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From: Thomas Gleixner <tglx@linutronix.de>
To: speck@linutronix.de
Subject: Re: [patch V6 05/14] MDS basics 5
Date: Fri, 8 Mar 2019 07:37:56 +0100 (CET)	[thread overview]
Message-ID: <alpine.DEB.2.21.1903080736190.1646@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20190307235921.GG7535@tassilo.jf.intel.com>

On Thu, 7 Mar 2019, speck for Andi Kleen wrote:
> On Fri, Mar 01, 2019 at 10:47:43PM +0100, speck for Thomas Gleixner wrote:
> > From: Andi Kleen <ak@linux.intel.com>
> > Subject: [patch V6 05/14] x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
> > 
> > X86_FEATURE_MD_CLEAR is a new CPUID bit which is set when microcode
> > provides the mechanism to invoke a flush of various exploitable CPU buffers
> > by invoking the VERW instruction.
> > 
> > Hand it through to guests so they can adjust their mitigations.
> > 
> > This also requires corresponding qemu changes, which are available
> > separately.
> 
> This patch is not complete. You also need some variant of 
> 
> x86/speculation/mds: Handle VMENTRY clear for CPUs without l1tf

650b68a0622f ("x86/kvm/vmx: Add MDS protection when L1D Flush is not active")

Thanks,

	tglx

  reply	other threads:[~2019-03-08  6:37 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-01 21:47 [patch V6 00/14] MDS basics 0 Thomas Gleixner
2019-03-01 21:47 ` [patch V6 01/14] MDS basics 1 Thomas Gleixner
2019-03-02  0:06   ` [MODERATED] " Frederic Weisbecker
2019-03-01 21:47 ` [patch V6 02/14] MDS basics 2 Thomas Gleixner
2019-03-02  0:34   ` [MODERATED] " Frederic Weisbecker
2019-03-02  8:34   ` Greg KH
2019-03-05 17:54   ` Borislav Petkov
2019-03-01 21:47 ` [patch V6 03/14] MDS basics 3 Thomas Gleixner
2019-03-02  1:12   ` [MODERATED] " Frederic Weisbecker
2019-03-01 21:47 ` [patch V6 04/14] MDS basics 4 Thomas Gleixner
2019-03-02  1:28   ` [MODERATED] " Frederic Weisbecker
2019-03-05 14:52     ` Thomas Gleixner
2019-03-06 20:00   ` [MODERATED] " Andrew Cooper
2019-03-06 20:32     ` Thomas Gleixner
2019-03-07 23:56   ` [MODERATED] " Andi Kleen
2019-03-08  0:36     ` Linus Torvalds
2019-03-01 21:47 ` [patch V6 05/14] MDS basics 5 Thomas Gleixner
2019-03-02  1:37   ` [MODERATED] " Frederic Weisbecker
2019-03-07 23:59   ` Andi Kleen
2019-03-08  6:37     ` Thomas Gleixner [this message]
2019-03-01 21:47 ` [patch V6 06/14] MDS basics 6 Thomas Gleixner
2019-03-04  6:28   ` [MODERATED] Encrypted Message Jon Masters
2019-03-05 14:55     ` Thomas Gleixner
2019-03-01 21:47 ` [patch V6 07/14] MDS basics 7 Thomas Gleixner
2019-03-02  2:22   ` [MODERATED] " Frederic Weisbecker
2019-03-05 15:30     ` Thomas Gleixner
2019-03-06 15:49       ` [MODERATED] " Frederic Weisbecker
2019-03-06  5:21   ` Borislav Petkov
2019-03-01 21:47 ` [patch V6 08/14] MDS basics 8 Thomas Gleixner
2019-03-03  2:54   ` [MODERATED] " Frederic Weisbecker
2019-03-04  6:57   ` [MODERATED] Encrypted Message Jon Masters
2019-03-04  7:06     ` Jon Masters
2019-03-04  8:12       ` Jon Masters
2019-03-05 15:34     ` Thomas Gleixner
2019-03-06 16:21       ` [MODERATED] " Jon Masters
2019-03-06 14:11   ` [MODERATED] Re: [patch V6 08/14] MDS basics 8 Borislav Petkov
2019-03-01 21:47 ` [patch V6 09/14] MDS basics 9 Thomas Gleixner
2019-03-06 16:14   ` [MODERATED] " Frederic Weisbecker
2019-03-01 21:47 ` [patch V6 10/14] MDS basics 10 Thomas Gleixner
2019-03-04  6:45   ` [MODERATED] Encrypted Message Jon Masters
2019-03-05 18:42   ` [MODERATED] Re: [patch V6 10/14] MDS basics 10 Andrea Arcangeli
2019-03-06 19:15     ` Thomas Gleixner
2019-03-06 14:31   ` [MODERATED] " Borislav Petkov
2019-03-06 15:30     ` Thomas Gleixner
2019-03-06 18:35       ` Thomas Gleixner
2019-03-06 19:34         ` [MODERATED] Re: " Borislav Petkov
2019-03-01 21:47 ` [patch V6 11/14] MDS basics 11 Thomas Gleixner
2019-03-01 21:47 ` [patch V6 12/14] MDS basics 12 Thomas Gleixner
2019-03-04  5:47   ` [MODERATED] Encrypted Message Jon Masters
2019-03-05 16:04     ` Thomas Gleixner
2019-03-05 16:40   ` [MODERATED] Re: [patch V6 12/14] MDS basics 12 mark gross
2019-03-06 14:42   ` Borislav Petkov
2019-03-01 21:47 ` [patch V6 13/14] MDS basics 13 Thomas Gleixner
2019-03-03  4:01   ` [MODERATED] " Josh Poimboeuf
2019-03-05 16:04     ` Thomas Gleixner
2019-03-05 16:43   ` [MODERATED] " mark gross
2019-03-01 21:47 ` [patch V6 14/14] MDS basics 14 Thomas Gleixner
2019-03-01 23:48 ` [patch V6 00/14] MDS basics 0 Thomas Gleixner
2019-03-04  5:30 ` [MODERATED] Encrypted Message Jon Masters

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