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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F62FC02181 for ; Mon, 20 Jan 2025 22:45:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9085E280002; Mon, 20 Jan 2025 17:45:25 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 8B756280001; Mon, 20 Jan 2025 17:45:25 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 77EC9280002; Mon, 20 Jan 2025 17:45:25 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 59FB4280001 for ; Mon, 20 Jan 2025 17:45:25 -0500 (EST) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 162E214015F for ; Mon, 20 Jan 2025 22:45:25 +0000 (UTC) X-FDA: 83029313010.18.2A9EEBF Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) by imf26.hostedemail.com (Postfix) with ESMTP id 59D3214000B for ; Mon, 20 Jan 2025 22:45:23 +0000 (UTC) Authentication-Results: imf26.hostedemail.com; dkim=none; spf=pass (imf26.hostedemail.com: domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) smtp.mailfrom=riel@shelob.surriel.com; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1737413123; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UVWHwXAVTTsZWrQY/THNfbkBIJAkXu1y4LMqHsligiE=; b=bk76gLlg+GTAS7aQ/zmdQBJlFawYpcLTFwNLFFiWQ13imSRW1D962zSUPhFjGccbotI44c qUbQasTfPo1KoK5y/N/QLyOhb1Opk/eqhd90J+PcvfQhmVzgK1Z24X/TmWh/xoagqdrdE0 xeHW+wjSYvSX0Cj75CBJzQjm2EjeB/c= ARC-Authentication-Results: i=1; imf26.hostedemail.com; dkim=none; spf=pass (imf26.hostedemail.com: domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) smtp.mailfrom=riel@shelob.surriel.com; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1737413123; a=rsa-sha256; cv=none; b=ZqmF4XCVcdu64ljd3pVnMjWIufWhkfrIWHEkDlbSuRFGnAjcxf571gmOv39fr93NOLiUAC IlpN7Bx1T7bYlSqYiYIiQwEBOL54jMwamE6060ZsDgeTW9xbYcsQ+mGOeG6LUTcecCmxke QMpvOlr2S01P8/lDmuf3VD/j5DDBmpI= Received: from fangorn.home.surriel.com ([10.0.13.7]) by shelob.surriel.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.97.1) (envelope-from ) id 1ta0VP-0000000051Z-0Ah9; Mon, 20 Jan 2025 17:44:27 -0500 Message-ID: Subject: Re: [PATCH v6 09/12] x86/mm: enable broadcast TLB invalidation for multi-threaded processes From: Rik van Riel To: Nadav Amit Cc: the arch/x86 maintainers , Linux Kernel Mailing List , Borislav Petkov , peterz@infradead.org, Dave Hansen , zhengqi.arch@bytedance.com, thomas.lendacky@amd.com, kernel-team@meta.com, "open list:MEMORY MANAGEMENT" , Andrew Morton , jannh@google.com, mhklinux@outlook.com, andrew.cooper3@citrix.com Date: Mon, 20 Jan 2025 17:44:26 -0500 In-Reply-To: References: <20250120024104.1924753-1-riel@surriel.com> <20250120024104.1924753-10-riel@surriel.com> <84ba1c3e-d975-458f-89f5-a6f5d04a3d22@gmail.com> Autocrypt: addr=riel@surriel.com; prefer-encrypt=mutual; keydata=mQENBFIt3aUBCADCK0LicyCYyMa0E1lodCDUBf6G+6C5UXKG1jEYwQu49cc/gUBTTk33A eo2hjn4JinVaPF3zfZprnKMEGGv4dHvEOCPWiNhlz5RtqH3SKJllq2dpeMS9RqbMvDA36rlJIIo47 Z/nl6IA8MDhSqyqdnTY8z7LnQHqq16jAqwo7Ll9qALXz4yG1ZdSCmo80VPetBZZPw7WMjo+1hByv/ lvdFnLfiQ52tayuuC1r9x2qZ/SYWd2M4p/f5CLmvG9UcnkbYFsKWz8bwOBWKg1PQcaYHLx06sHGdY dIDaeVvkIfMFwAprSo5EFU+aes2VB2ZjugOTbkkW2aPSWTRsBhPHhV6dABEBAAG0HlJpayB2YW4gU mllbCA8cmllbEByZWRoYXQuY29tPokBHwQwAQIACQUCW5LcVgIdIAAKCRDOed6ShMTeg05SB/986o gEgdq4byrtaBQKFg5LWfd8e+h+QzLOg/T8mSS3dJzFXe5JBOfvYg7Bj47xXi9I5sM+I9Lu9+1XVb/ r2rGJrU1DwA09TnmyFtK76bgMF0sBEh1ECILYNQTEIemzNFwOWLZZlEhZFRJsZyX+mtEp/WQIygHV WjwuP69VJw+fPQvLOGn4j8W9QXuvhha7u1QJ7mYx4dLGHrZlHdwDsqpvWsW+3rsIqs1BBe5/Itz9o 6y9gLNtQzwmSDioV8KhF85VmYInslhv5tUtMEppfdTLyX4SUKh8ftNIVmH9mXyRCZclSoa6IMd635 Jq1Pj2/Lp64tOzSvN5Y9zaiCc5FucXtB9SaWsgdmFuIFJpZWwgPHJpZWxAc3VycmllbC5jb20+iQE +BBMBAgAoBQJSLd2lAhsjBQkSzAMABgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRDOed6ShMTe g4PpB/0ZivKYFt0LaB22ssWUrBoeNWCP1NY/lkq2QbPhR3agLB7ZXI97PF2z/5QD9Fuy/FD/jddPx KRTvFCtHcEzTOcFjBmf52uqgt3U40H9GM++0IM0yHusd9EzlaWsbp09vsAV2DwdqS69x9RPbvE/Ne fO5subhocH76okcF/aQiQ+oj2j6LJZGBJBVigOHg+4zyzdDgKM+jp0bvDI51KQ4XfxV593OhvkS3z 3FPx0CE7l62WhWrieHyBblqvkTYgJ6dq4bsYpqxxGJOkQ47WpEUx6onH+rImWmPJbSYGhwBzTo0Mm G1Nb1qGPG+mTrSmJjDRxrwf1zjmYqQreWVSFEt26tBpSaWsgdmFuIFJpZWwgPHJpZWxAZmIuY29tP okBPgQTAQIAKAUCW5LbiAIbIwUJEswDAAYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQznneko TE3oOUEQgAsrGxjTC1bGtZyuvyQPcXclap11Ogib6rQywGYu6/Mnkbd6hbyY3wpdyQii/cas2S44N cQj8HkGv91JLVE24/Wt0gITPCH3rLVJJDGQxprHTVDs1t1RAbsbp0XTksZPCNWDGYIBo2aHDwErhI omYQ0Xluo1WBtH/UmHgirHvclsou1Ks9jyTxiPyUKRfae7GNOFiX99+ZlB27P3t8CjtSO831Ij0Ip QrfooZ21YVlUKw0Wy6Ll8EyefyrEYSh8KTm8dQj4O7xxvdg865TLeLpho5PwDRF+/mR3qi8CdGbkE c4pYZQO8UDXUN4S+pe0aTeTqlYw8rRHWF9TnvtpcNzZw== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 User-Agent: Evolution 3.54.1 (3.54.1-1.fc41) MIME-Version: 1.0 X-Rspamd-Queue-Id: 59D3214000B X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: bhpe9qitxzfnukoqf3kfjfz6qyhqqk53 X-HE-Tag: 1737413123-463469 X-HE-Meta: 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 3P65avd7 d6A3lyC35MDYBqtXBJSmZqYH3IFRb8ad2PJKoa1bNtOl8y1WPNmQyZTevHrX1ZBCD8aqseBgljjChajTrc1UK0rdfk2wEH571Y/XtUovMqe1YdWyweyBkYTAZ7dziCmI+3VHMgX62MREkctHgMIvFZnrPsAatmFBj8TvFxWLRsUyopcen+CfOgJCQSvsY39ctynY+rPVqtQ+hDq84ANdjA8ubxtX7r0FLa+1i8+VFHF1t4wkLJ/wIEtRNHF12qrslchReht1slcIXDUbmUmIy7jT969aTlHkam/0aFOi5KUWLicv/Kqj7FkUJ2vV9SGgvt6aRKa4g0EPGbAXjwuw5+JpRZOOp2R+l3vuPtKy8lZfDBSTeilIzVxUSUA== 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: List-Subscribe: List-Unsubscribe: T24gTW9uLCAyMDI1LTAxLTIwIGF0IDIyOjA0ICswMjAwLCBOYWRhdiBBbWl0IHdyb3RlOgo+IAo+ IFdoYXQgYWJvdXQgdGhpcyBzY2VuYXJpbyBmb3IgaW5zdGFuY2U/Cj4gCj4gQ1BVMMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgQ1BVMcKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoCBDUFUyCj4gLS0tLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqAgLS0tLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCAtLS0t Cj4gKDEpIHVzZV9nbG9iYWxfYXNpZChtbSk6wqDCoMKgwqDCoMKgwqAgCj4gwqDCoMKgIG1tLT5j b250ZXh0LmFzaWRfdHJhbnMgPSBUOwo+IMKgwqDCoCBtbS0+Y29udGV4dC5nbG9iYWxfYXNpZCA9 IEc7Cj4gCj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgICgyKSBz d2l0Y2hfbW0oLi4uLCBuZXh0PW1tKToKPiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoCAqT2JzZXJ2ZXMgZ2xvYmFsX2FzaWQgPSBHCj4gwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgPT4gbG9hZHMgQ1IzIHdp dGggUENJRD1HCj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqAgPT4gZmlsbHMgVExCIHVuZGVyIEcuCj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgVExCIGNhY2hlcyBQVEVbRywgVl0gPSBQCj4gCQkJwqAg KGZvciBzb21lIHJlYXNvbikKPiAKPiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgICgz KQo+IGZsdXNoX3RsYl9tbV9yYW5nZShtbSk6Cj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgICpTZWVzIGdsb2JhbF9hc2lkID09Cj4gMAo+IMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgKHN0YWxlL29sZCB2YWx1ZSkKPiDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgPT4gZmx1c2hfdGxiX211bHRpKCkKPiDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgPT4gSVBJIGZsdXNoIGZvcgo+IGR5 bi4KPiAKCklmIHRoZSBUTEIgZmx1c2ggaXMgYWJvdXQgYSBwYWdlIHRhYmxlIGNoYW5nZSB0aGF0 CmhhcHBlbmVkIGJlZm9yZSBDUFVzIDAgYW5kIDEgc3dpdGNoZWQgdG8gdGhlIGdsb2JhbApBU0lE LCB0aGVuIENQVXMgMCBhbmQgMSB3aWxsIG5vdCBzZWUgdGhlIG9sZCBwYWdlCnRhYmxlIGNvbnRl bnRzIGFmdGVyIHRoZSBzd2l0Y2guCgpJZiB0aGUgVExCIGZsdXNoIGlzIGFib3V0IGEgcGFnZSB0 YWJsZSBjaGFuZ2UgdGhhdApoYXBwZW5lZCBhZnRlciB0aGUgdHJhbnNpdGlvbiB0byBhIGdsb2Jh bCBBU0lELApmbHVzaF90bGJfbW1fcmFuZ2UoKSBzaG91bGQgc2VlIHRoYXQgZ2xvYmFsIEFTSUQs CmFuZCBmbHVzaCBhY2NvcmRpbmdseS4KCldoYXQgYW0gSSBtaXNzaW5nPwoKPiDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgKDQpIElQSSBhcnJpdmVzIG9uIENQVTE6 Cj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgZmx1 c2hfdGxiX2Z1bmMoLi4uKTogCj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqAgaXNfZ2xvYmFsX2FzaWQoRyk/IHllcywKPiDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBza2lwIGludmFsaWRhdGU7IGJyb2Fk Y2FzdAo+IMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg IGZsdXNoIGFzc3VtZWQgdG8gY292ZXIgaXQuCj4gCj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoCAoNSkgSVBJIGNvbXBsZXRlcyBvbgo+IENQVTI6Cj4gwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgIER5bi4gQVNJRHMgYXJlCj4gZmx1c2hlZCwgCj4gwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGJ1dCBDUFUx4oCZcyBnbG9iYWwKPiBB U0lECj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIHdhcyBuZXZlcgo+ IGludmFsaWRhdGVkIQo+IAo+IMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoCAoNikgQ1BVMSB1c2VzIHN0YWxlIFRMQiBlbnRyaWVzIHVuZGVyIEFTSUQgRy4KPiDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBUTEIgY29udGlu dWVzIHRvIHVzZSBQVEVbRywgVl0gPSBQLCBhcyBpdAo+IMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIHdhcyBub3QgaW52YWxpZGF0ZWQuCj4gCj4gCj4g Cj4gCj4gCgotLSAKQWxsIFJpZ2h0cyBSZXZlcnNlZC4K