Re: [Qemu-devel] Use of flash for x86 BIOS (was: [PATCH 0/2] Implement migration support for pflash_cfi01)

[Peter Maydell]

On 21 March 2013 07:45, Markus Armbruster <address@hidden> wrote:
> [Note cc: Jordan, who added flash to x86 in commit bd183c79]
>
> Peter Maydell <address@hidden> writes:
>
>> These patches implement migration support for pflash_cfi01.
>> The first patch just drops some useless state so we don't
>> have to think about it for migration.
>>
>> NB that pflash_cfi01 is used in the x86 pc model. I think this
>> means that migration while the BIOS is accessing the flash
>> wouldn't have worked properly. Since migration from a device
>> with no vmstate to one with vmstate works OK this shouldn't
>> break cross-version migration. However x86 maintainers may
>> wish to review and confirm this for themselves...
>
> x86 maintainers may wish to *switch it off* until it's done fully and
> properly, by setting "pc-sysfw" property "rom_only" to 1.

So does that mean that these patches can't be applied until
the rom_only property is set, or is that a fix that can be made
independently?

thanks
-- PMM