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 X-Spam-Level: X-Spam-Status: No, score=-14.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04175C2B9F8 for ; Tue, 25 May 2021 18:59:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB6E86140E for ; Tue, 25 May 2021 18:59:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232527AbhEYTAj (ORCPT ); Tue, 25 May 2021 15:00:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:44856 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232525AbhEYTAi (ORCPT ); Tue, 25 May 2021 15:00:38 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D13DB6142D; Tue, 25 May 2021 18:59:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621969148; bh=is/NGrmgsSzX2OxAjXwabrq6tmqBczLOM6+ytnZaq9c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RTwbgM7yrNRfSQi86uyKVGe2O6dP1qQ4E70U0dncrDDVD9nOU/o0bvREJq/Y/z3M+ rn5CYfaaXld8tqL4GMxcVZTQX1W4Dpax3M6mcWtBh0xgZO7MAtlYqYgHaDg/dLfjZM DvUNV/JXJydmZU1HpNSwRQTXQivTcmP9830FgFueAzyxGzOJxA7qYyLhhSsDPkK9xb uNoW0azgD+AQYhhl2smUYVDKxqs1beZr3MxwrVcu31aXvQZ3bZfjLIIWYpWuTeSyvt kcm1Kw8UCr7zSSFWJIG44khFHG458/asUQRAGONMdc7dj1PLdcT5m/N6IESvFNtiOF jgqy6ZuB4ITqQ== From: Will Deacon To: Andrey Ryabinin , Evgenii Stepanov , Peter Collingbourne , Steven Price , linux-kernel@vger.kernel.org, Catalin Marinas , linux-arm-kernel@lists.infradead.org, Alexander Potapenko , Dmitry Vyukov , Andrey Konovalov , kasan-dev@googlegroups.com Cc: kernel-team@android.com, Will Deacon Subject: Re: [PATCH v5] kasan: speed up mte_set_mem_tag_range Date: Tue, 25 May 2021 19:58:47 +0100 Message-Id: <162196691854.2317985.15060469643983512129.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210521010023.3244784-1-eugenis@google.com> References: <20210521010023.3244784-1-eugenis@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 20 May 2021 18:00:23 -0700, Evgenii Stepanov wrote: > Use DC GVA / DC GZVA to speed up KASan memory tagging in HW tags mode. > > The first cacheline is always tagged using STG/STZG even if the address is > cacheline-aligned, as benchmarks show it is faster than a conditional > branch. Applied to arm64 (for-next/mte), thanks! [1/1] kasan: speed up mte_set_mem_tag_range https://git.kernel.org/arm64/c/3d0cca0b02ac Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev 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 X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE, SPF_PASS,UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F700C2B9F8 for ; Tue, 25 May 2021 19:20:31 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D3D116140F for ; Tue, 25 May 2021 19:20:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D3D116140F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KGOAAxaCrVntur5ir9fnBLv2j5DWLhJxd/CjNaHtzhU=; b=OP9iCV5OJCHlbT ACT+QwSYaLnkhKnRwWh+kh1qa1+KeWLb12UoNQ0wJD31AEJh7d03al5T/xFy3G/44GXFC/tmizzWV 6HUnbCn1zO0YTRQH6cQcp62hMW8atwKdSOqNWx1EL1YXmb1Tk3PJb5M5RXZ63paC8GKoon57sbEIy xY0rcHxj/szpnJXNmbLW78hfjpJkiLC5mFspqzEJbZdg5AZOuvees7ZkjHOikqMptEm435Ialx6pq 01zntf5AIF8fVlxxMc77k8T+ejg1BZydQvxBsXsKGFd2tGgQhJs86e7J3JN+4iHp+dwptwZ8ILMHU blHOc/qFvJE6oC6yLQHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1llcZY-007eJa-DI; Tue, 25 May 2021 19:18:37 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1llcGj-007Uot-Bz for linux-arm-kernel@lists.infradead.org; Tue, 25 May 2021 18:59:11 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id D13DB6142D; Tue, 25 May 2021 18:59:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621969148; bh=is/NGrmgsSzX2OxAjXwabrq6tmqBczLOM6+ytnZaq9c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RTwbgM7yrNRfSQi86uyKVGe2O6dP1qQ4E70U0dncrDDVD9nOU/o0bvREJq/Y/z3M+ rn5CYfaaXld8tqL4GMxcVZTQX1W4Dpax3M6mcWtBh0xgZO7MAtlYqYgHaDg/dLfjZM DvUNV/JXJydmZU1HpNSwRQTXQivTcmP9830FgFueAzyxGzOJxA7qYyLhhSsDPkK9xb uNoW0azgD+AQYhhl2smUYVDKxqs1beZr3MxwrVcu31aXvQZ3bZfjLIIWYpWuTeSyvt kcm1Kw8UCr7zSSFWJIG44khFHG458/asUQRAGONMdc7dj1PLdcT5m/N6IESvFNtiOF jgqy6ZuB4ITqQ== From: Will Deacon To: Andrey Ryabinin , Evgenii Stepanov , Peter Collingbourne , Steven Price , linux-kernel@vger.kernel.org, Catalin Marinas , linux-arm-kernel@lists.infradead.org, Alexander Potapenko , Dmitry Vyukov , Andrey Konovalov , kasan-dev@googlegroups.com Cc: kernel-team@android.com, Will Deacon Subject: Re: [PATCH v5] kasan: speed up mte_set_mem_tag_range Date: Tue, 25 May 2021 19:58:47 +0100 Message-Id: <162196691854.2317985.15060469643983512129.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210521010023.3244784-1-eugenis@google.com> References: <20210521010023.3244784-1-eugenis@google.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210525_115909_563284_58A703E3 X-CRM114-Status: UNSURE ( 7.41 ) X-CRM114-Notice: Please train this message. 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 Thu, 20 May 2021 18:00:23 -0700, Evgenii Stepanov wrote: > Use DC GVA / DC GZVA to speed up KASan memory tagging in HW tags mode. > > The first cacheline is always tagged using STG/STZG even if the address is > cacheline-aligned, as benchmarks show it is faster than a conditional > branch. Applied to arm64 (for-next/mte), thanks! [1/1] kasan: speed up mte_set_mem_tag_range https://git.kernel.org/arm64/c/3d0cca0b02ac Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel