From: "H. Peter Anvin" <hpa@zytor.com>
To: Jacob Shin <jacob.shin@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Yinghai Lu <yinghai.lu@oracle.com>,
Andreas Herrmann <andreas.herrmann3@amd.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] x86: Exclude E820_RESERVED regions and memory holes above 4 GB from direct mapping.
Date: Thu, 20 Oct 2011 15:20:18 -0700 [thread overview]
Message-ID: <4EA09EA2.3030203@zytor.com> (raw)
In-Reply-To: <1319145326-13902-1-git-send-email-jacob.shin@amd.com>
On 10/20/2011 02:15 PM, Jacob Shin wrote:
> On systems with very large memory (1 TB in our case), BIOS may report a
> reserved region or a hole in the E820 map, even above the 4 GB range. Exclude
> these from the direct mapping.
> + if (ei->type == E820_RESERVED)
> + continue;
This should probably be ei->type != E820_RAM or something similar. I
haven't looked yet, what does the < 4 GiB code do?
-hpa
next prev parent reply other threads:[~2011-10-20 22:20 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-20 21:15 [PATCH 1/1] x86: Exclude E820_RESERVED regions and memory holes above 4 GB from direct mapping Jacob Shin
2011-10-20 21:28 ` Andi Kleen
2011-10-20 21:30 ` H. Peter Anvin
2011-10-20 21:32 ` H. Peter Anvin
2011-10-20 22:10 ` Jacob Shin
2011-10-20 22:43 ` H. Peter Anvin
2011-10-20 22:20 ` H. Peter Anvin [this message]
2011-10-20 22:26 ` Jacob Shin
2011-12-14 22:42 ` H. Peter Anvin
2011-12-14 23:14 ` Jacob Shin
2011-12-16 16:20 ` Jacob Shin
2011-12-16 17:42 ` Yinghai Lu
2011-12-16 17:54 ` H. Peter Anvin
2011-12-16 18:29 ` Yinghai Lu
2011-12-16 18:32 ` H. Peter Anvin
2011-12-16 20:59 ` Yinghai Lu
2011-12-17 0:57 ` H. Peter Anvin
2012-10-17 19:17 ` [tip:x86/urgent] " tip-bot for Jacob Shin
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