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

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Message-ID: <5315BA55.4070202@redhat.com>
Date:	Tue, 04 Mar 2014 12:34:45 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>,
	Andrew Jones <drjones@...hat.com>
CC:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2 v2] x86: kvm: global clock updates

Il 28/02/2014 15:52, Marcelo Tosatti ha scritto:
> 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.
>

Applied to kvm/queue, thanks to both.

Paolo
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