Date: Sun, 18 Feb 2018 11:50:01 -0500 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: David Marec <david.marec@davenulle.org> Cc: freebsd-stable@freebsd.org Subject: Re: stable/11 r329462 - Meltdown/Spectre MFC questions Message-ID: <20180218165001.whbmonks7fq27mgq@mutt-hbsd> In-Reply-To: <58099107-bc04-8ad9-3909-16bf5297dd2b@davenulle.org> References: <20180217194726.GA79666@icarus.home.lan> <58099107-bc04-8ad9-3909-16bf5297dd2b@davenulle.org>
next in thread | previous in thread | raw e-mail | index | archive | help
--lqdufu4v222lgprr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Feb 18, 2018 at 05:04:55PM +0100, David Marec wrote: > On 17.02.2018 20:47, Jeremy Chadwick wrote: > > hw.ibrs_disable > > - Description: Disable Indirect Branch Restricted Speculation > > - Loader tunable and sysctl tunable (read-write) > > - Integer > > - Default value: unsure. Variable declaration has 1 but > > SYSCTL_PROC() macro has 0. > >=20 >=20 >=20 > Strange thing is that tweaking `hw.ibrs_disable` has no effect on > `hw.ibrs_active` on my side. Did you install the latest Intel microcode update? Thanks, --=20 Shawn Webb Cofounder and Security Engineer HardenedBSD Tor-ified Signal: +1 443-546-8752 GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE --lqdufu4v222lgprr Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEKrq2ve9q9Ia+iT2eaoRlj1JFbu4FAlqJrrQACgkQaoRlj1JF bu721xAAvuGIXR88q68u0gQRERDgCiUQoKO210+uTdu9JDfPSELD3O4w9eD8DPhm UdX3blBT8cz56f/kVoRhV/og8m4sp2RqJL+qBru2gg8APryugjiAvRFhlG0JVfnf 89gxEAx8aUmNbNW3c5U++kJZTMjE8TKUTZahxc1KaBsujFglQP+r37aCz7wvd+k6 A9dgmG/BqG4bs1VlA9iXt0MhFhq3ttt2KcUKR61DEtdaRV4QZMgHIKcljloAvaCv jKehvZ5gPtd+U4RaB8Yae1zmiHV3EJY2YIKZ0g141RyPpIbq6FXbiluGYgFBpCS6 MWS8wN/ip+VCx3R8Oqz9mp0Q5kgwfVwy1C+Gypkht8iuez33kwyJQv32BwwE5RVh 50Qvn2iugRzkxbj7p0P+hcc1VxLaJOukIPHd4OEwGhXS9vG3A5xGCkf8W2m6HkmL +CtQhroD5Rm1t5qtlB4fW0PatLLL57liMKg1Qk8IZDDYAuYQOKsVbkuWVBJRcVGP 8MdmDQ3lu6BzRg3jShI1UpqICLtZBtop0vsbERtMcmoE4idp4XYnqMAhy1p0+D/p MtUXXCAl6iW399/I+XQAcRhBC24XAsaok8VoDBp13iEzjJu9jPuBKSX/U0q4Tzj8 bmndISWEZHPmR9tMT7hsoj63eUZVVFM7/Q162XpJtWeZCIm/c50= =NV5L -----END PGP SIGNATURE----- --lqdufu4v222lgprr--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20180218165001.whbmonks7fq27mgq>