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From: "H. Peter Anvin" <hpa@zytor.com>
To: Kees Cook <keescook@chromium.org>
Cc: Eric Northup <digitaleric@google.com>,
	Yinghai Lu <yinghai@kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"kernel-hardening@lists.openwall.com"
	<kernel-hardening@lists.openwall.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	the arch/x86 maintainers <x86@kernel.org>,
	Jarkko Sakkinen <jarkko.sakkinen@intel.com>,
	Matthew Garrett <mjg@redhat.com>,
	Matt Fleming <matt.fleming@intel.com>,
	Dan Rosenberg <drosenberg@vsecurity.com>,
	Julien Tinnes <jln@google.com>, Will Drewry <wad@chromium.org>
Subject: [kernel-hardening] Re: [PATCH 6/6] x86: kaslr: relocate base offset at boot
Date: Mon, 15 Apr 2013 19:40:29 -0700	[thread overview]
Message-ID: <516CBA1D.8070306@zytor.com> (raw)
In-Reply-To: <516CB7EE.8070702@zytor.com>

On 04/15/2013 07:31 PM, H. Peter Anvin wrote:
> 
> I also am starting to think that this really would be done better being
> integrated with the decompressor code, since that code already ends up
> moving the code around... no reason to do this again.
> 

Another good reason to do this in the decompressor wrapper: it can be
written in C that way.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa@zytor.com>
To: Kees Cook <keescook@chromium.org>
Cc: Eric Northup <digitaleric@google.com>,
	Yinghai Lu <yinghai@kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"kernel-hardening@lists.openwall.com" 
	<kernel-hardening@lists.openwall.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	the arch/x86 maintainers <x86@kernel.org>,
	Jarkko Sakkinen <jarkko.sakkinen@intel.com>,
	Matthew Garrett <mjg@redhat.com>,
	Matt Fleming <matt.fleming@intel.com>,
	Dan Rosenberg <drosenberg@vsecurity.com>,
	Julien Tinnes <jln@google.com>, Will Drewry <wad@chromium.org>
Subject: Re: [PATCH 6/6] x86: kaslr: relocate base offset at boot
Date: Mon, 15 Apr 2013 19:40:29 -0700	[thread overview]
Message-ID: <516CBA1D.8070306@zytor.com> (raw)
In-Reply-To: <516CB7EE.8070702@zytor.com>

On 04/15/2013 07:31 PM, H. Peter Anvin wrote:
> 
> I also am starting to think that this really would be done better being
> integrated with the decompressor code, since that code already ends up
> moving the code around... no reason to do this again.
> 

Another good reason to do this in the decompressor wrapper: it can be
written in C that way.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


  reply	other threads:[~2013-04-16  2:40 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-12 20:13 [kernel-hardening] [PATCH v2 0/6] kernel ASLR Kees Cook
2013-04-12 20:13 ` Kees Cook
2013-04-12 20:13 ` [kernel-hardening] [PATCH 1/6] x86: relocs: generalize Elf structure names Kees Cook
2013-04-12 20:13   ` Kees Cook
2013-04-16 23:17   ` [tip:x86/kaslr] x86, relocs: Generalize ELF " tip-bot for Kees Cook
2013-04-12 20:13 ` [kernel-hardening] [PATCH 2/6] x86: relocs: consolidate processing logic Kees Cook
2013-04-12 20:13   ` Kees Cook
2013-04-16 23:18   ` [tip:x86/kaslr] x86, relocs: Consolidate " tip-bot for Kees Cook
2013-04-12 20:13 ` [kernel-hardening] [PATCH 3/6] x86: relocs: add 64-bit ELF support to relocs tool Kees Cook
2013-04-12 20:13   ` Kees Cook
2013-04-16 23:19   ` [tip:x86/kaslr] x86, relocs: Add " tip-bot for Kees Cook
2013-04-12 20:13 ` [kernel-hardening] [PATCH 4/6] x86: relocs: build separate 32/64-bit tools Kees Cook
2013-04-12 20:13   ` Kees Cook
2013-04-16 22:21   ` [kernel-hardening] " H. Peter Anvin
2013-04-16 22:21     ` H. Peter Anvin
2013-04-16 22:38     ` [kernel-hardening] " Kees Cook
2013-04-16 22:38       ` Kees Cook
2013-04-16 22:39       ` [kernel-hardening] " H. Peter Anvin
2013-04-16 22:39         ` H. Peter Anvin
2013-04-16 23:20   ` [tip:x86/kaslr] x86, relocs: Build " tip-bot for Kees Cook
2013-04-16 23:22   ` [tip:x86/kaslr] x86, relocs: Refactor the relocs tool to merge 32- and 64-bit ELF tip-bot for H. Peter Anvin
2013-04-12 20:13 ` [kernel-hardening] [PATCH 5/6] x86: kaslr: routines to choose random base offset Kees Cook
2013-04-12 20:13   ` Kees Cook
2013-04-14  0:11   ` [kernel-hardening] " Yinghai Lu
2013-04-14  0:11     ` Yinghai Lu
2013-04-12 20:13 ` [kernel-hardening] [PATCH 6/6] x86: kaslr: relocate base offset at boot Kees Cook
2013-04-12 20:13   ` Kees Cook
2013-04-14  0:37   ` [kernel-hardening] " Yinghai Lu
2013-04-14  0:37     ` Yinghai Lu
2013-04-14  3:06     ` [kernel-hardening] " H. Peter Anvin
2013-04-14  3:06       ` H. Peter Anvin
2013-04-15 21:06       ` [kernel-hardening] " Eric Northup
2013-04-15 21:06         ` Eric Northup
2013-04-15 21:25         ` [kernel-hardening] " H. Peter Anvin
2013-04-15 21:25           ` H. Peter Anvin
2013-04-15 21:41           ` [kernel-hardening] " Kees Cook
2013-04-15 21:41             ` Kees Cook
2013-04-15 21:44             ` [kernel-hardening] " Eric Northup
2013-04-15 21:44               ` Eric Northup
2013-04-15 21:46             ` [kernel-hardening] " H. Peter Anvin
2013-04-15 21:46               ` H. Peter Anvin
2013-04-15 21:59               ` [kernel-hardening] " Kees Cook
2013-04-15 21:59                 ` Kees Cook
2013-04-16  2:31                 ` [kernel-hardening] " H. Peter Anvin
2013-04-16  2:31                   ` H. Peter Anvin
2013-04-16  2:40                   ` H. Peter Anvin [this message]
2013-04-16  2:40                     ` H. Peter Anvin
2013-04-16 16:08                     ` [kernel-hardening] " Kees Cook
2013-04-16 16:08                       ` Kees Cook
2013-04-15 22:00               ` [kernel-hardening] " Yinghai Lu
2013-04-15 22:00                 ` Yinghai Lu
2013-04-15 22:07                 ` [kernel-hardening] " Kees Cook
2013-04-15 22:07                   ` Kees Cook
2013-04-15 22:38                   ` [kernel-hardening] " Yinghai Lu
2013-04-15 22:38                     ` Yinghai Lu
2013-04-15 22:42                     ` [kernel-hardening] " Kees Cook
2013-04-15 22:42                       ` Kees Cook
2013-04-15 22:57                       ` [kernel-hardening] " Yinghai Lu
2013-04-15 22:57                         ` Yinghai Lu
2013-04-16  2:34                     ` [kernel-hardening] " H. Peter Anvin
2013-04-16  2:34                       ` H. Peter Anvin
2013-04-16  2:36                 ` [kernel-hardening] " H. Peter Anvin
2013-04-16  2:36                   ` H. Peter Anvin
2013-04-16  2:56                   ` [kernel-hardening] " Yinghai Lu
2013-04-16  2:56                     ` Yinghai Lu
2013-04-16  3:02                     ` [kernel-hardening] " H. Peter Anvin
2013-04-16  3:02                       ` H. Peter Anvin
2013-04-16 13:08                       ` [kernel-hardening] " Ingo Molnar
2013-04-16 13:08                         ` Ingo Molnar
2013-04-16 13:27                         ` [kernel-hardening] " H. Peter Anvin
2013-04-16 13:27                           ` H. Peter Anvin
2013-04-16 18:08 ` [kernel-hardening] Re: [PATCH v2 0/6] kernel ASLR Kees Cook
2013-04-16 18:08   ` Kees Cook
2013-04-16 18:15   ` [kernel-hardening] " H. Peter Anvin
2013-04-16 18:15     ` H. Peter Anvin

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