On Wed, Nov 4, 2020 at 8:30 PM Vasily Gorbik <gor@xxxxxxxxxxxxx> wrote: > > On Wed, Nov 04, 2020 at 08:22:07PM +0100, Andrey Konovalov wrote: > > On Wed, Nov 4, 2020 at 8:11 PM Vasily Gorbik <gor@xxxxxxxxxxxxx> wrote: > > > > > > On Mon, Nov 02, 2020 at 05:03:56PM +0100, Andrey Konovalov wrote: > > > > This is a preparatory commit for the upcoming addition of a new hardware > > > > tag-based (MTE-based) KASAN mode. > > > > > > > > The new mode won't be using shadow memory, but will still use the concept > > > > of memory granules. Each memory granule maps to a single metadata entry: > > > > 8 bytes per one shadow byte for generic mode, 16 bytes per one shadow byte > > > > for software tag-based mode, and 16 bytes per one allocation tag for > > > > hardware tag-based mode. > > > > > > > > Rename KASAN_SHADOW_SCALE_SIZE to KASAN_GRANULE_SIZE, and KASAN_SHADOW_MASK > > > > to KASAN_GRANULE_MASK. > > > > > > > > Also use MASK when used as a mask, otherwise use SIZE. > > > > > > > > No functional changes. > > > > > > > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > > > > Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > > > > Reviewed-by: Marco Elver <elver@xxxxxxxxxx> > > > > --- > > > > Change-Id: Iac733e2248aa9d29f6fc425d8946ba07cca73ecf > > > > --- > > > > Documentation/dev-tools/kasan.rst | 2 +- > > > > lib/test_kasan.c | 2 +- > > > > mm/kasan/common.c | 39 ++++++++++++++++--------------- > > > > mm/kasan/generic.c | 14 +++++------ > > > > mm/kasan/generic_report.c | 8 +++---- > > > > mm/kasan/init.c | 8 +++---- > > > > mm/kasan/kasan.h | 4 ++-- > > > > mm/kasan/report.c | 10 ++++---- > > > > mm/kasan/tags_report.c | 2 +- > > > > 9 files changed, 45 insertions(+), 44 deletions(-) > > > > > > hm, this one got escaped somehow > > > > > > lib/test_kasan_module.c: > > > 18 #define OOB_TAG_OFF (IS_ENABLED(CONFIG_KASAN_GENERIC) ? 0 : KASAN_SHADOW_SCALE_SIZE) > > > > You mean it's not on the patch? It is, almost at the very top. > > lib/test_kasan_module.c != lib/test_kasan.c > > I fetched your branch. And I had to fix it up to build old good kasan > test module CONFIG_TEST_KASAN_MODULE=m Ah, right, it was just recently merged into mainline, that's why it's missing. Thanks for noticing!
