From: Paolo Bonzini <pbonzini@redhat.com>
To: Gerhard Wiesinger <lists@wiesinger.com>, kvm@vger.kernel.org
Subject: Re: [PATCH] Fixed KVM problems with old DOS programs. Compatibility can be forced by module parameter.
Date: Thu, 5 Nov 2015 17:15:25 +0100 [thread overview]
Message-ID: <563B809D.5040306@redhat.com> (raw)
In-Reply-To: <563B7ECB.9030504@wiesinger.com>
On 05/11/2015 17:07, Gerhard Wiesinger wrote:
>>
>
> ./trace-cmd record -b 20000 -e kvm
> ./trace-cmd report | grep -i task_switch
> qemu-system-x86-6024 [001] 792774.719297: kvm_exit: reason task_switch
> rip 0x4883 info 158 4000000000
0x158 is the segment selector of the incoming TSS, and the task switch
was caused by a far jump.
> But I can't interpret it.
Neither can I; you have to send the whole trace.
> But I know my patch works well. Since it is
> just a module parameter it is fully backward compatible by default and
> because of the one liner no side effects are possible. So a intergration
> would be good.
It's also papering over a bug, and likely the bug still triggers on
Intel systems. So it's not acceptable.
Can you provide reproduction instructions please?
Paolo
next prev parent reply other threads:[~2015-11-05 16:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-04 19:33 [PATCH] Fixed KVM problems with old DOS programs. Compatibility can be forced by module parameter Gerhard Wiesinger
2015-11-04 21:27 ` Paolo Bonzini
2015-11-04 21:33 ` Gerhard Wiesinger
2015-11-04 22:04 ` Paolo Bonzini
2015-11-05 16:07 ` Gerhard Wiesinger
2015-11-05 16:15 ` Paolo Bonzini [this message]
2015-11-05 16:19 ` Paolo Bonzini
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