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Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios
From: |
Kevin O'Connor |
Subject: |
Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios |
Date: |
Sun, 22 Nov 2009 10:38:42 -0500 |
User-agent: |
Mutt/1.5.19 (2009-01-05) |
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.
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
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, (continued)
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/29
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Natalia Portillo, 2009/11/29
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/30
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Jamie Lokier, 2009/11/30
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Natalia Portillo, 2009/11/30
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Kevin O'Connor, 2009/11/30
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/30
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/25
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/24
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/25
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios,
Kevin O'Connor <=
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/23
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/23
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/23
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/23
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/23