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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4855FC70.9050900@zytor.com>
Date:	Sun, 15 Jun 2008 22:38:56 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Huang, Ying" <ying.huang@...el.com>
CC:	Yinghai Lu <yhlu.kernel@...il.com>, Ingo Molnar <mingo@...e.hu>,
	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

Huang, Ying wrote:
> 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.
> 

That doesn't mean we can't use the E820 memory map structure for it.  We 
just have to define a new kernel-internal memory type, instead of using 
type 2 (reserved).

	-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/