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From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, quintela@redhat.com
Subject: Re: [patch 1/3] KVM: x86: add ioctls to get/set PIO state
Date: Thu, 04 Feb 2010 21:16:47 +0200	[thread overview]
Message-ID: <4B6B1D1F.1080701@redhat.com> (raw)
In-Reply-To: <20100128190411.495771070@redhat.com>

On 01/28/2010 09:03 PM, Marcelo Tosatti wrote:
> A vcpu can be stopped after handling IO in userspace,
> but before returning to kernel to finish processing.
>
>    

Is this strictly needed?  If we teach qemu to migrate before executing 
the pio request, I think we'll be all right?  should work at least for 
IN/INS, not sure about OUT/OUTS.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.


  reply	other threads:[~2010-02-04 19:16 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-28 19:03 [patch 0/3] save/restore in-progress PIO Marcelo Tosatti
2010-01-28 19:03 ` [patch 1/3] KVM: x86: add ioctls to get/set PIO state Marcelo Tosatti
2010-02-04 19:16   ` Avi Kivity [this message]
2010-02-04 21:36     ` Marcelo Tosatti
2010-02-04 21:46       ` Avi Kivity
2010-02-04 22:12         ` Marcelo Tosatti
2010-02-04 22:45           ` Marcelo Tosatti
2010-02-08 22:41         ` Marcelo Tosatti
2010-02-09  6:38           ` Avi Kivity
2010-02-09 18:23             ` Marcelo Tosatti
2010-02-09 20:58             ` qemu-kvm: do not allow vcpu stop with in progress PIO Marcelo Tosatti
2010-02-10  7:02               ` Avi Kivity
2010-02-10 16:25                 ` Marcelo Tosatti
2010-02-10 16:40                   ` Avi Kivity
2010-02-10 16:52                     ` Alexander Graf
2010-02-10 17:01                       ` Avi Kivity
2010-02-10 17:03                         ` Alexander Graf
2010-02-10 17:08                           ` Avi Kivity
2010-02-10 17:07                         ` Gleb Natapov
2010-02-10 17:08                           ` Avi Kivity
2010-02-13 18:10                     ` KVM: add doc note about PIO/MMIO completion API Marcelo Tosatti
2010-02-14  8:17                       ` Avi Kivity
2010-02-17  9:22                         ` Avi Kivity
2010-02-18 13:24               ` qemu-kvm: do not allow vcpu stop with in progress PIO Avi Kivity
2010-01-28 19:03 ` [patch 2/3] uqmaster: save/restore pio state Marcelo Tosatti
2010-01-28 19:03 ` [patch 3/3] uqmaster: save/restore PIO page Marcelo Tosatti
2010-01-28 20:24   ` Anthony Liguori
2010-01-28 21:10     ` Marcelo Tosatti

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