Re: passing options to grub in xen,openfirmware and efi

[Olaf Hering]

On Thu, May 07, Vladimir 'φ-coder/phcoder' Serbinenko wrote:

> most other firmwares like EFI or BIOS look for boot image at hardcoded
> place e.g. MBR or ESP at predefined locations or uses NVRAM. The trouble
> with passing this info from dom0 is that it's difficult to discover for
> grub-install where to put image, in some cases this would even make
> install impossible without modifying dom0. I feel like location which
> changes all the time would create more confusion that hardcoded location
> (E.g. I ran grub-install but my system still uses old GRUB)

What do you expect from grub-install in a PV guest? Whatever it does
today its result will be a noop. All that needs to be done is to write
/boot/grub2/grub.cfg. In a PV guest grub2 is the firmware (kernel= in
domU.cfg), and the NVRAM is the cmdline (extra= in domU.cfg).

Olaf