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From: "Kaushik Barde" <Kaushik_Barde@Phoenix.com>
To: Xen devel list <xen-devel@lists.xensource.com>
Subject: EPS Signature
Date: Sun, 4 Feb 2007 18:29:41 -0800	[thread overview]
Message-ID: <D4E70D3B2069CB4AA41CD5D4A7DEED00324869@scl-exch2k3.phoenix.com> (raw)
In-Reply-To: C1E93B88.8CCC%Keir.Fraser@cl.cam.ac.uk


Hi,

We want to access the EBDA Entry Point Signature at 40:0E for our DOM-0 through a driver,
We noticed that driver is trying to read from a pseudo physical location and not the physical machine RAM location. Hence it's not getting the proper value. But if we have to read from the machine RAM location we can use ( virt_to_bus or bus_to_virt) per dev_list comments. 

But this area is under the control of hypervisor. I do not know if we can ioremap these pages ( those which belong to hypervisor). 

I am trying to see if we can be able to get to the 40:0E address. And get the correct EPS signature

-Kaushik

  reply	other threads:[~2007-02-05  2:29 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-01 13:53 xensource (pci) device id's? Gerd Hoffmann
2007-02-01 13:58 ` Ian Campbell
2007-02-01 14:30   ` Gerd Hoffmann
2007-02-01 15:45     ` Gerd Hoffmann
2007-02-02  9:26       ` Ian Campbell
2007-02-02  9:47         ` Gerd Hoffmann
2007-02-02 18:25       ` Keir Fraser
2007-02-05  8:48         ` Gerd Hoffmann
2007-02-05 14:20         ` Gerd Hoffmann
2007-02-02 19:03       ` Keir Fraser
2007-02-05  2:29         ` Kaushik Barde [this message]
2007-02-05  2:52           ` EPS Signature Ian Pratt
2007-02-10  7:52             ` GDT access from DOM-0 driver Kaushik Barde
2007-02-11  1:33             ` EPS Signature Kaushik Barde
2007-02-11 10:09               ` Keir Fraser
2007-02-11 23:39                 ` Kaushik Barde
2007-02-12  0:58                   ` Keir Fraser
2007-02-12  2:36                     ` Kaushik Barde
2007-02-12  7:43                       ` Keir Fraser
2007-02-06 15:43           ` Andrew D. Ball
2007-02-05  8:55         ` xensource (pci) device id's? Gerd Hoffmann
2007-02-01 20:02     ` Zulauf, John
2007-02-01 20:29       ` Ian Campbell
2007-02-01 23:22         ` Keir Fraser
2007-02-02  8:15         ` Gerd Hoffmann
2007-02-01 23:17       ` Keir Fraser

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