From: Gleb Natapov <gleb@redhat.com>
To: Kevin O'Connor <kevin@koconnor.net>
Cc: qemu-devel@nongnu.org, Sebastian Herbszt <herbszt@gmx.de>
Subject: Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios
Date: Mon, 23 Nov 2009 13:16:01 +0200 [thread overview]
Message-ID: <20091123111601.GH2999@redhat.com> (raw)
In-Reply-To: <20091122153842.GA13491@morn.localdomain>
On Sun, Nov 22, 2009 at 10:38:42AM -0500, Kevin O'Connor wrote:
> On Sun, Nov 22, 2009 at 05:10:53PM +0200, Gleb Natapov wrote:
> > On Sun, Nov 22, 2009 at 04:07:56PM +0100, Sebastian Herbszt wrote:
> > > Gleb Natapov wrote:
> > > >May be make qemu to map it writable if isapc is specified.
> > >
> > > I don't think keeping the segment writable after POST is a good idea.
> > >
> > Isn't it writable now after POST with pcipc? Why this is not a good
> > idea?
>
> SeaBIOS and bochs bios will make the f-segment readonly at the end of
> post. See make_bios_readonly() in src/shadow.c.
>
I see SeaBIOS does this, but I don't see where bochs bios does this.
> SeaBIOS' ram locking requires the same pci access that the unlocking
> needs, so if qemu made the f-segment writable on isa then it would
> remain writable past POST.
>
> -Kevin
--
Gleb.
next prev parent reply other threads:[~2009-11-23 11:16 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-19 21:30 [Qemu-devel] POST failure (loop) with isapc and seabios Sebastian Herbszt
2009-11-20 22:51 ` [Qemu-devel] " Kevin O'Connor
2009-11-21 14:37 ` Sebastian Herbszt
2009-11-22 12:35 ` Gleb Natapov
2009-11-22 15:07 ` Sebastian Herbszt
2009-11-22 15:10 ` Gleb Natapov
2009-11-22 15:31 ` Sebastian Herbszt
2009-11-22 15:38 ` Gleb Natapov
2009-11-22 17:40 ` Kevin O'Connor
2009-11-22 21:15 ` Sebastian Herbszt
2009-11-22 22:04 ` Sebastian Herbszt
2009-11-23 11:14 ` Gleb Natapov
2009-11-23 11:17 ` Gleb Natapov
2009-11-22 20:01 ` Sebastian Herbszt
2009-11-23 11:11 ` Gleb Natapov
2009-11-23 19:19 ` Sebastian Herbszt
2009-11-23 19:43 ` Gleb Natapov
2009-11-23 21:30 ` Sebastian Herbszt
2009-11-24 6:28 ` Gleb Natapov
2009-11-24 14:38 ` Jamie Lokier
2009-11-24 14:40 ` Gleb Natapov
2009-11-25 6:09 ` Jamie Lokier
2009-11-25 12:20 ` Gleb Natapov
2009-11-25 15:31 ` Kevin O'Connor
2009-11-25 16:42 ` Gleb Natapov
2009-11-25 22:11 ` Sebastian Herbszt
2009-11-27 3:00 ` Jamie Lokier
2009-11-27 19:13 ` Sebastian Herbszt
2009-11-25 22:04 ` Sebastian Herbszt
2009-11-25 22:53 ` Kevin O'Connor
2009-11-26 6:49 ` Gleb Natapov
2009-11-26 7:15 ` Kevin O'Connor
2009-11-26 7:20 ` Gleb Natapov
2009-11-26 7:48 ` Kevin O'Connor
2009-11-26 7:56 ` Gleb Natapov
2009-11-26 8:12 ` Kevin O'Connor
2009-11-26 8:19 ` Gleb Natapov
2009-11-26 16:03 ` Kevin O'Connor
2009-11-26 22:35 ` Sebastian Herbszt
2009-11-27 5:39 ` Kevin O'Connor
2009-11-26 6:45 ` Gleb Natapov
2009-11-26 20:55 ` Sebastian Herbszt
2009-11-27 7:44 ` Gleb Natapov
2009-11-27 20:42 ` Sebastian Herbszt
2009-11-29 8:20 ` Gleb Natapov
2009-11-29 22:53 ` Natalia Portillo
2009-11-30 7:12 ` Gleb Natapov
2009-11-30 20:53 ` Jamie Lokier
2009-11-30 21:02 ` Natalia Portillo
2009-12-01 2:16 ` Kevin O'Connor
2009-11-30 20:34 ` Sebastian Herbszt
2009-12-01 9:37 ` Gleb Natapov
2009-11-25 21:08 ` Sebastian Herbszt
2009-11-24 23:27 ` Sebastian Herbszt
2009-11-25 10:48 ` Gleb Natapov
2009-11-22 15:38 ` Kevin O'Connor
2009-11-23 11:16 ` Gleb Natapov [this message]
2009-11-23 17:57 ` Sebastian Herbszt
2009-11-23 18:07 ` Gleb Natapov
2009-11-23 19:12 ` Sebastian Herbszt
2009-11-23 19:18 ` Gleb Natapov
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