Date: Tue, 4 Apr 2017 14:34:29 -0400 From: Eric McCorkle <eric@metricspace.net> To: Dimitry Andric <dim@FreeBSD.org> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@FreeBSD.org> Subject: Re: Source of QEMU woes: CPUTYPE Message-ID: <25c71912-7eec-a174-9d9f-50280c3435e8@metricspace.net> In-Reply-To: <A5077163-17D6-4416-B52C-325027E5BBEB@FreeBSD.org> References: <ee20545b-9937-bbfd-ea33-ca7d4d3deb46@metricspace.net> <A5077163-17D6-4416-B52C-325027E5BBEB@FreeBSD.org>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --6O1qIcNBSMugx293PD2wOTgK1r00q2PgF Content-Type: multipart/mixed; boundary="gWvtJaQcvJSV6iXno68GOik4fiAJHBUSm"; protected-headers="v1" From: Eric McCorkle <eric@metricspace.net> To: Dimitry Andric <dim@FreeBSD.org> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@FreeBSD.org> Message-ID: <25c71912-7eec-a174-9d9f-50280c3435e8@metricspace.net> Subject: Re: Source of QEMU woes: CPUTYPE References: <ee20545b-9937-bbfd-ea33-ca7d4d3deb46@metricspace.net> <A5077163-17D6-4416-B52C-325027E5BBEB@FreeBSD.org> In-Reply-To: <A5077163-17D6-4416-B52C-325027E5BBEB@FreeBSD.org> --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 <eric@metricspace.net> 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--
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