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 D0F7DC38A02 for ; Sat, 29 Oct 2022 09:45:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229587AbiJ2Jp3 (ORCPT ); Sat, 29 Oct 2022 05:45:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229500AbiJ2JpZ (ORCPT ); Sat, 29 Oct 2022 05:45:25 -0400 Received: from mail-ej1-x62b.google.com (mail-ej1-x62b.google.com [IPv6:2a00:1450:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C965358B4E for ; Sat, 29 Oct 2022 02:45:23 -0700 (PDT) Received: by mail-ej1-x62b.google.com with SMTP id f27so18326051eje.1 for ; Sat, 29 Oct 2022 02:45:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=j33e+agco87KfecyN9tcnlEsDHXnUiSrxhuNYuLnEbI=; b=BECNFhV3tyhiIUHIPg6RbRBQRokZOoJswy9sq89QNVx8UPCf89gSNaW2XZ26ZtDiTZ VkThBxv9DdKARPofXB7//zeW3Xl8Q+SlqhVLSe2SAJ5IjCJ3DMdWJevLq3oPxsBxobRu V6iy//FyeztaiXeJ7wEmG4JDFl5z9IQj7fXtWEyOJHfRUV4iIIaBPKEedHdobG6QYl4y Rbdkhwp+LcPbI8KpkuEktXCqiMyQ3oovD9rd/YPOikeu1mdBES10+wkxsnLFpR4rhvkB 13oqfDGc421p9AKjFSwgrw2DfpR4DgKwsctWj1W0sMb/SD8TO0ywd4iKBJ8tq9EBZAGO fmQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=j33e+agco87KfecyN9tcnlEsDHXnUiSrxhuNYuLnEbI=; b=hTBg5MHFVLqXvUAYhhIcKbOXU8fZ1l/jI1h3LbV1aOaidu+ZaMn03Q1dxxgrvJjDQK 2IoUrrrKu6VGJqIdsMHrc7kfbqy+Xq2sAntAJPyBEnlvQxlgJJCZZi+Ra6wSVXW552V/ sA0vscQ7FHtLHxGiwP/bEtzjQpbF/l9rF0I/mbJS4tsgq7Wd1Uf/EFSR/fbe8amTQ/o7 e9T/7moi6b6HyUZWGBQ4NUBtdoBa0F00bHERYqfg3GxOZDylKvvLzRmCmxl1Y8scraqq /IamrP+FVSrH1DUMaEJCCG66wqxErp16/YV988xeRjKNK7Eq9DOOYN2tCzLNYepzGrA8 +1fg== X-Gm-Message-State: ACrzQf0o135d36jOAUkgGc5Rk+itRTlMqQWkPTbo5TDXZQvvY868c0SQ 8RBNUdemcHVQwuJ4i6sFyg== X-Google-Smtp-Source: AMsMyM6u3pe09FpO+Z8d/MO+IrQbt4TXhCFNqj9hnocoegqaJDn+QIhIb4EyEZbiuIdqzWbCbNYQJA== X-Received: by 2002:a17:907:9705:b0:7ad:b14f:d89e with SMTP id jg5-20020a170907970500b007adb14fd89emr2043261ejc.745.1667036722277; Sat, 29 Oct 2022 02:45:22 -0700 (PDT) Received: from p183 ([46.53.250.206]) by smtp.gmail.com with ESMTPSA id fs29-20020a170907601d00b0078c1e174e11sm479034ejc.136.2022.10.29.02.45.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 29 Oct 2022 02:45:21 -0700 (PDT) Date: Sat, 29 Oct 2022 12:45:19 +0300 From: Alexey Dobriyan To: Bagas Sanjaya Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH] selftests/x86: add "ffff8" -- kernel memory scanner Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Oct 29, 2022 at 09:14:44AM +0700, Bagas Sanjaya wrote: > On Fri, Oct 28, 2022 at 10:33:49PM +0300, Alexey Dobriyan wrote: > > > > I've tested it with kernel patch which installs rogue page and it was found. > > > > $ ./a.out -h > > usage: ./a.out [-f] [-r] [-n N] [-s S] > > -f: sequential scan > > -r: random scan (default) > > -n: use N threads (default: $(nproc)) > > -s: lowest address shift (default: 47) > > -t: time to run (default: 256 seconds) > > > > Intended usages are: > > > > $ ./a.out -f # full scan on all cores > > or > > $ ./a.out -r -t ... # time limited random scan for QA test > > > > The executable name is a.out, really? This is copypasta from my internal git. It will be named ffff8_64 by the build system.