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 5EDF5C433FE for ; Wed, 2 Nov 2022 23:30:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231574AbiKBXak (ORCPT ); Wed, 2 Nov 2022 19:30:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231436AbiKBXaY (ORCPT ); Wed, 2 Nov 2022 19:30:24 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F6FD1A3B6 for ; Wed, 2 Nov 2022 16:23:31 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id k7so302509pll.6 for ; Wed, 02 Nov 2022 16:23:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.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=D5UOn18RrY1kkOpbW2QL63D1zwjztb/uPifmt+JHluE=; b=FR0ybTgIZjoKnZi5Mib7oQrXwF2+wv6m5cxf/vvOSW1O4EZxFc0m6ycK0oRCc8t8MP d3lXB7sehh6iIySdXjDv6fFaY9MSAgqgbv+MzHn1BCYdVN//xsVjou+XkCjjPBdDc7dl hV39EtCrLfcw3fF+vNitKiCMLJpnClRAuMLfaYXKWbWLaXS5L88cek7gWO/OIYo6pPwP jcwt4/hO63/uNplZUHnMkFdiRyc6wcsCkD2wSsTH3HOKutqTC0Yk6e0rHopsv8P1iBOF Uv0/nrIxOPTgaflFegcV7vkCAFupfsgItZekTiX7+q2K7bS7BqKEhwMnPS6eGOSLearQ R32Q== 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=D5UOn18RrY1kkOpbW2QL63D1zwjztb/uPifmt+JHluE=; b=teYezDfETzbZL+Cq5vpu2kdWAjDw0ItsCpkOSqbpYRwn3/Kt0OEssldTgKMg+5Bkc5 rYXpt+SR2ak2LdGchKxllQnZriMyFvLR8WUDmiOdBi2U4SMhD4r19kA4B884Rj98BSqj 7A3W6vvwTsVKefYXqpq2Jlcz3gMZrT+59ksl6K0zMHGR6K8rrqCVjC4Gpeol6dgb0ZOe 0mZXvAbqKP3k/McAF8BPexoi09yJpaPQn4EEc78+/le7bh0GvAVUBO3yllO0NwNN+Q4M 4jK6CPAlHgxvr3zNtfp8qrPToltTLgTVjka1aPEOXymwYiCUsmqeBO1aVQnj8+NVqDBl BHVg== X-Gm-Message-State: ACrzQf1VbekNBVtFD0ziVMe3Ws64+nuhl4c9lxtXIJicIDwHwpjZhJFn qGYj7tGh3AamXxnRAU93FAE0Kg== X-Google-Smtp-Source: AMsMyM4Pgwbdgb7e4rINkonA5nQchbcJL7kQyKebJ3spcEHUjs9rcRheSadqMe1cQ99fQ00EkIvhgw== X-Received: by 2002:a17:902:ea02:b0:181:f8d2:1c2b with SMTP id s2-20020a170902ea0200b00181f8d21c2bmr27618378plg.107.1667431373021; Wed, 02 Nov 2022 16:22:53 -0700 (PDT) Received: from google.com (7.104.168.34.bc.googleusercontent.com. [34.168.104.7]) by smtp.gmail.com with ESMTPSA id e10-20020a170902784a00b00172fad607b3sm8763812pln.207.2022.11.02.16.22.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Nov 2022 16:22:52 -0700 (PDT) Date: Wed, 2 Nov 2022 23:22:49 +0000 From: Sean Christopherson To: Colton Lewis Cc: kvm@vger.kernel.org, pbonzini@redhat.com, maz@kernel.org, dmatlack@google.com, oupton@google.com, ricarkol@google.com Subject: Re: [PATCH v9 1/4] KVM: selftests: implement random number generator for guest code Message-ID: References: <20221102160007.1279193-1-coltonlewis@google.com> <20221102160007.1279193-2-coltonlewis@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221102160007.1279193-2-coltonlewis@google.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Wed, Nov 02, 2022, Colton Lewis wrote: > Implement random number generator for guest code to randomize parts > of the test, making it less predictable and a more accurate reflection > of reality. > > The random number generator chosen is the Park-Miller Linear > Congruential Generator, a fancy name for a basic and well-understood > random number generator entirely sufficient for this purpose. Each > vCPU calculates its own seed by adding its index to the seed provided. > > Signed-off-by: Colton Lewis > --- Reviewed-by: Sean Christopherson