Date: Mon, 11 Apr 2016 09:01:38 -0400 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: Anish Gupta <anish@FreeBSD.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r297806 - head/sys/amd64/vmm/amd Message-ID: <20160411130138.GA56696@mutt-hardenedbsd> In-Reply-To: <201604110509.u3B59iFs000620@repo.freebsd.org> References: <201604110509.u3B59iFs000620@repo.freebsd.org>
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[-- Attachment #1 --] On Mon, Apr 11, 2016 at 05:09:44AM +0000, Anish Gupta wrote: > Author: anish > Date: Mon Apr 11 05:09:43 2016 > New Revision: 297806 > URL: https://svnweb.freebsd.org/changeset/base/297806 > > Log: > Allow guest writes to AMD microcode update[0xc0010020] MSR without updating actual hardware MSR. This allows guest microcode update to go through which otherwise failing because wrmsr() was returning EINVAL. Pardon my ignorance, but does that mean that prior to this commit, a bhyve guest on AMD could modify hardware? Thanks, -- Shawn Webb HardenedBSD GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJXC6AwAAoJEGqEZY9SRW7uZsEQALo7TkGvM2miimCzIpx8cxUp tQTGPN9Xm0VBM8cdQ7OLEkpNbQSKuG8sqXpN53l9gufLkVeQxzexCx5h8i2Df7/E W9R+ANKbKcYmLXavTHRfm3BCxuwb/00rvtmXqtfQAoL/Ph1f4YI2LQSLyXNP6IxY aKm510XmvkAUo3kA8rzJ/SZHU58/C7hCbk3Ky3Vn0V0sZeQWtkrJ9bReWMnzbzOI rooVe+LmIqxrUwYjQaavJqKKY88RkFKQGf4zuRKE8HTqigTeolimRjkR5mZXHNsb dS3SsoG5bpeQWm5rPEBpBDfYQnZK+WUOeDWL8EB1Za/PIhryspZC4MY9FsY/BTY0 iw+cC0TNqZzo4qOU7WaU9DJ0meEfbhizUfX6wYXDnifFxF/xlkxkAFuhoSgsTThU VoqMhL+qeoapaXTlV+rwDlt/9LP6fb3KaB6oYYWip799aZNmYcYr/KVEl9fznUWm KT/RWyqhlgp/Mif6F7v1ND6MB9XPiwax1iyAbTFTUCUd5I7quVSzYE6zQBR7s2rj mTjFJ4rPgKM/8My4pSY6LDAMEmMfRiYiV/1Bx/gXnHG0k5VayY6kk1ZNYix7J+Hr Moojs/miMOZUy/jsewfE+yZqFGEsnMNCR6D4qEzaoCQF4scpnAai2XzjDmQWZjWj sItV5l9upa5nFGGh1fpS =S61J -----END PGP SIGNATURE-----
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