag-based mode, but relies on arm64 Memory Tagging > Extension feature for tag management and access checking. > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > Co-developed-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > Reviewed-by: Marco Elver <elver@xxxxxxxxxx> > --- > Change-Id: I246c2def9fffa6563278db1bddfbe742ca7bdefe > --- > lib/Kconfig.kasan | 58 +++++++++++++++++++++++++++++++++-------------- > 1 file changed, 41 insertions(+), 17 deletions(-) > > diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan > index ec59a0e26d09..e5f27ec8b254 100644 > --- a/lib/Kconfig.kasan > +++ b/lib/Kconfig.kasan > @@ -6,7 +6,10 @@ config HAVE_ARCH_KASAN > config HAVE_ARCH_KASAN_SW_TAGS > bool > > -config HAVE_ARCH_KASAN_VMALLOC > +config HAVE_ARCH_KASAN_HW_TAGS > + bool > + > +config HAVE_ARCH_KASAN_VMALLOC > bool > > config CC_HAS_KASAN_GENERIC > @@ -20,11 +23,11 @@ config CC_HAS_WORKING_NOSANITIZE_ADDRESS It might make sense to add a comment to CC_HAS_WORKING_NOSANITIZE_ADDRESS describing which modes need it (and why).
