Re: [Xen-devel] [PATCH V5 06/15] Add efi_arch_handle_cmdline() for processing commandline

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 24.09.14 at 11:33, <Ian.Campbell@xxxxxxxxxx> wrote:
> On Wed, 2014-09-24 at 09:13 +0100, Jan Beulich wrote:
>> >>> On 24.09.14 at 02:09, <roy.franz@xxxxxxxxxx> wrote:
>> > Is this second "--" handled by XEN itself?  I don't see any handling
>> > of that in the EFI boot code.  The only thing that goes
>> > into the multiboot .string field for the dom0 kernel is from the config 
>> > file.
>> 
>> Yes, that's being handled in __start_xen() (search for "kextra" if
>> you want to see where exactly).
> 
> I'd never heard of this behaviour before, and it is (currently at least)
> x86 specific.

Yeah, we needed this a long while ago for the case where the GrUB
GUI shows only a single line for entering extra options, which then
all get passed to the hypervisor making it impossible to add extra
Dom0 kernel options this same way.

> I don't know if this is relevant to the discusion here though, probably
> not?

Definitely not. I just didn't want to leave Roy's question unanswered.

Jan


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