[Qemu-devel] Re: [PATCH v2] [0.12] Map BIOS f-segment as RAM, not as ROM

2009-12-05 Thread Kevin O'Connor
On Fri, Dec 04, 2009 at 11:33:13AM +0100, Alexander Graf wrote: > SeaBIOS needs to write to the f-segment. So it needs to have some way to set > that from read-only to read-write, write in it and when it's done set it to > read-only again. > > On PCI we have a mechanism for that. The ISA machine d

[Qemu-devel] Re: [PATCH v2] [0.12] Map BIOS f-segment as RAM, not as ROM

2009-12-04 Thread Gleb Natapov
On Fri, Dec 04, 2009 at 11:33:13AM +0100, Alexander Graf wrote: > SeaBIOS needs to write to the f-segment. So it needs to have some way to set > that from read-only to read-write, write in it and when it's done set it to > read-only again. > > On PCI we have a mechanism for that. The ISA machine d

[Qemu-devel] Re: [PATCH v2] [0.12] Map BIOS f-segment as RAM, not as ROM

2009-12-04 Thread Anthony Liguori
Alexander Graf wrote: SeaBIOS needs to write to the f-segment. So it needs to have some way to set that from read-only to read-write, write in it and when it's done set it to read-only again. On PCI we have a mechanism for that. The ISA machine does not though. To stay regression free and happil