From: Gleb Natapov <gleb@qumranet.com>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH v2 6/6] Pass cpu speed into SM BIOS.
Date: Tue, 26 Aug 2008 09:34:16 +0300 [thread overview]
Message-ID: <20080826063416.GT6192@minantech.com> (raw)
In-Reply-To: <023801c906e7$100ab900$0201a8c0@zeug>
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.
prev parent reply other threads:[~2008-08-26 6:34 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-25 9:58 [Qemu-devel] [PATCH v2 0/6] Add UUID command-line option Gleb Natapov
2008-08-25 9:58 ` [Qemu-devel] [PATCH v2 1/6] Use IO port for qemu<->guest BIOS communication Gleb Natapov
2008-08-25 14:24 ` Anthony Liguori
2008-08-25 14:40 ` Gleb Natapov
2008-08-25 15:01 ` Blue Swirl
2008-08-25 18:01 ` Anthony Liguori
2008-08-25 18:27 ` Blue Swirl
2008-08-26 8:24 ` Gleb Natapov
2008-08-26 16:46 ` Blue Swirl
2008-08-26 19:30 ` Avi Kivity
2008-08-26 19:43 ` Blue Swirl
2008-08-27 8:18 ` Avi Kivity
2008-08-27 11:05 ` Gleb Natapov
2008-08-27 17:10 ` Blue Swirl
2008-08-28 5:29 ` Gleb Natapov
2008-09-07 2:33 ` Anthony Liguori
2008-09-07 9:32 ` Blue Swirl
2008-09-08 5:39 ` Gleb Natapov
2008-08-25 14:25 ` Anthony Liguori
2008-08-25 14:46 ` Gleb Natapov
2008-08-25 15:37 ` Jamie Lokier
2008-08-25 18:53 ` [Qemu-devel] Re: [PATCH v2 1/6] Use IO port for qemu<->guest BIOScommunication Sebastian Herbszt
2008-08-26 8:17 ` Gleb Natapov
2008-08-25 9:58 ` [Qemu-devel] [PATCH v2 2/6] Add -uuid command line option Gleb Natapov
2008-08-25 9:58 ` [Qemu-devel] [PATCH v2 3/6] Add "info uuid" command to monitor Gleb Natapov
2008-08-25 9:58 ` [Qemu-devel] [PATCH v2 4/6] Use libuuid if available Gleb Natapov
2008-08-25 11:08 ` Andreas Färber
2008-08-25 11:26 ` Gleb Natapov
2008-08-25 11:35 ` Jamie Lokier
2008-08-25 11:45 ` Andreas Färber
2008-08-25 14:03 ` Gleb Natapov
2008-08-25 18:57 ` [Qemu-devel] " Sebastian Herbszt
2008-08-25 9:58 ` [Qemu-devel] [PATCH v2 5/6] Add UUID to BIOS configuration info Gleb Natapov
2008-08-25 9:58 ` [Qemu-devel] [PATCH v2 6/6] Pass cpu speed into SM BIOS Gleb Natapov
2008-08-25 14:17 ` Anthony Liguori
2008-08-25 14:26 ` Gleb Natapov
2008-08-25 19:26 ` [Qemu-devel] " Sebastian Herbszt
2008-08-26 6:23 ` Gleb Natapov
2008-08-27 23:42 ` [Qemu-devel] " Sebastian Herbszt
2008-08-28 5:28 ` Gleb Natapov
2008-08-25 19:15 ` [Qemu-devel] " Sebastian Herbszt
2008-08-26 6:34 ` Gleb Natapov [this message]
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