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Fri, 03 Dec 2021 04:42:16 -0800 (PST) Date: Fri, 3 Dec 2021 13:42:10 +0100 From: Marco Elver To: andrey.konovalov@linux.dev Cc: Alexander Potapenko , Vincenzo Frascino , Catalin Marinas , Peter Collingbourne , Andrey Konovalov , Dmitry Vyukov , kasan-dev@googlegroups.com, Andrew Morton , linux-mm@kvack.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: Re: [PATCH 24/31] kasan, vmalloc, arm64: mark vmalloc mappings as pgprot_tagged Message-ID: References: <8557e32739e38d3cdf409789c2b3e1b405c743f4.1638308023.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <8557e32739e38d3cdf409789c2b3e1b405c743f4.1638308023.git.andreyknvl@google.com> User-Agent: Mutt/2.0.5 (2021-01-21) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211203_044219_262153_3CCAC5EB X-CRM114-Status: GOOD ( 11.40 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 On Tue, Nov 30, 2021 at 11:07PM +0100, andrey.konovalov@linux.dev wrote: > From: Andrey Konovalov > > HW_TAGS KASAN relies on ARM Memory Tagging Extension (MTE). With MTE, > a memory region must be mapped as MT_NORMAL_TAGGED to allow setting > memory tags via MTE-specific instructions. > > This change adds proper protection bits to vmalloc() allocations. > These allocations are always backed by page_alloc pages, so the tags > will actually be getting set on the corresponding physical memory. > > Signed-off-by: Andrey Konovalov > Co-developed-by: Vincenzo Frascino This is also missing Signed-off-by from Vincenzo. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1F7CC433EF for ; Fri, 3 Dec 2021 12:42:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 55E7E6B0072; 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Fri, 03 Dec 2021 04:42:17 -0800 (PST) Received: from elver.google.com ([2a00:79e0:15:13:cb5f:d3e:205e:c7c4]) by smtp.gmail.com with ESMTPSA id a22sm2474329wme.19.2021.12.03.04.42.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Dec 2021 04:42:16 -0800 (PST) Date: Fri, 3 Dec 2021 13:42:10 +0100 From: Marco Elver To: andrey.konovalov@linux.dev Cc: Alexander Potapenko , Vincenzo Frascino , Catalin Marinas , Peter Collingbourne , Andrey Konovalov , Dmitry Vyukov , kasan-dev@googlegroups.com, Andrew Morton , linux-mm@kvack.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: Re: [PATCH 24/31] kasan, vmalloc, arm64: mark vmalloc mappings as pgprot_tagged Message-ID: References: <8557e32739e38d3cdf409789c2b3e1b405c743f4.1638308023.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8557e32739e38d3cdf409789c2b3e1b405c743f4.1638308023.git.andreyknvl@google.com> User-Agent: Mutt/2.0.5 (2021-01-21) X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 79FFFB0000A2 X-Stat-Signature: q7tencmcc7tfgtapud8r6j881yaom31x Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=rL72f8vz; spf=pass (imf24.hostedemail.com: domain of elver@google.com designates 209.85.128.42 as permitted sender) smtp.mailfrom=elver@google.com; dmarc=pass (policy=reject) header.from=google.com X-HE-Tag: 1638535338-319020 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 30, 2021 at 11:07PM +0100, andrey.konovalov@linux.dev wrote: > From: Andrey Konovalov > > HW_TAGS KASAN relies on ARM Memory Tagging Extension (MTE). With MTE, > a memory region must be mapped as MT_NORMAL_TAGGED to allow setting > memory tags via MTE-specific instructions. > > This change adds proper protection bits to vmalloc() allocations. > These allocations are always backed by page_alloc pages, so the tags > will actually be getting set on the corresponding physical memory. > > Signed-off-by: Andrey Konovalov > Co-developed-by: Vincenzo Frascino This is also missing Signed-off-by from Vincenzo.