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RE: [Xen-devel] X86_64 "assert" when booting 64-bit image.

To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>
Subject: RE: [Xen-devel] X86_64 "assert" when booting 64-bit image.
From: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
Date: Thu, 9 Feb 2006 10:07:35 -0800
Cc: "Petersson, Mats" <Mats.Petersson@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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Thread-topic: [Xen-devel] X86_64 "assert" when booting 64-bit image.
Keir Fraser wrote:
> On 9 Feb 2006, at 17:44, Nakajima, Jun wrote:
>> I think that particular check is valid; it's basically saying "we
>> shadow page tables only". I feel mfn_is_page_table can be wrong with
>> the type PGT_fl1_shadow, which is bigger than PGT_l4_shadow.  Let me
>> check and come back. I slightly remember I needed to kill the check
>> when I was debugging the code, but not sure if it was triggered by a
>> bug. 
> Yeah, you killed the check by calling ___shadow_status() directly in
> one place, but there's also a path via sync_all which still was bad.
> I just killed the whole function and renamed ___shadow_status() to
> take its place.
>   -- Keir

Sounds sensible. That check was overkill for the non-debug Xen. I
checked if we can remove the whole section, and it worked fine (i.e.
64-bit hvm guest on the 64-bit Xen).

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