From: Gleb Natapov <gleb@redhat.com>
To: "Benoît Canet" <benoit.canet@irqsave.net>
Cc: pbonzini@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] KVM guest cpu L3 cache and cpufreq
Date: Mon, 26 Aug 2013 15:40:31 +0300 [thread overview]
Message-ID: <20130826124031.GB22977@redhat.com> (raw)
In-Reply-To: <20130813181713.GA5204@irqsave.net>
On Tue, Aug 13, 2013 at 08:17:13PM +0200, Benoît Canet wrote:
>
> Hi,
>
> I noticed that the l3 cache size of a guest /proc/cpuinfo is not the same as
> the l3 cache size of the host.
>
> I did not found any references to this in the qemu and KVM code.
>
> Is the size of the guest L3 cache fixed in hardware ?
>
No, it is hardcoded somewhere in qemu cpuid code.
> Can a patch be written to set it ?
>
Yes.
> Similarly I noticed that the frequency in the guest was not reflecting the
> frequency scaling of the host.
>
Not sure what you mean here. Frequency as seen where?
> Could anything be done for this ?
>
> Best regards
>
> Benoît
--
Gleb.
next prev parent reply other threads:[~2013-08-26 12:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-13 18:17 [Qemu-devel] KVM guest cpu L3 cache and cpufreq Benoît Canet
2013-08-26 12:40 ` Gleb Natapov [this message]
2013-08-26 12:49 ` Benoît Canet
2013-08-26 14:33 ` Gleb Natapov
2013-08-26 16:45 ` Benoît Canet
2013-08-26 20:47 ` Eduardo Habkost
2013-08-27 13:18 ` Benoît Canet
2013-08-27 13:17 ` Gleb Natapov
2013-08-27 13:20 ` Gleb Natapov
2013-08-27 13:35 ` Benoît Canet
2013-08-27 13:39 ` Gleb Natapov
2013-08-27 13:37 ` Eduardo Habkost
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