linux-kernel - Re: [Patch 8/8] kexec: allow to shrink reserved memory

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]

Date:	Fri, 21 Aug 2009 09:34:52 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Amerigo Wang <amwang@...hat.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org, tony.luck@...el.com,
	linux-ia64@...r.kernel.org, linux-mm@...ck.org,
	Neil Horman <nhorman@...hat.com>,
	Andi Kleen <andi@...stfloor.org>, akpm@...ux-foundation.org,
	bernhard.walle@....de, Fenghua Yu <fenghua.yu@...el.com>,
	Ingo Molnar <mingo@...e.hu>,
	Anton Vorontsov <avorontsov@...mvista.com>
Subject: Re: [Patch 8/8] kexec: allow to shrink reserved memory

On Thu, 20 Aug 2009 17:15:56 +0800
Amerigo Wang <amwang@...hat.com> wrote:
    
> > The, problem is whether memmap is there or not. That's all.
> > plz see init sequence and check there are memmap.
> > If memory-for-crash is obtained via bootmem,
> > Don't you try to free memory hole ?
> >   
> 
> Hi,
> 
> It looks like that mem_map has 'struct page' for the reserved memory, I 
> checked my "early_node_map[] active PFN ranges" output, the reserved 
> memory area for crash kernel is right in one range. Am I missing 
> something here?
> 
> I don't know why that oops comes out, maybe because of no PTE for thoese 
> pages?
> 
Hmm ? Could you show me the code you use ?

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/