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X-IronPort-AV: E=McAfee;i="6600,9927,10834"; a="465634359" X-IronPort-AV: E=Sophos;i="6.02,149,1688454000"; d="scan'208";a="465634359" 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-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 0113510000F X-Stat-Signature: 64x1q9i1fibqy9mypgcdtr5o6s9jk3cu X-HE-Tag: 1694791171-434998 X-HE-Meta: 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 V66GpygP uxBiXsCf5ukHmK7PRsHto4jfIW9dhqGlIlmkX8rnCrKm0ZJvFZZcPnA9IYvi3zn5G+n6CxsdgV3PSr9Ft8auDRipcQkHq8doJ4p9r9dsrdOdsTxD6oaNquWMEI2g6jFHZh3JJ05jFeAiqUWrgAXEi7MbRy1I92oe47ER4m2dz3wLVLFW+gilY03OIDlXKwVUcmWjyj9y+fh9U+JOxvg2MF7TlVg== 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 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?