From owner-freebsd-hackers@freebsd.org Tue Apr 4 18:34:35 2017 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0FEDDD2ED3C for ; Tue, 4 Apr 2017 18:34:35 +0000 (UTC) (envelope-from eric@metricspace.net) Received: from mail.metricspace.net (mail.metricspace.net [IPv6:2001:470:1f11:617::107]) by mx1.freebsd.org (Postfix) with ESMTP id DA93CE0A; Tue, 4 Apr 2017 18:34:34 +0000 (UTC) (envelope-from eric@metricspace.net) Received: from [IPv6:2001:470:1f11:617:3210:b3ff:fe77:ca3f] (unknown [IPv6:2001:470:1f11:617:3210:b3ff:fe77:ca3f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) (Authenticated sender: eric) by mail.metricspace.net (Postfix) with ESMTPSA id 113491A65; Tue, 4 Apr 2017 18:34:33 +0000 (UTC) Subject: Re: Source of QEMU woes: CPUTYPE To: Dimitry Andric References: Cc: "freebsd-hackers@freebsd.org" From: Eric McCorkle Message-ID: <25c71912-7eec-a174-9d9f-50280c3435e8@metricspace.net> Date: Tue, 4 Apr 2017 14:34:29 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="6O1qIcNBSMugx293PD2wOTgK1r00q2PgF" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Apr 2017 18:34:35 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --6O1qIcNBSMugx293PD2wOTgK1r00q2PgF Content-Type: multipart/mixed; boundary="gWvtJaQcvJSV6iXno68GOik4fiAJHBUSm"; protected-headers="v1" From: Eric McCorkle To: Dimitry Andric Cc: "freebsd-hackers@freebsd.org" Message-ID: <25c71912-7eec-a174-9d9f-50280c3435e8@metricspace.net> Subject: Re: Source of QEMU woes: CPUTYPE References: In-Reply-To: --gWvtJaQcvJSV6iXno68GOik4fiAJHBUSm Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 04/04/2017 14:31, Dimitry Andric wrote: > On 4 Apr 2017, at 14:34, Eric McCorkle wrote: >=20 > Out of interest, what does "llvm-tblgen -version | grep 'Host CPU'" > show? (This is a simple way to see what LLVM auto-detects.) broadwell >=20 >> I'm posting this here, as it's somewhat non-obvious, and probably ough= t >> to be documented somewhere. >=20 > I usually find it clearer to specify the exact CPU type myself, for > example CPUTYPE?=3Dcore-avx2 (which is an alias for "haswell"). You ca= n > also specify a lower CPUTYPE to build the world that you are going to > run inside QEMU. >=20 I have a standard config for my laptops, so that's why it has CPUTYPE?=3Dnative --gWvtJaQcvJSV6iXno68GOik4fiAJHBUSm-- --6O1qIcNBSMugx293PD2wOTgK1r00q2PgF Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEzzhiNNveVG6nWjcH1w0wQIFco2cFAljj5zUACgkQ1w0wQIFc o2d2fQ/+O2WaXq7gEgeHeNZuea7n6z7VbE1oAKey93wP8bHoJslIHUYcKX68DQK+ Pw5medo2hHLuvJhgdkRDiG8LyvwBXO6VIaHWUTU+jRKtC+DC1u97pr3LplAciWZl bYlBT1QdUaNx6tWI/W8m7J5vc6IOSHTwdpzwXPIbWAqv9mTrKWFH3KwLk5LUyQhC mdCjoFr/WbTGzRgRtU4nlja7g54hSZ3KV/9RJ/ill4BvXjuNeq+jIqAyYicp1aqW uvePggvJo46RihrLoEdsiyOfWmf62ZrlqSl37zEQ1yEKVsIs9plbZDlJxFlt35jy euORjA6z/5hOZEyzWtbHKntM2XzR88jQAxXP22ghZbVNM7AGhnep5MbvpsiZMn86 ginb2busEhEWi9ANqWXCRKzHIIs7GjB3sEBsIW8rmTLJ5Z4kXjOreVFWGxa52H4b 5xMTiGp/gq48RYYAIHdVVjd0yrKTMRgvPG+ExKb/I8I5Mjws8pg43qOQvBEAvZk0 gDkBfznCXCe2l5fnWQWJCZIDW1H/yRkEAd3OuKz0Vk40bVx7zfsgT0xzjDAMjR0d jCfmpOWyFMCI7UlVC+AAKLcdPeEEJOs6D8PLN++sC+b9/i8OdtFIgfPzqZFP6Tir aEy+gsygtsoAqRLMjt8lHh0JhyAXbrBjVKf0Rx7+YxrMut+jXa4= =Tw7J -----END PGP SIGNATURE----- --6O1qIcNBSMugx293PD2wOTgK1r00q2PgF--