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

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Date:	Fri, 30 Aug 2013 14:15:36 +0800
From:	Bob Liu <lliubbo@...il.com>
To:	Dan Aloni <alonid@...atoscale.com>
Cc:	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>, hpa@...ux.intel.com,
	Yinghai Lu <yinghai@...nel.org>, jacob.shin@....com,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Linux-MM <linux-mm@...ck.org>, Bob Liu <bob.liu@...cle.com>
Subject: Re: [PATCH] x86: e820: fix memmap kernel boot parameter

On Fri, Aug 30, 2013 at 2:14 PM, Dan Aloni <alonid@...atoscale.com> wrote:
> 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.
>

I see, thank you very much!

-- 
Regards,
--Bob
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