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From: Arjan van de Ven <arjan@infradead.org>
To: Andi Kleen <ak@suse.de>
Cc: ying.huang@intel.com, tglx@linutronix.de, mingo@elte.hu,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [6/8] Account overlapped mappings in end_pfn_map
Date: Mon, 11 Feb 2008 07:12:37 -0800 [thread overview]
Message-ID: <20080211071237.36324cb2@laptopd505.fenrus.org> (raw)
In-Reply-To: <20080211093434.E30961B41CE@basil.firstfloor.org>
On Mon, 11 Feb 2008 10:34:34 +0100 (CET)
Andi Kleen <ak@suse.de> wrote:
>
> When end_pfn is not aligned to 2MB (or 1GB) then the kernel might
> map more memory than end_pfn. Account this in end_pfn_mapped.
we need to fix this btw; mapping memory that doesn't really exist
is a rather nasty trap with cpu prefetching and the like.
--
If you want to reach me at my work email, use arjan@linux.intel.com
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2008-02-11 15:13 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-11 9:34 [PATCH] [0/8] Various kernel mapping bug fixes Andi Kleen
2008-02-11 9:34 ` [PATCH] [1/8] CPA: Fix gbpages support in try_preserve_lage_page Andi Kleen
2008-02-11 9:45 ` Thomas Gleixner
2008-02-11 10:12 ` Ingo Molnar
2008-02-11 11:01 ` Andi Kleen
2008-02-11 9:34 ` [PATCH] [2/8] CPA: Flush the caches when setting pages not present Andi Kleen
2008-02-11 11:00 ` Ingo Molnar
2008-02-11 12:26 ` Andi Kleen
2008-02-11 9:34 ` [PATCH] [3/8] CPA: Test the correct mapping alias on x86-64 Andi Kleen
2008-02-11 11:49 ` Ingo Molnar
2008-02-11 9:34 ` [PATCH] [4/8] CPA: Fix set_memory_x for ioremap Andi Kleen
2008-02-11 12:27 ` Ingo Molnar
2008-02-11 12:45 ` Andi Kleen
2008-02-11 9:34 ` [PATCH] [5/8] Fix logic error in 64bit memory hotadd Andi Kleen
2008-02-11 12:46 ` Ingo Molnar
2008-02-11 13:05 ` Andi Kleen
2008-02-11 13:33 ` Ingo Molnar
2008-02-11 13:44 ` Andi Kleen
2008-02-12 10:35 ` Yasunori Goto
2008-02-12 11:20 ` Andi Kleen
2008-02-11 9:34 ` [PATCH] [6/8] Account overlapped mappings in end_pfn_map Andi Kleen
2008-02-11 13:08 ` Ingo Molnar
2008-02-11 13:27 ` Andi Kleen
2008-02-11 13:55 ` Ingo Molnar
2008-02-11 14:16 ` Peter Zijlstra
2008-02-11 14:24 ` Andi Kleen
2008-02-11 14:41 ` Sam Ravnborg
2008-02-11 15:12 ` Arjan van de Ven [this message]
2008-02-11 9:34 ` [PATCH] [7/8] Implement true end_pfn_mapped for 32bit Andi Kleen
2008-02-12 19:39 ` Thomas Gleixner
2008-02-12 19:49 ` Andi Kleen
2008-02-12 20:25 ` Thomas Gleixner
2008-02-11 9:34 ` [PATCH] [8/8] RFC: Fix some EFI problems Andi Kleen
2008-02-12 20:04 ` Thomas Gleixner
2008-02-12 20:23 ` Andi Kleen
2008-02-12 20:48 ` Thomas Gleixner
2008-02-13 11:05 ` Andi Kleen
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