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From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: speck@linutronix.de
Subject: [MODERATED] Re: [PATCH v4 7/8] [PATCH v4 7/8] Linux Patch #7
Date: Wed, 27 Jun 2018 10:32:52 -0400	[thread overview]
Message-ID: <20180627143251.GC21873@char.US.ORACLE.com> (raw)
In-Reply-To: <alpine.DEB.2.21.1806271248110.1781@nanos.tec.linutronix.de>

On Wed, Jun 27, 2018 at 12:52:57PM +0200, speck for Thomas Gleixner wrote:
> On Sat, 23 Jun 2018, speck for konrad.wilk_at_oracle.com wrote:
> 
> > x86/KVM/VMX: Add framework for having disjoint amount of MSRs to save/restore
> 
> I have a hard time to find the framework ...

I am being optimistic :-)
> 
> Changed that to:
> 
> x86/KVM/VMX: Extend add_atomic_switch_msr() to allow VMENTER only MSRs
> 
> The IA32_FLUSH_CMD MSR needs only to be written on VMENTER. Extend
> add_atomic_switch_msr() with an entry_only parameter to allow storing the
> MSR only in the guest (ENTRY) MST array.
> 
> Hmm?

<nods>

Albeit do you want to wait a bit until I have the performance numbers at
hand on how much this helps vs doing it the old-fashioned way (WRMSRL right
before VMENTER)?


> 
> Thanks,
> 
> 	tglx

  reply	other threads:[~2018-06-27 14:33 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-23 13:54 [MODERATED] [PATCH v4 7/8] [PATCH v4 7/8] Linux Patch #7 konrad.wilk
2018-06-27 10:52 ` Thomas Gleixner
2018-06-27 14:32   ` Konrad Rzeszutek Wilk [this message]
2018-06-27 14:47     ` [MODERATED] " Andrew Cooper

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