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c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=Y9knGGnUVAWh7DTdx+ZTxdFDVkNgQfbAnELeGfW+RdY=; b=mFuytURhur6MpU4thG28UVExUdRBj/Kb1JQ0oA0NrGeo9P4dzj6utyFhfwcTbKn9Om yG3cdRqVfQesbJklBvGxZc/AYFblFYFNy+LE2/LhQO6Svsuie+G4OpEtE1qfZvpry+pD REtJGoTZa7goEdA/Mo01GRYbOtCkNDtV31tRAtI1onYKKCGQDFhoO5iiUQHfeCVE5VeK 7qNoNqsix7b8897Wx4kZsJrMMsW6uzDsf0bLcTJICYh8LKyhz5So9NNQMuX5z1KiI5Hf GhECZ2e78eeAxQdHR7W/mlKUMfDVCQN6bDL5IOfQD7oCipwRHa1u3+Kmf+n+RMybF634 KUTg== X-Gm-Message-State: AOAM533k2KwyaJocvoi3QAwMWBc2iIJzJ4PLibV/xpKSaTXhSokyZomi RyZasrC6uSWqxzBbxTL23ut40O0PmuM5LB88jZg5Lw== X-Google-Smtp-Source: ABdhPJwg1ZqsNa6m+QM8H9U4H7g0FrnS1I967V9k9LzoBXnW04IP01Czg+LMPbvguL00DEn2GMKtOD81ARN3XZDZUzo= X-Received: by 2002:a05:620a:211b:: with SMTP id l27mr2667134qkl.352.1605111203127; Wed, 11 Nov 2020 08:13:23 -0800 (PST) MIME-Version: 1.0 References: <71fcf23cd66d690afce1d80dc2f4659b2342152c.1605046192.git.andreyknvl@google.com> In-Reply-To: <71fcf23cd66d690afce1d80dc2f4659b2342152c.1605046192.git.andreyknvl@google.com> From: Alexander Potapenko Date: Wed, 11 Nov 2020 17:13:11 +0100 Message-ID: Subject: Re: [PATCH v9 36/44] kasan: define KASAN_GRANULE_SIZE for HW_TAGS To: Andrey Konovalov Cc: Catalin Marinas , Will Deacon , Vincenzo Frascino , Dmitry Vyukov , Andrey Ryabinin , Marco Elver , Evgenii Stepanov , Branislav Rankov , Kevin Brodsky , Andrew Morton , kasan-dev , Linux ARM , Linux Memory Management List , LKML Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Nov 10, 2020 at 11:12 PM Andrey Konovalov w= rote: > > Hardware tag-based KASAN has granules of MTE_GRANULE_SIZE. Define > KASAN_GRANULE_SIZE to MTE_GRANULE_SIZE for CONFIG_KASAN_HW_TAGS. > > Signed-off-by: Andrey Konovalov > Signed-off-by: Vincenzo Frascino > Reviewed-by: Marco Elver Reviewed-by: Alexander Potapenko > --- > Change-Id: I5d1117e6a991cbca00d2cfb4ba66e8ae2d8f513a > --- > mm/kasan/kasan.h | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h > index ae7def3b725b..d745a78745dd 100644 > --- a/mm/kasan/kasan.h > +++ b/mm/kasan/kasan.h > @@ -5,7 +5,13 @@ > #include > #include > > +#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) > #define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) > +#else > +#include > +#define KASAN_GRANULE_SIZE MTE_GRANULE_SIZE > +#endif > + > #define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) > #define KASAN_GRANULE_PAGE (KASAN_GRANULE_SIZE << PAGE_SHIFT) > > -- > 2.29.2.222.g5d2a92d10f8-goog > --=20 Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Stra=C3=9Fe, 33 80636 M=C3=BCnchen Gesch=C3=A4ftsf=C3=BChrer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg