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Re: [Qemu-devel] Qemu / KQemu on 64-bit (x86_64) host systems


From: andrzej zaborowski
Subject: Re: [Qemu-devel] Qemu / KQemu on 64-bit (x86_64) host systems
Date: Wed, 18 Apr 2007 22:05:21 +0200

Hi,

On 18/04/07, Werner Dittmann <address@hidden> wrote:
Andrzej,

just another remark: after setting the kernel parameter to "notsc"
the kernel now detects the CPU correctly. Without this setting the
CPU detetion was wrong (displays the wrong CPU type, frequency, etc).
Are there any know side-effects if notsc (no time stamp counter) is
set?

I don't know what clocksource is chosen with "notsc", it may be
forgettably slower one (but not necessarily). What do you mean by
wrong CPU?

Apparently this is the same SMP issue I described in
http://lists.gnu.org/archive/html/qemu-devel/2007-03/msg00652.html so
it's not x86_64 related. If you apply the patch from that post, you
can skip "notsc".

Regards,
Andrzej




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