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
