linux-kernel - Re: [PATCH v2 0/5] KVM: x86: improve reexecute

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Message-ID: <20121215010546.GC27536@amt.cnet>
Date:	Fri, 14 Dec 2012 23:05:46 -0200
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
Cc:	Gleb Natapov <gleb@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH v2 0/5] KVM: x86: improve reexecute_instruction

On Fri, Dec 14, 2012 at 12:50:09PM +0800, Xiao Guangrong wrote:
> >>> program a timer interrupt and #GP? 
> >>
> >> Could you please explain the detail?
> > 
> > Before the instruction which writes continuously to the pagetable, arm
> > say lapic timer. #GP on the interrupt handler and test with failure.
> 
> Sorry, I am confused about this. After Qemu exits due to KVM_EXIT_INTERNAL_ERROR,
> the vm is stopped then interrupt can not be injected to guest. Or i missed something?

Yes, but without fixed kernel kvm-unit test executable loops continuously.
Perhaps its more appropriate to fix generically, nevermind.

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