grub.cfg kernel argument parsing

[Brett Grandbois]

Looks like the parser is doing variable expansion on the '$' and 
backslash escaping isn't supported?

Try wrapping the address in single quotes, the parser should soak up 
everything in between as-is:

memmap='0x0000000080000000$0000000080000000'


On 26/05/18 01:56, Brian Varney wrote:
> Hello all,
>
> I have a Power9 server that came with petitboot installed. I was able 
> to put the PPC version of Fedora 28 on it and that went fine.  
> However, I need to add some kernel parameters to grub.cfg and it seems 
> they are not parsed correctly by petitboot.
>
> I tried adding the following kernel parameter to grub.cfg
> *memmap=0x0000000080000000$0000000080000000*
>
> However, when fedora boots, I get the following from 'cat 
> /proc/cmdline': (notice '$0' was removed)
> *memmap=0x0000000080000000x0000000080000000*
>
>
>
> Next, I tried escaping with backsplash in grub.cfg:
> *memmap=0x0000000080000000\$0000000080000000*
>
> But this came out as the following in 'cat /proc/cmdline' (backslash 
> remained and '$0' still removed)
> *memmap=0x0000000080000000\x0000000080000000*
>
>
> Anybody know how to properly escape the $ so petitboot doesn't swallow 
> it up?  Any help would be greatly appreciated
>
> Thanks!
> Brian V.
>
>
>
>
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> Petitboot at lists.ozlabs.org
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