Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp4336628ybl; Mon, 26 Aug 2019 08:58:08 -0700 (PDT) X-Google-Smtp-Source: APXvYqyyb0grJ9Tk+qy0NhldTSm8/0PoRNSdoJfJR+xhQjkVKXI/yMUafSf3C9flVe447ZwMwl+E X-Received: by 2002:a65:6497:: with SMTP id e23mr16438198pgv.89.1566835088199; Mon, 26 Aug 2019 08:58:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566835088; cv=none; d=google.com; s=arc-20160816; b=CZwv8M37b2whomGCvvaN0PU1MBh//qx/MlwCwjjXYAnhs2E40MiTT543m8L7Duaer0 GNaGSCp05ww20I/Xvgl01qS90rFwHlhazlBWCTPNN+hTb9cXq8fU0fm2/UXupPf9JFAx U/Pn18ywDWBfVpYTEousm4m5cgl9y44GbVtinRhLC/W/S6W8k2pn9jHmMhJ1I+oFR6uj 5MWgPMCPnOyj2fZSu5aorqFDMGCNljjbFZ2ReatsbJPlYVKSPDxm2vh48/NAA8IS+7ZI DlnR7A9ONvQ2H3gVgCCS8pAgbeKIgVybGdYAPeA7sKoyd3OtlPoJodXMufm4hUexMgt5 fyaQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=DFIqplUg1gtGOgX+hAhprEEONU/ASaS2/feK+miACH0=; b=r1iwE2vqV1m8jCAk6ZxJhPC8f+h7CjfwOv42SXeI1huGLIoxamvFcfyQkW6t0MJ7EM D2YX+fDNI2RqN9rmoOF86YlPFooY32N9tHmD5Dd8KFU7ZpmQ1YBR3N/2SZLpN2Kr39zZ dTZzQLmmGSEEyD2RziYHGGZ2RM5qF9GxNqVFPrMAeOjHs15FvKGXraOLNsAp4KY7CBzh kvtqWCNLSTNYdU2jeYfk6oIP2cu31Ij2ijO6XS+CHOQwJU1T8auyGFUGu3ujYCQzquQ8 LCFP6/DHnLX0QY/euD4+FWB6W8kLRCVwfW2Vs4x+QIYmotPHbysL/ZYg6U67vI3m9SIt EM+g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e18si9125643pgv.139.2019.08.26.08.57.51; Mon, 26 Aug 2019 08:58:08 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731513AbfHZP4z (ORCPT + 99 others); Mon, 26 Aug 2019 11:56:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:60092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727864AbfHZP4z (ORCPT ); Mon, 26 Aug 2019 11:56:55 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 899FD20828; Mon, 26 Aug 2019 15:56:53 +0000 (UTC) Date: Mon, 26 Aug 2019 11:56:51 -0400 From: Steven Rostedt To: Nadav Amit Cc: Peter Zijlstra , Song Liu , LKML , Linux-MM , "kernel-team@fb.com" , "stable@vger.kernel.org" , Thomas Gleixner , Dave Hansen , Andy Lutomirski , Daniel Bristot de Oliveira Subject: Re: [PATCH] x86/mm: Do not split_large_page() for set_kernel_text_rw() Message-ID: <20190826115651.43c9bde3@gandalf.local.home> In-Reply-To: <31AB5512-F083-4DC3-BA73-D5D65CBC410A@vmware.com> References: <20190823052335.572133-1-songliubraving@fb.com> <20190823093637.GH2369@hirez.programming.kicks-ass.net> <20190826073308.6e82589d@gandalf.local.home> <31AB5512-F083-4DC3-BA73-D5D65CBC410A@vmware.com> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 26 Aug 2019 15:41:24 +0000 Nadav Amit wrote: > > Anyway, I believe Nadav has some patches that converts ftrace to use > > the shadow page modification trick somewhere. > > For the record - here is my previous patch: > https://lkml.org/lkml/2018/12/5/211 FYI, when referencing older patches, please use lkml.kernel.org or lore.kernel.org, lkml.org is slow and obsolete. ie. http://lkml.kernel.org/r/20181205013408.47725-9-namit@vmware.com -- Steve