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[23.128.96.32]) by mx.google.com with ESMTPS id x63-20020a636342000000b00565f4166f4bsi3499967pgb.284.2023.09.15.09.41.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Sep 2023 09:41:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) client-ip=23.128.96.32; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=crH1M1wm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by agentk.vger.email (Postfix) with ESMTP id AECD6805A786; Fri, 15 Sep 2023 08:19:35 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at agentk.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236019AbjIOPTf (ORCPT + 99 others); Fri, 15 Sep 2023 11:19:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235907AbjIOPTe (ORCPT ); Fri, 15 Sep 2023 11:19:34 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46AFAE50; Fri, 15 Sep 2023 08:19:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694791170; x=1726327170; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=C6U2cRGFP7C+v2OzQruEDcRdqN+1cAwB8dcq4EUTp58=; b=crH1M1wmudyfPPCiZL8YD+N8bRIcWsnrpeo0mhfHbBgqbclpvNZ3GmZC LbuONErGt/OgAN3rh9J1m3MjeTQp+i0n5KHE5VxR+OB43mG7dClbqR/VL O7jyIiRm7EVhR0ST5DZm+tsEtdCkq2nrLb6b4rJQzuPrgGEOQ/ezcQRWb j2rxXbfqM28X2HjBgxANaKmixLrUtfmvZPcjt4ZrAQ+rnyhOUPoEsrhyj o1bJ79VvpHvN3QTb8hNW+c753Bf88k5ZrpULYatZVJochqb2mdWuKEzFD QX+oxqOei+eGVYRq9aSB/el75ehxK0zh85doYjwV+ox+0auiIjQfAR52h g==; X-IronPort-AV: E=McAfee;i="6600,9927,10834"; a="465634362" X-IronPort-AV: E=Sophos;i="6.02,149,1688454000"; d="scan'208";a="465634362" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2023 08:19:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10834"; a="1075832196" X-IronPort-AV: E=Sophos;i="6.02,149,1688454000"; d="scan'208";a="1075832196" Received: from spswartz-mobl.amr.corp.intel.com (HELO [10.209.21.97]) ([10.209.21.97]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2023 08:19:28 -0700 Message-ID: <7a4f5128-28fd-3c5f-34c2-1c34f4448174@intel.com> Date: Fri, 15 Sep 2023 08:19:28 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.0 Subject: Re: [RFC PATCH 00/14] Prevent cross-cache attacks in the SLUB allocator Content-Language: en-US To: Matteo Rizzo , cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-hardening@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, corbet@lwn.net, luto@kernel.org, peterz@infradead.org Cc: jannh@google.com, evn@google.com, poprdi@google.com, jordyzomer@google.com References: <20230915105933.495735-1-matteorizzo@google.com> From: Dave Hansen In-Reply-To: <20230915105933.495735-1-matteorizzo@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.3 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Fri, 15 Sep 2023 08:19:35 -0700 (PDT) On 9/15/23 03:59, Matteo Rizzo wrote: > The goal of this patch series is to deterministically prevent cross-cache > attacks in the SLUB allocator. What's the cost?