WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

RE: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)

To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)
From: "Guy Zana" <guy@xxxxxxxxxxxx>
Date: Tue, 13 Nov 2007 11:30:42 -0500
Delivery-date: Tue, 13 Nov 2007 08:32:23 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <C35F80D7.18554%Keir.Fraser@xxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcgmCEj4SVwEbkIUR9iro4itpNXRaQAAtDe4AACw6CAAAQobSAAAJl+A
Thread-topic: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)
Sorry, the tables are mapped separately.
You are right :)


From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx]
Sent: Tuesday, November 13, 2007 6:27 PM
To: Guy Zana; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)

Nope, a straw poll of three boxes shows one of my boxes with tables in the range 0xe0000-0xf0000, and one with the tables in high memory just below 4GB! It?s only the header that has to be in the range 0xf0000-0xfffff.

 -- Keir

On 13/11/07 16:11, "Guy Zana" <guy@xxxxxxxxxxxx> wrote:

Yes, I see it, robios copies just the entry point (but not the structures).
I think the tables should be copied to >0xf0000 as well.

I encountered an implementation which maps 0xf0000 (and nothing below that...)



 

From: Keir Fraser  [mailto:Keir.Fraser@xxxxxxxxxxxx]
Sent: Tuesday, November 13, 2007  5:38 PM
To: Guy Zana;  xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] SMBIOS starts  at 0xe9000 (out of range)

 
I?ll have to double check, but I think that rombios  picks up the smbios tables from 0xe9000 and copies them into the valid range.  We do it that way because only rombios knows the memory layout  0xf0000-0xfffff.

 -- Keir

On 13/11/07 15:23, "Guy Zana"  <guy@xxxxxxxxxxxx> wrote:

 
#define  SMBIOS_PHYSICAL_ADDRESS        0x000E9000

By the spec it  should be somewhere between 0xF0000 to 1MB,
There is even a comment in  the code:

/* SMBIOS entry point -- must be written to a 16-bit aligned  address
   between 0xf0000 and 0xfffff.  
 */
struct smbios_entry_point {
...

Any reason for  that?

Thanks,
Guy.


 

_______________________________________________
Xen-devel  mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
<Prev in Thread] Current Thread [Next in Thread>