From: "H. Peter Anvin" <hpa@zytor.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Virtualization Mailing List <virtualization@lists.osdl.org>
Subject: Re: Vmware crashes if compress/misc.c scrolls?
Date: Wed, 20 Jun 2007 17:46:09 -0700 [thread overview]
Message-ID: <4679CA51.3080600@zytor.com> (raw)
In-Reply-To: <4679C5DE.7090700@goop.org>
Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> Jeremy Fitzhardinge wrote:
>>
>>> You mean "is a real failure"? Or "is triggered by particular
>>> instructions"? It seems profoundly bogus (as in, surely DOS or
>>> something reads the framebuffer).
>>>
>>>
>>
>> A real failure (although only triggered from some variant of protected
>> mode -- paging off?)
>>
>
> Oh, it only happens in protected mode? So the answer to "how does the
> shadow framebuffer get populated?" is "real mode does it before
> switching to protected mode".
>
Sure, but that means frobbing the boot parameter structure, with
associated problems. I guess I'm not inherently opposed to it, but I'd
like to understand if there is a cleaner workaround first.
-hpa
next prev parent reply other threads:[~2007-06-21 0:46 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-20 23:44 Vmware crashes if compress/misc.c scrolls? H. Peter Anvin
2007-06-21 0:07 ` Jeremy Fitzhardinge
2007-06-21 0:17 ` H. Peter Anvin
2007-06-21 0:21 ` Jeremy Fitzhardinge
2007-06-21 0:25 ` H. Peter Anvin
2007-06-21 0:27 ` Jeremy Fitzhardinge
2007-06-21 0:46 ` H. Peter Anvin [this message]
2007-06-21 21:54 ` Zachary Amsden
2007-06-22 2:22 ` H. Peter Anvin
2007-06-22 2:34 ` Zachary Amsden
2007-06-22 3:09 ` Jeremy Fitzhardinge
2007-08-04 4:48 ` Zachary Amsden
2007-08-04 9:24 ` Andi Kleen
2007-08-04 12:08 ` Zachary Amsden
2007-08-04 14:19 ` Zachary Amsden
2007-08-04 20:14 ` [syslinux] " H. Peter Anvin
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