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Re: [Qemu-devel] [PATCH v2 0/7] KVM: Hyper-V SynIC timers migration fixe


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH v2 0/7] KVM: Hyper-V SynIC timers migration fixes
Date: Thu, 7 Jan 2016 17:42:17 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0


On 28/12/2015 16:27, Andrey Smetanin wrote:
> During testing of Windows 2012R2 guest migration with
> Hyper-V SynIC timers enabled we found several bugs
> which lead to restoring guest in a hung state.
> 
> This patch series provides several fixes to make the
> migration of guest with Hyper-V SynIC timers enabled
> succeed.
> 
> The series applies on top of
> 'kvm/x86: Remove Hyper-V SynIC timer stopping'
> previously sent.
> 
> Changes v2:
> * fix incorrect logical operation for one-shot timers
> * drop stimer->count == 0 inside stimer_start()
> * comment stimer_start() assumtions
> 
> Signed-off-by: Andrey Smetanin <address@hidden>
> Reviewed-by: Roman Kagan <address@hidden>
> CC: Gleb Natapov <address@hidden>
> CC: Paolo Bonzini <address@hidden>
> CC: Roman Kagan <address@hidden>
> CC: Denis V. Lunev <address@hidden>
> CC: address@hidden
> 
> Andrey Smetanin (7):
>   kvm/x86: Hyper-V timers fix incorrect logical operation
>   kvm/x86: Drop stimer_stop() function
>   kvm/x86: Hyper-V unify stimer_start() and stimer_restart()
>   kvm/x86: Reorg stimer_expiration() to better control timer restart
>   kvm/x86: Hyper-V fix SynIC timer disabling condition
>   kvm/x86: Skip SynIC vector check for QEMU side
>   kvm/x86: Update SynIC timers on guest entry only
> 
>  arch/x86/kvm/hyperv.c | 119 
> ++++++++++++++++++++++++--------------------------
>  arch/x86/kvm/x86.c    |   6 +++
>  2 files changed, 63 insertions(+), 62 deletions(-)
> 


Applied this instead of v1. :)

Paolo



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