RE: [Xen-devel] memory calculation mismatch between e820 and guest RAM size

["Li, Xin B" <xin.b.li@xxxxxxxxx>]

Oops, we don't allocate memory for vga hole in the page array, my fault.

-Xin 

>-----Original Message-----
>From: Keir Fraser [mailto:keir@xxxxxxxxxxxxx] 
>Sent: Monday, August 06, 2007 11:35 PM
>To: Li, Xin B
>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-devel] memory calculation mismatch between 
>e820 and guest RAM size
>
>I don't understand what the problem is that you think needs 
>fixing. All the
>memory allocated in xc_hvm_build.c:setup_guest() is marked as 
>E820_RAM in
>the e820 map (except for EBDA and BIOSROM regions).
>
> -- Keir
>
>On 6/8/07 16:28, "Li, Xin B" <xin.b.li@xxxxxxxxx> wrote:
>
>> In E820, tom of memory is guest memory size we give in the 
>config file,
>> but guest RAM we allocate is a little bigger than what E820 sets,
>> because we don't allocate memory for VGA hole from 0xA0000 
>to 0xBFFFF.
>> 2 ways to fix it:
>> 1) align to current E820 setting, so need to change memory allocation
>> code in tools.
>> 2) align to guest memory allocation, so need to change e820 setting.
>> Which one do you prefer?
>> -Xin
>> 
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel
>

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