From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <471F485B.60603@free.fr>
Date: Wed, 24 Oct 2007 15:27:55 +0200
From: Philippe Anel <xigh@free.fr>
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To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Broadcom drivers, yet again
References: <026f57cc887151966fbea9de9d31f6fa@quanstro.net>
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erik quanstrom a =E9crit :
>> term% grep cpu /dev/kmesg
>> cpu0: 998MHz CentaurHauls Via C3 Eden-N (cpuid: AX 0x069A DX 0x381BA3F=
)
>> cpu1: 997MHz CentaurHauls Via C3 Eden-N (cpuid: AX 0x069A DX 0x381BA3F=
)
>> term% grep type /dev/vgactl
>> type vesa
>>    =20
>
> do you know why vesa works with via multiprocessors?
> i haven't seen it work with amd/intel.  what's the difference?
>
> - erik
>
>  =20
For your information, it also works with my amd x2 processor.
I think it works because in (some?) dual core processors, the interrupts=20
are always routed to only
one of the two cores. This might not be the same for dual cpu machines.
And realmode requires interrupts to be completly disabled.

Phil;