From: Greg KH <gregkh@linuxfoundation.org>
To: speck@linutronix.de
Subject: [MODERATED] Re: [patch 8/8] MDS basics 8
Date: Tue, 19 Feb 2019 15:17:58 +0100 [thread overview]
Message-ID: <20190219141758.GA17033@kroah.com> (raw)
In-Reply-To: <20190219125346.509128952@linutronix.de>
On Tue, Feb 19, 2019 at 01:44:14PM +0100, speck for Thomas Gleixner wrote:
> +Mitigation control on the kernel command line
> +---------------------------------------------
> +
> +The kernel command line allows to control the MDS mitigations at boot
> +time with the option "mds=". The valid arguments for this option are:
> +
> + ============ =============================================================
> + full Provides all available mitigations for the MDS vulnerability
> + vulnerability, unconditional CPU buffer clearing on exit to
> + userspace and when entering a VM.
> +
> + It does not automatically disable SMT.
> +
> + off Disables MDS mitigations completely.
> +
> + ============ =============================================================
> +
> +The default is 'full'. For details see :ref:`cpu_buffer_clear_full`.
I think default is 'auto' according to the patch that enabled it :)
thanks,
greg k-h
next prev parent reply other threads:[~2019-02-19 14:18 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-19 12:44 [patch 0/8] MDS basics 0 Thomas Gleixner
2019-02-19 12:44 ` [patch 1/8] MDS basics 1 Thomas Gleixner
2019-02-19 14:00 ` [MODERATED] " Borislav Petkov
2019-02-19 12:44 ` [patch 2/8] MDS basics 2 Thomas Gleixner
2019-02-19 12:44 ` [patch 3/8] MDS basics 3 Thomas Gleixner
2019-02-19 16:04 ` [MODERATED] " Andi Kleen
2019-02-19 21:44 ` Thomas Gleixner
2019-02-19 22:13 ` Thomas Gleixner
2019-02-20 16:59 ` [MODERATED] " Andi Kleen
2019-02-20 21:28 ` Thomas Gleixner
2019-02-19 12:44 ` [patch 4/8] MDS basics 4 Thomas Gleixner
2019-02-19 13:54 ` [MODERATED] " Andrew Cooper
2019-02-19 14:02 ` Thomas Gleixner
2019-02-19 14:07 ` Thomas Gleixner
2019-02-19 16:09 ` [MODERATED] " Andi Kleen
2019-02-19 16:17 ` Peter Zijlstra
2019-02-19 17:16 ` Thomas Gleixner
2019-02-19 16:08 ` [MODERATED] " Andi Kleen
2019-02-19 16:23 ` Andrew Cooper
2019-02-19 16:07 ` Andi Kleen
2019-02-19 18:29 ` Thomas Gleixner
2019-02-19 12:44 ` [patch 5/8] MDS basics 5 Thomas Gleixner
2019-02-19 15:07 ` Thomas Gleixner
2019-02-19 16:13 ` [MODERATED] " Andi Kleen
2019-02-19 17:37 ` Thomas Gleixner
2019-02-20 0:05 ` Thomas Gleixner
2019-02-19 16:03 ` [MODERATED] " Andi Kleen
2019-02-19 17:40 ` Thomas Gleixner
2019-02-19 17:44 ` [MODERATED] " Andrew Cooper
2019-02-19 17:52 ` Thomas Gleixner
2019-02-19 12:44 ` [patch 6/8] MDS basics 6 Thomas Gleixner
2019-02-19 12:44 ` [patch 7/8] MDS basics 7 Thomas Gleixner
2019-02-19 12:44 ` [patch 8/8] MDS basics 8 Thomas Gleixner
2019-02-19 14:17 ` Greg KH [this message]
2019-02-19 14:22 ` Thomas Gleixner
2019-02-19 17:27 ` [MODERATED] " Andrew Cooper
2019-02-19 14:03 ` [MODERATED] Re: [patch 0/8] MDS basics 0 Andrew Cooper
2019-02-19 14:09 ` Thomas Gleixner
2019-02-19 14:10 ` [MODERATED] " Tyler Hicks
2019-02-19 15:56 ` Andi Kleen
2019-02-19 17:42 ` Thomas Gleixner
2019-02-21 16:14 ` [MODERATED] Encrypted Message Jon Masters
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