From: "H. Peter Anvin" <hpa@zytor.com>
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
Date: Fri, 09 Jan 2009 14:39:31 -0800 [thread overview]
Message-ID: <4967D223.1090703@zytor.com> (raw)
In-Reply-To: <20090109223520.GC6472@linux-os.sc.intel.com>
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
next prev parent reply other threads:[~2009-01-09 22:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-09 22:35 [patch] x86, pat: fix reserve_memtype() for legacy 1MB range Suresh Siddha
2009-01-09 22:39 ` H. Peter Anvin [this message]
2009-01-09 22:48 ` Suresh Siddha
2009-01-09 22:55 ` H. Peter Anvin
2009-01-09 23:13 ` Suresh Siddha
2009-01-09 23:26 ` H. Peter Anvin
2009-01-11 2:07 ` Ingo Molnar
2009-01-17 17:42 ` Pavel Machek
2009-01-17 23:24 ` H. Peter Anvin
2009-01-18 8:08 ` Pavel Machek
2009-01-19 18:45 ` Suresh Siddha
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