Re: [PATCH] x86: e820: fix memmap kernel boot parameter

[Dan Aloni]

On Fri, Aug 30, 2013 at 01:47:53PM +0800, Bob Liu wrote:
>[..]
> Machine2: bootcmdline in grub.cfg "memmap=0x77ffffff$0x880000000", the result of
> "cat /proc/cmdline" changed to "memmap=0x77ffffffx880000000".
> 
> I didn't find the root cause, I think maybe grub reserved "$0" as something
> special.
> Replace '$' with '%' in kernel boot parameter can fix this issue.

You are correct with the root cause, however I don't think the patch is needed.

In order to bypass grub's variable evaluation you can simply use escaping 
and replace $ with \$ in your grub config.

-- 
Dan Aloni
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