[Xense-devel] Re: [Xen-devel] [PATCH] Intel(R) Trusted Execution

To:	"Cihula, Joseph" <joseph.cihula@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>, <xense-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xense-devel] Re: [Xen-devel] [PATCH] Intel(R) Trusted Execution Technology support
From:	Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date:	Mon, 29 Oct 2007 17:52:00 +0000
Cc:	"Xu, James" <james.xu@xxxxxxxxx>, "Wang, Shane" <shane.wang@xxxxxxxxx>, "Wei, Gang" <gang.wei@xxxxxxxxx>
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On 29/10/07 17:41, "Cihula, Joseph" <joseph.cihula@xxxxxxxxx> wrote:

>> Why is the memory region not marked as E820_UNUSABLE by tboot? And/or
> extend
>> the multiboot info structure and transmit the address of the shared
> page
>> that way.
> 
> I didn't mark it as UNUSABLE because dom0 doesn't like low memory that
> it can't probe and I didn't realize that there would be a problem with
> marking it RESERVED.  However, I can mark it as UNUSABLE and then when I
> find it, change it to RESERVED.  I'll send a patch for this as well.

By low memory, do you mean the signature is in the bottom megabyte of
memory? If that's guaranteed then can we just scan the whole lot
0x00000-0xfffff (excluding VGA hole)?

 -- Keir



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