* rom bios
@ 2007-03-23 23:35 DONGYAOZU
[not found] ` <352399.53595.qm-K0cdyur6QfKA/QwVtaZbd3CJp6faPEW9@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: DONGYAOZU @ 2007-03-23 23:35 UTC (permalink / raw)
To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
When looking at the guest physical address space
layout, I am confused by the rombios location. Besides
normal bios position (0xE0000-1M), it seems the whole
region 2 is for that purpose too (4G-12K--4G), and
region 0 high end sapce also have a copy.
What is the reason to have multiple copy of rom bios?
Thanks, Dong
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: rom bios
[not found] ` <352399.53595.qm-K0cdyur6QfKA/QwVtaZbd3CJp6faPEW9@public.gmane.org>
@ 2007-03-25 8:56 ` Avi Kivity
0 siblings, 0 replies; 2+ messages in thread
From: Avi Kivity @ 2007-03-25 8:56 UTC (permalink / raw)
To: DONGYAOZU; +Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
DONGYAOZU wrote:
> When looking at the guest physical address space
> layout, I am confused by the rombios location. Besides
> normal bios position (0xE0000-1M), it seems the whole
> region 2 is for that purpose too (4G-12K--4G), and
> region 0 high end sapce also have a copy.
>
> What is the reason to have multiple copy of rom bios?
>
The x86 reset vector is 0xfffffff0 physical, so we need a copy there.
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error compiling committee.c: too many arguments to function
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2007-03-23 23:35 rom bios DONGYAOZU
[not found] ` <352399.53595.qm-K0cdyur6QfKA/QwVtaZbd3CJp6faPEW9@public.gmane.org>
2007-03-25 8:56 ` Avi Kivity
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