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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=PrZ8Xx7ZOES69PjxJ7W+uco2MTpU8K38pV5r5s6HLuc=; b=KiDvNH8yErms/N2rY1QVA92uIw/S5bJd+1RQ19XHZS0+NH9JG+gIqxIHoWgffZM4hk 1QMzavkb7byU3CFsZrxHupv9FJhLd1YyjZ5JmmCwweqbBUoHyhsgPyyLO3B1tgNo3xhc 8/nP0ligtXveA1VFlGmHmurSwen7hMCeyBitYm43vDq+2yVKoleJIn5mHjWRCk1IrbiF 7gtcIcm5Hi3R/CABsIRYXjHD3eGHSGjM/E9fU77AqPQCmCg7e53hLxu5nnIe7iIKvzxH v4JIfgafCQnNZ/axzZMXRX2mlSrscxusKW3pbh27LhypX/4ePSZsSuAdvwF2A5bULjKe LyzA== X-Gm-Message-State: AOAM530Vl4PtoppZ1cYDwxzXyyorKY1hA36t+kwvVTrrJr5yPhTQGpxF o4ymm+l+CaxYftQ21BcJGAFBlbXUqBU5e623 X-Google-Smtp-Source: ABdhPJyLILHteR8XQv6ASUjnKzzYpuETsrstUrOhCFHCsdKqZXOKezDHAwecoNC7DdH7utKm4OIpglyx7bKUIliq X-Received: by 2002:a0c:99c8:: with SMTP id y8mr3624054qve.57.1597426105434; Fri, 14 Aug 2020 10:28:25 -0700 (PDT) Date: Fri, 14 Aug 2020 19:27:08 +0200 In-Reply-To: Message-Id: <518da1e5169a4e343caa3c37feed5ad551b77a34.1597425745.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.220.ged08abb693-goog Subject: [PATCH 26/35] kasan, arm64: Enable TBI EL1 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_132829_740751_63AC9789 X-CRM114-Status: GOOD ( 13.00 ) X-Spam-Score: -7.7 (-------) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-7.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:84a listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM white-list 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.0 DKIMWL_WL_MED DKIMwl.org - Medium sender 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 , 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 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Vincenzo Frascino Hardware tag-based KASAN relies on Memory Tagging Extension (MTE) that is built on top of the Top Byte Ignore (TBI) feature. Enable in-kernel TBI when CONFIG_KASAN_HW_TAGS is turned on by enabling the TCR_TBI1 bit in proc.S. Signed-off-by: Vincenzo Frascino --- arch/arm64/mm/proc.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 152d74f2cc9c..6880ddaa5144 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -38,7 +38,7 @@ /* PTWs cacheable, inner/outer WBWA */ #define TCR_CACHE_FLAGS TCR_IRGN_WBWA | TCR_ORGN_WBWA -#ifdef CONFIG_KASAN_SW_TAGS +#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) #define TCR_KASAN_FLAGS TCR_TBI1 #else #define TCR_KASAN_FLAGS 0