From: "Huang, Ying" <ying.huang@intel.com>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: use add_highpages_with_active_regions for high pages init
Date: Mon, 16 Jun 2008 13:37:49 +0800 [thread overview]
Message-ID: <1213594669.10376.19.camel@caritas-dev.intel.com> (raw)
In-Reply-To: <86802c440806152046s71916de8g6f8e3e8d272d336a@mail.gmail.com>
On Sun, 2008-06-15 at 20:46 -0700, Yinghai Lu wrote:
[...]
> don't need,
> EFI memmap should be reserved in e820map, so it should not show up in
> early_node_map.
I don't think so. EFI memmap comes from boot-loader not from BIOS. It
contains boot-loader execution information (such as EfiLoaderCode,
EfiLoaderData, etc), and it will be located at different position for
each system reboot.
If it is reserved in E820 memmap, hibernation can not work. Because the
memory area for EFI memmap is not E820 RAM, it is not saved during
hibernating and restored after restoring from disk.
Linked list of struct setup_data has similar requirement too.
Best Regards,
Huang Ying
next prev parent reply other threads:[~2008-06-16 5:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-14 3:05 [PATCH] x86: replace shrink pages with remove_active_ranges v2 Yinghai Lu
2008-06-14 3:07 ` [PATCH] x86: cleanup reloated_initrd Yinghai Lu
2008-06-14 8:28 ` Ingo Molnar
2008-06-14 18:41 ` H. Peter Anvin
2008-06-14 19:27 ` Yinghai Lu
2008-06-14 19:39 ` H. Peter Anvin
2008-06-14 22:08 ` Yinghai Lu
2008-06-14 6:23 ` [PATCH] x86: replace shrink pages with remove_active_ranges v2 Ingo Molnar
2008-06-14 7:56 ` [PATCH] x86: use add_highpages_with_active_regions for high pages init Yinghai Lu
2008-06-14 8:23 ` Ingo Molnar
2008-06-14 8:50 ` Ingo Molnar
2008-06-14 8:59 ` Ingo Molnar
2008-06-14 9:05 ` Yinghai Lu
2008-06-16 1:20 ` Huang, Ying
2008-06-16 3:46 ` Yinghai Lu
2008-06-16 4:39 ` Yinghai Lu
2008-06-16 5:37 ` Huang, Ying [this message]
2008-06-16 5:38 ` H. Peter Anvin
2008-06-16 5:43 ` Yinghai Lu
2008-06-16 5:45 ` Huang, Ying
2008-06-15 1:32 ` [PATCH] x86: use add_highpages_with_active_regions for high pages init v2 Yinghai Lu
2008-06-16 8:09 ` Ingo Molnar
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