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Re: [Qemu-devel] Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS.
From: |
Gleb Natapov |
Subject: |
Re: [Qemu-devel] Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS. |
Date: |
Tue, 26 Aug 2008 09:34:16 +0300 |
On Mon, Aug 25, 2008 at 09:15:51PM +0200, Sebastian Herbszt wrote:
> Gleb Natapov wrote:
>
> <snip>
>> +#define CPUFREQ_PREFIX "/sys/devices/system/cpu"
> <snip>>
>> + f = fopen("/proc/cpuinfo", "r");
> <snip>
>
> How stable are the values provided by those files?
> AFAIK the data from /proc/cpuinfo does change if cpufreq is used.
Looking at the code it is indeed how it works.
> Could this somehow "hurt" the VM, e.g. by SMBIOS table value
> possibly changing on consecutive qemu starts?
>
Don't know, but on one of my PCs SMBIOS value for CPU speed is greater
then /proc/cpuinfo value.
--
Gleb.
- Re: [Qemu-devel] [PATCH v2 4/6] Use libuuid if available., (continued)
- [Qemu-devel] [PATCH v2 6/6] Pass cpu speed into SM BIOS., Gleb Natapov, 2008/08/25
- Re: [Qemu-devel] [PATCH v2 6/6] Pass cpu speed into SM BIOS., Anthony Liguori, 2008/08/25
- Re: [Qemu-devel] [PATCH v2 6/6] Pass cpu speed into SM BIOS., Gleb Natapov, 2008/08/25
- [Qemu-devel] Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS., Sebastian Herbszt, 2008/08/25
- Re: [Qemu-devel] Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS., Gleb Natapov, 2008/08/26
- [Qemu-devel] Re: Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS., Sebastian Herbszt, 2008/08/27
- Re: [Qemu-devel] Re: Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS., Gleb Natapov, 2008/08/28
[Qemu-devel] Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS., Sebastian Herbszt, 2008/08/25
- Re: [Qemu-devel] Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS.,
Gleb Natapov <=