From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>,
Jacob Shin <jacob.shin@amd.com>, Tom Rini <trini@ti.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@kernel.org" <stable@kernel.org>
Subject: Re: BUG: 1bbbbe7 (x86: Exclude E820_RESERVED regions...) PANIC on boot
Date: Mon, 22 Oct 2012 14:27:38 -0700 [thread overview]
Message-ID: <5085BA4A.30800@zytor.com> (raw)
In-Reply-To: <CAE9FiQVt5LN6_wDvS2G+UULD4Ba2CF=zLhg4RULSKbfbct0NLg@mail.gmail.com>
On 10/22/2012 02:25 PM, Yinghai Lu wrote:
> On Mon, Oct 22, 2012 at 1:52 PM, H. Peter Anvin <hpa@linux.intel.com> wrote:
>> On 10/22/2012 01:50 PM, Yinghai Lu wrote:
>>> ok, let's see if we can meet this extreme corner case except user
>>> specify not page aligned "memmap="
>>
>> If it is *only* memmap= there is a very simple solution: if the memmap
>> is RAM then we round up the starting address and round down the end
>> address; if the memmap is not RAM then we round up instead...
>
> We never know that bios guys will not let bios produce crazy e820 map.
>
Yeah, well, that just *will* happen... that's a given.
We can trim those ranges, though. Who cares if we lose some RAM.
-hpa
next prev parent reply other threads:[~2012-10-22 21:27 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <903a3ead-98b5-4afa-88a4-3dc723895e82@blur>
[not found] ` <d556fc0f-da5d-4531-b331-6dc086461f34@blur>
2012-10-21 0:17 ` Tom Rini
2012-10-21 4:01 ` Yinghai Lu
2012-10-21 4:18 ` Jacob Shin
2012-10-21 17:51 ` Tom Rini
2012-10-21 21:06 ` Jacob Shin
2012-10-21 21:23 ` Tom Rini
2012-10-22 14:40 ` Jacob Shin
2012-10-22 18:05 ` Yinghai Lu
2012-10-22 18:38 ` Jacob Shin
2012-10-22 19:46 ` Yinghai Lu
2012-10-22 20:26 ` H. Peter Anvin
2012-10-22 20:50 ` Yinghai Lu
2012-10-22 20:52 ` H. Peter Anvin
2012-10-22 21:25 ` Yinghai Lu
2012-10-22 21:27 ` H. Peter Anvin [this message]
2012-10-22 23:35 ` Yinghai Lu
2012-10-24 16:48 ` Jacob Shin
2012-10-24 18:53 ` H. Peter Anvin
2012-10-24 19:53 ` Jacob Shin
2012-10-24 21:49 ` [tip:x86/urgent] x86, mm: Find_early_table_space based on ranges that are actually being mapped tip-bot for Jacob Shin
2012-10-25 6:42 ` Yinghai Lu
2012-10-25 7:55 ` Ingo Molnar
2012-10-25 14:33 ` Yinghai Lu
2012-10-25 22:23 ` Jacob Shin
2012-10-25 23:31 ` [tip:x86/urgent] x86, mm: Undo incorrect revert in arch/x86/mm/ init.c tip-bot for Yinghai Lu
2012-10-24 19:01 ` [tip:x86/urgent] x86, mm: Trim memory in memblock to be page aligned tip-bot for Yinghai Lu
2012-10-24 19:02 ` [tip:x86/urgent] x86, mm: Use memblock memory loop instead of e820_RAM tip-bot for Yinghai Lu
2012-10-22 21:00 ` BUG: 1bbbbe7 (x86: Exclude E820_RESERVED regions...) PANIC on boot H. Peter Anvin
2012-10-22 21:06 ` Yinghai Lu
2012-10-28 20:48 ` Tom Rini
2012-10-21 17:52 ` Tom Rini
2012-10-21 0:06 Tom Rini
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