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Date: Tue, 26 Oct 2010 15:38:46 +0900
From: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
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To: "Michael S. Tsirkin" <mst@redhat.com>
CC: Jan Kiszka <jan.kiszka@siemens.com>, Avi Kivity <avi@redhat.com>,
        Marcelo Tosatti <mtosatti@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, "x86@kernel.org" <x86@kernel.org>,
        Gleb Natapov <gleb@redhat.com>, Sheng Yang <sheng@linux.intel.com>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH RFC] kvm: write protect memory after slot swap
References: <20101025012124.GA31262@redhat.com> <4CC548C1.3060009@siemens.com> <20101025120545.GA17337@redhat.com>
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(2010/10/25 21:05), Michael S. Tsirkin wrote:
> On Mon, Oct 25, 2010 at 11:07:13AM +0200, Jan Kiszka wrote:
>> Cool, seems to be the key to the corruptions I've seen. Applying your
>> patch make them disappear.
>
> Yes, works for me as well.
>

I did some tests on my laptop:
   - kvm.git + mst's patch
   - qemu.git (upstream qemu)
and still got graphics curruption.


Corruption:
   On usual Desktop environment, I opened two terminals on different
   workspaces. Then as Jan did, I did "find /" loop on both of them.

   During these heavy updates, I tried to switch between these
   workspaces some times. Then, at some turn, some part of old
   workspace's images like terminals and mouse cursor remained
   in the new workspace.

   I could refresh these by moving mouse over the problematic parts.
   But without doing so, the images remained still.


Refresh is not working on virtual machines as I expect?


Thanks,
   Takuya