Re: [Qemu-devel] Re: [PATCH 2/3] qemu: make cirrus init value pci spec compliant

[Gerd Hoffmann]

On 10/12/09 15:53, Gleb Natapov wrote:
> On Mon, Oct 12, 2009 at 03:45:47PM +0200, Gerd Hoffmann wrote:
> > > > > > We should fix qemu to re-read bios from flash.
> > > > > > Makes sense?
> > > > > We have option_rom_setup_reset() already.
> > > >
> > > > We don't, anymore :)
> > > We are fast! Well, we surely have something similar instead.
> >
> > Sure.  Try 'info roms'.  Everything listed there will be reloaded on
> > reset (unless mem=rom, in which case the guest should not be able to
> > modify the bits in the first place).  That includes vgabios,
> > optionroms, -kernel images, ...
> And what about bios? I don't see it there.

pc.c does some magic here to map the complete bios into high memory and 
the legacy part at 0xe0000, thats why it is loaded in a different way. 
It gets loaded to IO_MEM_ROM memory though, so the guest should not be 
able to corrupt it.

cheers,
  Gerd