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Re: [Xen-devel] problem using compiled kernel -- Sisu

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] problem using compiled kernel -- Sisu
From: Sander Eikelenboom <linux@xxxxxxxxxxxxxx>
Date: Tue, 27 Jul 2010 23:59:27 +0200
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Sisu Xi <xisisu@xxxxxxxxx>
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Don't know if the bootloader name in the multiboot specs contains the grub 
version number .. so it perhaps could be derived from there ?


See flag 9


Tuesday, July 27, 2010, 11:09:29 PM, you wrote:

> On 27/07/2010 21:37, "Pasi Kärkkäinen" <pasik@xxxxxx> wrote:

>>> what info are missing?
>> You're missing the fact that grub2 is broken..
>> Please read grub2 related entries from:
>> http://wiki.xensource.com/xenwiki/XenCommonProblems

> This is a tricky issue actually. Strictly it is Xen which throws away the
> first parameter on each command line. This is because the Multiboot protocol
> behaviour, as established by GRUB1, is that the command line passed to us
> includes the name of the kernel binary (e.g. xen.gz loglvl=all sync_console)
> and so we strip that off. But GRUB2 has arbitrarily changed behaviour to
> only pass parameters in the command-line string. Hence lopping the first
> item in the string actually lops a parameter. The workaround is to stick
> something dummy as the first parameter, such as a period. This behaviour
> change between GRUB1 and GRUB2 is a pain in the arse.

>  -- Keir

>>>>> (XEN) Command line: loglvl=all guest_loglvl=all sync_console
>>>>> console_to_ring com1=115200,8n1 console=com1
>> See, dom0_mem is missing from there..
>> The same thing happens with dom0 kernel, you lose the first parameter
>> (console=hvc0).
>> -- Pasi
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel

Best regards,
 Sander                            mailto:linux@xxxxxxxxxxxxxx

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