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From: Igor Mammedov <imammedo@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com,
	hpa@zytor.com, x86@kernel.org, johnstul@us.ibm.com,
	riel@redhat.com, avi@redhat.com
Subject: Re: x86: kvmclock: abstract save/restore sched_clock_state
Date: Wed, 08 Feb 2012 11:53:59 +0100	[thread overview]
Message-ID: <4F325447.4010006@redhat.com> (raw)
In-Reply-To: <20120207210542.GC20618@amt.cnet>

On 02/07/2012 10:05 PM, Marcelo Tosatti wrote:
>
> Upon resume from hibernation, CPU 0's hvclock area contains the old
> values for system_time and tsc_timestamp. It is necessary for the
> hypervisor to update these values with uptodate ones before the CPU uses
> them.
>
> Abstract TSC's save/restore sched_clock_state functions and use
> restore_state to write to KVM_SYSTEM_TIME MSR, forcing an update.
>
> Fixes suspend-to-disk with kvmclock.
>
> Signed-off-by: Marcelo Tosatti<mtosatti@redhat.com>
>

Acked-by: Igor Mammedov <imammedo@redhat.com>

  reply	other threads:[~2012-02-08 10:54 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-07 21:05 x86: kvmclock: abstract save/restore sched_clock_state Marcelo Tosatti
2012-02-08 10:53 ` Igor Mammedov [this message]
2012-02-09 12:27 ` Amit Shah
2012-02-09 15:13   ` Igor Mammedov
2012-02-10 10:02     ` Amit Shah
2012-02-10 10:11       ` Igor Mammedov
2012-02-10 10:23         ` Amit Shah
2012-02-10 12:32       ` Marcelo Tosatti
2012-02-10 12:33         ` Marcelo Tosatti
2012-02-10 12:43           ` Igor Mammedov
2012-02-13 12:46             ` Amit Shah
2012-02-13 12:56           ` Amit Shah
2012-02-10 13:18         ` Amit Shah
2012-02-10 20:58           ` Igor Mammedov
2012-02-13 12:39             ` Amit Shah
2012-02-13 13:07 ` x86: kvmclock: abstract save/restore sched_clock_state (v2) Marcelo Tosatti
2012-02-13 15:20   ` Igor Mammedov
2012-02-13 15:52     ` Marcelo Tosatti
2012-02-15 10:28       ` Avi Kivity
2012-02-13 15:45   ` [PATCH RFC] pvclock: Make pv_clock more robust and fixup it if overflow happens Igor Mammedov
2012-02-13 17:48     ` Marcelo Tosatti
2012-02-13 18:15       ` Igor Mammedov
2012-02-13 16:26   ` x86: kvmclock: abstract save/restore sched_clock_state (v2) Amit Shah
2012-03-01  9:58 ` x86: kvmclock: abstract save/restore sched_clock_state Thomas Gleixner

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