Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964861Ab2EYAqt (ORCPT ); Thu, 24 May 2012 20:46:49 -0400 Received: from mga11.intel.com ([192.55.52.93]:34513 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756146Ab2EYAqs (ORCPT ); Thu, 24 May 2012 20:46:48 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="171122065" Message-ID: <4FBED670.8030002@linux.intel.com> Date: Thu, 24 May 2012 17:46:40 -0700 From: Arjan van de Ven User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: Alex Shi CC: Peter Zijlstra , Andrew Lutomirski , Jan Beulich , borislav.petkov@amd.com, arnd@arndb.de, akinobu.mita@gmail.com, eric.dumazet@gmail.com, fweisbec@gmail.com, rostedt@goodmis.org, hughd@google.com, jeremy@goop.org, len.brown@intel.com, tony.luck@intel.com, yongjie.ren@intel.com, kamezawa.hiroyu@jp.fujitsu.com, seto.hidetoshi@jp.fujitsu.com, penberg@kernel.org, yinghai@kernel.org, tglx@linutronix.de, akpm@linux-foundation.org, ak@linux.intel.com, avi@redhat.com, dhowells@redhat.com, mingo@redhat.com, riel@redhat.com, cpw@sgi.com, steiner@sgi.com, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, hpa@zytor.com, "asit.k.mallick@intel.com" Subject: Re: [PATCH v7 8/8] x86/tlb: just do tlb flush on one of siblings of SMT References: <1337782555-8088-1-git-send-email-alex.shi@intel.com> <1337782555-8088-9-git-send-email-alex.shi@intel.com> <4FBD18D20200007800085951@nat28.tlf.novell.com> <1337792984.9783.37.camel@laptop> <1337793338.9783.38.camel@laptop> <1337845230.9783.51.camel@laptop> <1337865811.9783.152.camel@laptop> <4FBE39FE.4050001@linux.intel.com> <4FBE3D95.8030501@intel.com> <4FBE4335.6020602@linux.intel.com> <4FBE4671.2090408@intel.com> <4FBE5D01.8040809@linux.intel.com> <4FBED22F.1030607@intel.com> In-Reply-To: <4FBED22F.1030607@intel.com> X-Enigmail-Version: 1.4.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 485 Lines: 14 On > As my limited knowledge, rewrite cr3 or invlpg will flush all levels TLB > entries in CPU. So, what's you mean of 'HAVE to flush all'? neither of these will flush global tlb entries. (see the "global" bit in the page table format) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/