From: "H. Peter Anvin" <hpa@zytor.com>
To: Jacob Shin <jacob.shin@amd.com>
Cc: X86-ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
Yinghai Lu <yinghai@kernel.org>, Tejun Heo <tj@kernel.org>,
Dave Young <dyoung@redhat.com>, Chao Wang <chaowang@redhat.com>,
Vivek Goyal <vgoyal@redhat.com>,
Andreas Herrmann <andreas.herrmann3@amd.com>,
Borislav Petkov <borislav.petkov@amd.com>
Subject: Re: [PATCH 3/5] x86: Only direct map addresses that are marked as E820_RAM
Date: Fri, 24 Aug 2012 18:13:02 -0700 [thread overview]
Message-ID: <5038269E.80707@zytor.com> (raw)
In-Reply-To: <20120825004859.GB10812@jshin-Toonie>
On 08/24/2012 05:49 PM, Jacob Shin wrote:
>
> Right, I think what I was attempting to do was to merge the 1MB
> with E820_RAM right above 1MB:
>
> So instead of:
>
> init_memory_mapping(0, 1MB)
> init_memory_mapping(1MB, 2GB)
>
> It would be:
>
> init_memory_mapping(0, 2GB)
>
> While taking care of the odd case where there is a gap right after
> 1MB.
>
> But if its not worth it, I can move it out of the loop.
>
What is the benefit?
-hpa
next prev parent reply other threads:[~2012-08-25 1:13 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-24 23:55 [PATCH V4 0/5] x86: Create direct mappings for E820_RAM only Jacob Shin
2012-08-24 23:55 ` [PATCH 1/5] x86: Move enabling of PSE and PGE out of init_memory_mapping Jacob Shin
2012-08-25 1:25 ` Yinghai Lu
2012-08-25 1:49 ` Yinghai Lu
2012-08-25 2:06 ` Yinghai Lu
2012-08-25 4:15 ` Jacob Shin
2012-08-25 4:13 ` Jacob Shin
2012-08-24 23:55 ` [PATCH 2/5] x86: find_early_table_space based on memory ranges that are being mapped Jacob Shin
2012-10-21 21:22 ` Tom Rini
2012-08-24 23:55 ` [PATCH 3/5] x86: Only direct map addresses that are marked as E820_RAM Jacob Shin
2012-08-25 0:17 ` Jacob Shin
2012-08-25 0:30 ` H. Peter Anvin
2012-08-25 0:49 ` Jacob Shin
2012-08-25 1:13 ` H. Peter Anvin [this message]
2012-08-25 4:20 ` Jacob Shin
2012-08-25 4:21 ` H. Peter Anvin
2012-08-27 19:17 ` Jacob Shin
2012-08-27 20:15 ` H. Peter Anvin
2012-08-25 1:07 ` Yinghai Lu
2012-08-25 4:24 ` Jacob Shin
2012-08-25 4:54 ` Yinghai Lu
2012-08-27 18:49 ` Jacob Shin
2012-08-27 20:16 ` H. Peter Anvin
2012-08-28 16:06 ` Jacob Shin
2012-08-28 16:11 ` H. Peter Anvin
2012-08-24 23:55 ` [PATCH 4/5] x86: Fixup code testing if a pfn is direct mapped Jacob Shin
2012-08-24 23:55 ` [PATCH 5/5] x86: if kernel .text .data .bss are not marked as E820_RAM, complain and fix Jacob Shin
2012-08-25 1:23 ` Yinghai Lu
2012-08-25 4:25 ` Jacob Shin
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