Re: [Qemu-devel] [PATCH 0/4] Add multiboot support (x86) v3

[Anthony Liguori <anthony@codemonkey.ws>]

Alexander Graf wrote:
>
> On 22.06.2009, at 16:22, Anthony Liguori wrote:
>
>> Alexander Graf wrote:
>>> This patch implements support for Multiboot on x86 for -kernel.
>>> Multiboot is a "new" approach to get rid of different bootloaders, 
>>> providing
>>> a unified interface for the kernel. It supports command line options 
>>> and
>>> kernel modules.
>>>
>>
>> Works booting Xen from Fedora 8 and doesn't regress -kernel.
>>
>> However, when using multiboot, the ROMs don't survive a reboot.  If 
>> you look at how -kernel is implemented, you'll various calls 
>> option_rom_reset() to cover not just the roms but also the 
>> kernel/initrd bits.  You'll need to do the same thing for multiboot.
>
> Does -kernel with a Linux kernel survive a reboot?

Yes.

> Also, do we still want to use the -kernel after a reboot or rather go 
> through the normal boot order?

We want -kernel to keep working.

> Is there an easy way to get a callback when we get #reset?

qemu_register_reset().  But you very likely want to use option_rom_reset().

Regards,

Anthony Liguori