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From: Scott Wood <scottwood@freescale.com>
To: Alexander Graf <agraf@suse.de>
Cc: qemu-ppc@nongnu.org, qemu-devel@nongnu.org,
	David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH] ppcr: Avoid decrementer related kvm exits
Date: Tue, 25 Oct 2011 14:38:34 -0500	[thread overview]
Message-ID: <4EA7103A.8080809@freescale.com> (raw)
In-Reply-To: <600B92AB-F318-4F7B-BF88-C142BB2676F3@suse.de>

On 10/14/2011 01:44 AM, Alexander Graf wrote:
> Wouldn't a simple
> 
> if (kvm_enabled()) {
>     return;
> }
> 
> in the beginning of the function make more sense? There's no code connecting the in-qemu and the in-kvm decrementors atm, so any logic applying to the in-qemu one is moot for kvm.

On book3e at least, we can use sregs to set the decrementer, and we
probably want this to happen on reset.

-Scott

  parent reply	other threads:[~2011-10-25 19:38 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-14  5:19 [Qemu-devel] [PATCH] ppcr: Avoid decrementer related kvm exits David Gibson
2011-10-14  5:30 ` Alexander Graf
2011-10-14  6:36   ` [Qemu-devel] [Qemu-ppc] " David Gibson
2011-10-14  6:44     ` Alexander Graf
2011-10-14  6:46       ` David Gibson
2011-10-17  5:25         ` David Gibson
2011-10-25 19:38       ` Scott Wood [this message]
2011-10-28  7:27         ` Alexander Graf

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