linux-kernel - RE: [ RESEND PATCH v3] Memory-Hotplug: Fix the bug on interface /dev/mem for 64-bit kernel

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: <DA586906BA1FFC4384FCFD6429ECE860316C01D6@shzsmsx502.ccr.corp.intel.com>
Date:	Tue, 12 Jan 2010 16:57:40 +0800
From:	"Zheng, Shaohui" <shaohui.zheng@...el.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	"y-goto@...fujitsu.com" <y-goto@...fujitsu.com>,
	Dave Hansen <haveblue@...ibm.com>,
	"x86@...nel.org" <x86@...nel.org>
Subject: RE: [ RESEND PATCH v3] Memory-Hotplug: Fix the bug on interface
 /dev/mem for 64-bit kernel

3 points...
1. I think this patch cannot be compiled in archs other than x86. Right ?
   IOW, please add static inline dummy...
[Zheng, Shaohui] Agree, I will add a static dummy function

2. pgdat->[start,end], totalram_pages etc...are updated at memory hotplug.
   Please place the hook nearby them.
[Zheng, Shaohui] Agree.

3. I recommend you yo use memory hotplug notifier.
   If it's allowed, it will be cleaner.
   It seems there are no strict ordering to update parameters this patch touches.

[Zheng, Shaohui] Kame, do you means put the hook into function slab_mem_going_online_callback, it seems a good idea. If we select this method, we will need not to update these variable in function add_memory explicitly.

Thanks,
-Kame

--
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/