linux-kernel - Re: [PATCH 0/2 v2] x86: kvm: global clock updates

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Message-ID: <20140228145234.GA13771@amt.cnet>
Date:	Fri, 28 Feb 2014 11:52:34 -0300
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Andrew Jones <drjones@...hat.com>
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	pbonzini@...hat.com
Subject: Re: [PATCH 0/2 v2] x86: kvm: global clock updates

On Fri, Feb 28, 2014 at 12:52:53PM +0100, Andrew Jones wrote:
> This patch series addresses two issues with global clock updates.
> The first fixes a bug found on hosts that have a tsc marked as
> unstable. As global clock updates get triggered on every vcpu load
> in these cases, guests with a large number of vcpus have their
> progress nearly halted. The fix for that bug should also go to
> stable. The second patch in this series ensures that NTP corrections
> on the host, as well as on guests with all vcpus pinned, will be
> propagated periodically. That patch improves things, but doesn't
> fix a bug, thus it can be merged at a later time than the first.
> I've posted them together as a series, as the second one builds
> on the first.
> 
> Andrew Jones (2):
>   x86: kvm: rate-limit global clock updates
>   x86: kvm: introduce periodic global clock updates
> 
>  arch/x86/include/asm/kvm_host.h |  2 +
>  arch/x86/kvm/x86.c              | 92 +++++++++++++++++++++++++++++++++++++++--
>  2 files changed, 90 insertions(+), 4 deletions(-)
> 
> -- 
> 1.8.1.4

Looks good. 

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