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 X-Spam-Level: X-Spam-Status: No, score=-4.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80318C4727E for ; Wed, 30 Sep 2020 10:44:03 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DDBDD2074A for ; Wed, 30 Sep 2020 10:44:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="NsNJkhxc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DDBDD2074A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=3ASU9ornGRrM/uQP7qs2Y+NAbNGdqZyOA6EiIfRvz7A=; b=NsNJkhxc2NGXKwPCSVXRZRhcs pwMHRK1bxbz+u4vn2k+Vo0tUCAPDXthMaa1hYkTwQH/O/mrHYeuWt5ZVUsSG7BTPAaIwEZA9ihl6k 5sacxJSPckh1cGgAhZ6KOxdieQdryXRTMYhjP4YCwP5EAeU0Mmdlp4R6qw2YbVuJy0bCZQ5kEpq+H v1Nsntrd9qyIBwzljKFDkIFUH3pxGGGNRoNAuA9cxw2tLaNab+0HdzQ0H469A/BYyo8eaFYbLrQFQ iTZm3xtoGIPY4TMa2fo1b3XVrqVLKTMntX1Upfv518FA2BE3P15RCas6DNvIex43j0JJyl/g15RzH qevE8pnHQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNZaT-0002HG-OF; Wed, 30 Sep 2020 10:43:53 +0000 Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNZaJ-0002EU-BE; Wed, 30 Sep 2020 10:43:43 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id E04C5300446; Wed, 30 Sep 2020 12:43:39 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id C7F922022B66B; Wed, 30 Sep 2020 12:43:39 +0200 (CEST) Date: Wed, 30 Sep 2020 12:43:39 +0200 From: Peter Zijlstra To: Mike Rapoport Subject: Re: [PATCH v6 5/6] mm: secretmem: use PMD-size pages to amortize direct map fragmentation Message-ID: <20200930104339.GK2611@hirez.programming.kicks-ass.net> References: <20200924132904.1391-1-rppt@kernel.org> <20200924132904.1391-6-rppt@kernel.org> <20200925074125.GQ2628@hirez.programming.kicks-ass.net> <20200929130529.GE2142832@kernel.org> <20200929141216.GO2628@hirez.programming.kicks-ass.net> <20200930102031.GJ2142832@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200930102031.GJ2142832@kernel.org> X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , songliubraving@fb.com, David Hildenbrand , Catalin Marinas , Dave Hansen , linux-mm@kvack.org, Will Deacon , linux-kselftest@vger.kernel.org, "H. Peter Anvin" , Christopher Lameter , Idan Yaniv , Thomas Gleixner , Elena Reshetova , linux-arch@vger.kernel.org, Tycho Andersen , linux-nvdimm@lists.01.org, Shuah Khan , x86@kernel.org, Matthew Wilcox , Mike Rapoport , Ingo Molnar , Michael Kerrisk , Arnd Bergmann , James Bottomley , Borislav Petkov , Alexander Viro , Andy Lutomirski , Paul Walmsley , "Kirill A. Shutemov" , Dan Williams , linux-arm-kernel@lists.infradead.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Palmer Dabbelt , linux-fsdevel@vger.kernel.org, Andrew Morton Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Wed, Sep 30, 2020 at 01:20:31PM +0300, Mike Rapoport wrote: > I tried to dig the regression report in the mailing list, and the best I > could find is > > https://lore.kernel.org/lkml/20190823052335.572133-1-songliubraving@fb.com/ > > which does not mention the actual performance regression but it only > complaints about kernel text mapping being split into 4K pages. > > Any chance you have the regression report handy? I think the saga started here: 20190820075128.2912224-1-songliubraving@fb.com 20190820202314.1083149-1-songliubraving@fb.com 20190823052335.572133-1-songliubraving@fb.com After that Thomas did the patch I referred to earlier and I endeavoured to rewrite x86-ftrace. I added Song to CC, maybe he can remember more. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv