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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAD6FC4332F for ; Mon, 12 Dec 2022 19:16:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233278AbiLLTQF (ORCPT ); Mon, 12 Dec 2022 14:16:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233169AbiLLTPv (ORCPT ); Mon, 12 Dec 2022 14:15:51 -0500 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7B3113FB9 for ; Mon, 12 Dec 2022 11:15:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1670872542; x=1702408542; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=pmkDGG0SCzGjvl2TyHg9CLp6eUz7InkcEkx47cTISGw=; b=DO/XmT4yUMJftdhxzELrqBeVP2wShdWobbLJjfnTy4koRGm+8US40TAj gCYmPaVQ9ai6pMY6e0ABuGLQOU0sQT69bbKkvIGCqIhVxjp54EvQ91lNo dMK3VYUGxGerbDP6chBTP6V4R6j38aVbjx/XwFKXZSeTXUyIvkdZuFL7z FF+SumrPE/wsqZgjXKkY0EUhVdVLby6ENBlBNhRXG3SnNpSlU5XjdWy86 NK/pP1USqa82pe69RI0vpiNLr5kYNucFbS7G+In5Kuirtv0UXlBbNksll ojIiTWzcbg/d6jG+qqS08ZAuydt7KZI/UPrqQlA58cPwaTCa2xh4kfPT9 Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10559"; a="317973432" X-IronPort-AV: E=Sophos;i="5.96,239,1665471600"; d="scan'208";a="317973432" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Dec 2022 11:15:24 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10559"; a="716911531" X-IronPort-AV: E=Sophos;i="5.96,239,1665471600"; d="scan'208";a="716911531" Received: from viggo.jf.intel.com (HELO ray2.sr71.net) ([10.54.77.144]) by fmsmga004.fm.intel.com with ESMTP; 12 Dec 2022 11:15:24 -0800 From: Dave Hansen To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, x86@kernel.org Subject: [GIT PULL] x86/splitlock for 6.2 Date: Mon, 12 Dec 2022 11:15:24 -0800 Message-Id: <20221212191524.553244-1-dave.hansen@linux.intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Linus, Please pull some x86/splitlock changes for v6.2. This includes a single change which enables users to reduce the penalty inflicted on split lock users. There are some proprietary, binary-only games which because entirely unplayable with the old penalty. Anyone opting into the new mode is, of course, more exposed to the DoS nasitness inherent with split locks, but they can play their games again. -- The following changes since commit f0c4d9fc9cc9462659728d168387191387e903cc: Linux 6.1-rc4 (2022-11-06 15:07:11 -0800) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_splitlock_for_6.2 for you to fetch changes up to 727209376f4998bc84db1d5d8af15afea846a92b: x86/split_lock: Add sysctl to control the misery mode (2022-11-10 10:14:22 -0800) ---------------------------------------------------------------- Add a sysctl to control the split lock misery mode ---------------------------------------------------------------- Guilherme G. Piccoli (1): x86/split_lock: Add sysctl to control the misery mode Documentation/admin-guide/sysctl/kernel.rst | 23 +++++++++++ arch/x86/kernel/cpu/intel.c | 63 ++++++++++++++++++++++++----- 2 files changed, 76 insertions(+), 10 deletions(-)