linux-kernel - Re: [PATCH] x86: use add_highpages_with_active

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Message-ID: <86802c440806140205g3ff113ffq39272c18ef5b9654@mail.gmail.com>
Date:	Sat, 14 Jun 2008 02:05:56 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>, "Huang, Ying" <ying.huang@...el.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: use add_highpages_with_active_regions for high pages init

On Sat, Jun 14, 2008 at 1:23 AM, Ingo Molnar <mingo@...e.hu> wrote:
>
> * Yinghai Lu <yhlu.kernel@...il.com> wrote:
>
>> use early_node_map to init high pages, so can remove page_is_ram and
>> page_is_reserved_early in the big loop with add_one_highpage
>>
>> also remove the page_is_reserved_early that is not needed.
>
> applied to tip/x86/mpparse for testing, thanks.
>
> Andrew: mm/page_alloc.c modification.

Ying Huang,

I removed page_is_reserved_early....it cause init highmem take extra
time on my big box.

please check efi_reserve_early that is calling reserve_early. so need
to make sure "EFI memmap" is reserved in itself...otherwise you may
need to update e820 table by add_memory_region (....,
E820_RESERVED)...

YH
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