linux-kernel - Re: BUG: 1bbbbe7 (x86: Exclude E820_RESERVED regions...) PANIC on boot

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Message-ID: <CAE9FiQU3yM43JXG4pQNgJobFzy+HH_BjtGZ1WG0sBc7Ud6+9KQ@mail.gmail.com>
Date:	Mon, 22 Oct 2012 14:06:53 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Jacob Shin <jacob.shin@....com>, Tom Rini <trini@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...nel.org" <stable@...nel.org>
Subject: Re: BUG: 1bbbbe7 (x86: Exclude E820_RESERVED regions...) PANIC on boot

On Mon, Oct 22, 2012 at 2:00 PM, H. Peter Anvin <hpa@...or.com> wrote:
> On 10/22/2012 01:50 PM, Yinghai Lu wrote:
>>>
>>> We should not map a partial page at the end of RAM; it is functionally
>>> lost.
>>
>> Now we did not, we have max_low_pfn, and max_pfn to cap out end partial page.
>>
>
> Well, it is not just end of RAM, which is where the entire current
> implementation falls apart, obviously.
>

ok, I will fix that from memblock_x86_fill().

after we put the E820_RAM  and E820_RESERVED_KERN in to memblock, do
one trim in memblock.memory.

Thanks

Yinghai Lu
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