Message-ID: <4967D223.1090703@zytor.com>
Date: Fri, 09 Jan 2009 14:39:31 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Suresh Siddha <suresh.b.siddha@intel.com>
CC: mingo@elte.hu, tglx@linutronix.de, venkatesh.pallipadi@intel.com,
       linux-kernel@vger.kernel.org, tvignaud@mandriva.com
Subject: Re: [patch] x86, pat: fix reserve_memtype() for legacy 1MB range
References: <20090109223520.GC6472@linux-os.sc.intel.com>
In-Reply-To: <20090109223520.GC6472@linux-os.sc.intel.com>
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Suresh Siddha wrote:
> 
> Here X is trying to map first 8KB of memory using /dev/mem. Existing
> code treats first 0-4KB of memory as non-RAM and 4KB-8KB as RAM. Recent
> code changes don't allow to map memory with different attributes
> at the same time.
> 

Why was 0-4 KB marked as non-RAM?  It is most definitely RAM, and should 
be WB.

	-hpa
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