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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=iIfWl4J1G8iITi93NOgHDi/s/4XpKw61QWFW+N1x36I=; b=afaCTich/VT68Vf2Tc/AdPmUp6geoJLs0xl+Hn+vo7rBg1Zuo0qk07r4wxGSknkoGK lX1PD77HQ8LydrS6AQngbTnGskXhi1MpDQaiM627bnrvnKaucr/WihnbhRdQSfscsJjB e5a4g3ANtIvd0tUV4WnXn9DJb+csn3JbJc4aKOb6yrScPJYjP8VgKTugB3w2MfzGmf15 /7bzeMtiyvnge/DJPJ2KjKIqYjoJLIq1SZGRSCiZMTbRuSxYNyXwUxNkylo08Dc1M3OD vFOh3XzwGW/GhUl//H6DIAfgIhilCa8Vud2N8PUpfgJ5DD9oKvjmRnBFqleUHqM3ks+Y bwPw== X-Gm-Message-State: AOAM530zNgLG69WFfzOvvfrewCc5ac63pV9kTgBnQ40AF3LVc1odEYK8 LqHCLpE8RsoVI122T3jRhLUC0SPGfFtRijxs X-Google-Smtp-Source: ABdhPJy/WRGBFbHW6yzu3fXjbbh6ZfhsR5aLr+bVb6qX539D5XqF883Lkwh9f6pP5sIhJRXvKfWE1HxGbtWAPR5g X-Received: by 2002:a1c:8094:: with SMTP id b142mr3616367wmd.59.1597426107618; Fri, 14 Aug 2020 10:28:27 -0700 (PDT) Date: Fri, 14 Aug 2020 19:27:09 +0200 In-Reply-To: Message-Id: <4e2dea1d2163dc6f5a3ceb943f485b09cbd252e0.1597425745.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.220.ged08abb693-goog Subject: [PATCH 27/35] kasan, arm64: align allocations for HW_TAGS From: Andrey Konovalov To: Dmitry Vyukov , Vincenzo Frascino , Catalin Marinas , kasan-dev@googlegroups.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200814_132831_806590_B7EA7374 X-CRM114-Status: GOOD ( 11.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marco Elver , Elena Petrova , Andrey Konovalov , Kevin Brodsky , Will Deacon , Branislav Rankov , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alexander Potapenko , linux-arm-kernel@lists.infradead.org, Andrey Ryabinin , Andrew Morton , Evgenii Stepanov Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hardware tag-based KASAN uses the memory tagging approach, which requires all allocations to be aligned to the memory granule size. Align the allocations to MTE_GRANULE_SIZE via ARCH_SLAB_MINALIGN when CONFIG_KASAN_HW_TAGS is enabled. Signed-off-by: Andrey Konovalov --- arch/arm64/include/asm/cache.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/include/asm/cache.h b/arch/arm64/include/asm/cache.h index a4d1b5f771f6..b8a0cae38470 100644 --- a/arch/arm64/include/asm/cache.h +++ b/arch/arm64/include/asm/cache.h @@ -6,6 +6,7 @@ #define __ASM_CACHE_H #include +#include #define CTR_L1IP_SHIFT 14 #define CTR_L1IP_MASK 3 @@ -50,6 +51,8 @@ #ifdef CONFIG_KASAN_SW_TAGS #define ARCH_SLAB_MINALIGN (1ULL << KASAN_SHADOW_SCALE_SHIFT) +#elif defined(CONFIG_KASAN_HW_TAGS) +#define ARCH_SLAB_MINALIGN MTE_GRANULE_SIZE #endif #ifndef __ASSEMBLY__ -- 2.28.0.220.ged08abb693-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel