From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Paul Jackson <pj@sgi.com>, Andi Kleen <andi@firstfloor.org>,
mingo@elte.hu, bwalle@suse.de, hannes@saeurebad.de,
ying.huang@intel.com, linux-kernel@vger.kernel.org,
steiner@sgi.com
Subject: Re: Confusions with reserve_early, reserve_bootmem, e820, efi, ... on x86_64
Date: Thu, 12 Jun 2008 14:09:11 -0700 [thread overview]
Message-ID: <48519077.2050402@zytor.com> (raw)
In-Reply-To: <86802c440806121329s54bb1e6dobaaa15c26e7dc81c@mail.gmail.com>
Yinghai Lu wrote:
>
> please check that commit that increase the range to 1M.
> it seems at that time, andi and peter had different idea, because
> increase 1M could waste K bytes memory.
>
> also wonder if EFI is there, we still need to ebda?
>
You're not actually suggesting we should throw away this memory, are
you? Reserving it all early is fine, but the memory unused should
eventually be reclaimed.
It's probably safer to reserve the EBDA even with EFI; it's only a page
or so so it doesn't matter much.
-hpa
next prev parent reply other threads:[~2008-06-12 21:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-12 10:06 Confusions with reserve_early, reserve_bootmem, e820, efi, ... on x86_64 Paul Jackson
2008-06-12 12:25 ` Yinghai Lu
2008-06-12 16:19 ` Paul Jackson
2008-06-12 17:05 ` Yinghai Lu
2008-06-12 20:10 ` Paul Jackson
2008-06-12 20:29 ` Yinghai Lu
2008-06-12 21:09 ` H. Peter Anvin [this message]
2008-06-12 21:52 ` Paul Jackson
2008-06-12 22:06 ` Yinghai Lu
2008-06-12 22:13 ` Paul Jackson
2008-06-12 22:39 ` H. Peter Anvin
2008-06-13 0:59 ` Huang, Ying
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