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Message-Id: <200710151319.28410.borntraeger@de.ibm.com>
Date: Mon, 15 Oct 2007 13:19:28 +0200
From: Christian Borntraeger <borntraeger@...ibm.com>
To: Laurent Vivier <Laurent.Vivier@...l.net>
Cc: Avi Kivity <avi@...ranet.com>, Ingo Molnar <mingo@...e.hu>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND 2][PATCH 4/4] Modify KVM to update guest time accounting.
forgot to CC everybody besides Laurent:
Am Montag, 15. Oktober 2007 schrieben Sie:
> No, It must not be cleared here because we can't enter in the accounting code
> between kvm_guest_enter(void) and kvm_guest_exit(void).
>
> This is why the accounting code clears it.
>
> I put a kvm_guest_exit() only for symmetry.
Why cant we enter the accounting code?
Dont know about x86, but on s390 we can get host interrupts and reschedules
even when we run a guest (if preemption is on).
If the timer tick happens while the guest is running, we will run the
accounting code on x86 as well, no?
Christian
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