From: Gerd Hoffmann <kraxel@suse.de>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Virtualization Mailing List <virtualization@lists.osdl.org>
Subject: Re: vgacon disable again
Date: Wed, 14 Feb 2007 09:07:42 +0100 [thread overview]
Message-ID: <45D2C34E.60806@suse.de> (raw)
In-Reply-To: <45D233A9.7030802@goop.org>
Jeremy Fitzhardinge wrote:
> Gerd Hoffmann wrote:
>> Oh, and it obsoletes vgacon-fix-zero-size.patch btw ...
>>
>
> Well, I think the zero-size allocation oops is a bug anyway. But is it
> really necessary to disable VGA beyond that?
Yes, it is. Otherwise it oopses as soon as something is printed on
/dev/tty<any>. Quite early at boot with "console=tty1", otherwise as
soon as /sbin/getty starts on /dev/tty1. Oh, and the reason is it
thinks it has an EGA card with 0 lines and 0 columns because we never
ran the real-mode boot code and thus SCREEN_INFO isn't initialized. The
0x0 screen probably leads to the zero-sized buffer you are catching in
that patch.
cheers,
Gerd
--
Gerd Hoffmann <kraxel@suse.de>
next prev parent reply other threads:[~2007-02-14 8:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-13 10:54 vgacon disable again Gerd Hoffmann
2007-02-13 11:18 ` Gerd Hoffmann
2007-02-13 21:54 ` Jeremy Fitzhardinge
2007-02-14 8:07 ` Gerd Hoffmann [this message]
2007-02-14 10:52 ` Jeremy Fitzhardinge
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