linux-kernel - Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is above 512G

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: <CAE9FiQXksVZ-7qVZNw8W-be1J7sDCeciotd-_LxKkjBYVmSRDg@mail.gmail.com>
Date:	Sun, 16 Dec 2012 10:04:01 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Borislav Petkov <bp@...en8.de>, Yinghai Lu <yinghai@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 05/27] x86, 64bit: clear ident mapping when kernel is
 above 512G

On Sun, Dec 16, 2012 at 9:49 AM, Borislav Petkov <bp@...en8.de> wrote:
> On Thu, Dec 13, 2012 at 02:01:59PM -0800, Yinghai Lu wrote:
>> After following patch:
>>       x86, 64bit: Set extra ident mapping for whole kernel range
>>
>> We have extra ident mapping for kernel that is loaded above 1G.
>
> What?
>
> /me looks at next patch
>
> Aaah, the *next* patch adds an extra ident mapping. Why don't you say
> so?
>
>> So need to clear extra pgd entry when kernel is loaded above 512g.
>
> Why then isn't that patch following the next patch instead of coming
> before it?
>

thanks a lot for checking the patch.
this patch is obsolete by #PF handler version.

so if possible, you can check my for-x86-boot branch instead.
   http://git.kernel.org/?p=linux/kernel/git/yinghai/linux-yinghai.git;a=shortlog;h=refs/heads/for-x86-boot

   git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
for-x86-boot

will repost them after HPA is ok with my changes to his #PF handler patch.


Thanks

Yinghai
--
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/