From: "H. Peter Anvin" <hpa@zytor.com>
To: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: Tony Luck <tony.luck@gmail.com>,
linux-kernel@vger.kernel.org, davej@redhat.com,
kees.cook@canonical.com, davem@davemloft.net, eranian@google.com,
torvalds@linux-foundation.org, adobriyan@gmail.com,
penberg@kernel.org, Arjan van de Ven <arjan@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Valdis.Kletnieks@vt.edu, Ingo Molnar <mingo@elte.hu>,
pageexec@freemail.hu
Subject: Re: [RFC][PATCH] Randomize kernel base address on boot
Date: Tue, 24 May 2011 16:14:11 -0700 [thread overview]
Message-ID: <4DDC3BC3.4010804@zytor.com> (raw)
In-Reply-To: <4DDC31DF.5010303@zytor.com>
On 05/24/2011 03:31 PM, H. Peter Anvin wrote:
>
> Arguably this is really something that would be *much* better done in
> the bootloader, but given that the dominant boot loader for Linux is
> Grub, I don't expect that anything will ever happen until the cows come
> home :(
>
This pretty much means we need an opt-out for this. I think we need
this both in the form of a boot protocol flag bit (for the case where
the boot loader knows what it's doing, and what the kernel to stay put;
perhaps it has already randomized) and a kernel command-line option
(which can be parsed early and set the above flag.)
-hpa
next prev parent reply other threads:[~2011-05-24 23:14 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-24 20:31 [RFC][PATCH] Randomize kernel base address on boot Dan Rosenberg
2011-05-24 21:02 ` Ingo Molnar
2011-05-24 22:55 ` Dan Rosenberg
2011-05-24 21:16 ` Ingo Molnar
2011-05-24 23:00 ` Dan Rosenberg
2011-05-25 11:23 ` Ingo Molnar
2011-05-25 14:20 ` Dan Rosenberg
2011-05-25 14:29 ` Ingo Molnar
2011-05-24 23:06 ` H. Peter Anvin
2011-05-25 14:03 ` Dan Rosenberg
2011-05-25 14:14 ` Ingo Molnar
2011-05-25 15:48 ` H. Peter Anvin
2011-05-25 16:15 ` Dan Rosenberg
2011-05-25 16:24 ` H. Peter Anvin
2011-05-24 21:46 ` Brian Gerst
2011-05-24 23:01 ` Dan Rosenberg
2011-05-24 22:31 ` H. Peter Anvin
2011-05-24 23:04 ` Dan Rosenberg
2011-05-24 23:07 ` H. Peter Anvin
2011-05-24 23:34 ` Dan Rosenberg
2011-05-24 23:36 ` H. Peter Anvin
2011-05-24 23:14 ` H. Peter Anvin [this message]
2011-05-24 23:08 ` Dan Rosenberg
2011-05-25 2:05 ` Dan Rosenberg
2011-05-26 20:01 ` Vivek Goyal
2011-05-26 20:06 ` Dan Rosenberg
2011-05-26 20:16 ` Valdis.Kletnieks
2011-05-26 20:31 ` Vivek Goyal
2011-05-27 9:36 ` Ingo Molnar
2011-05-26 20:35 ` Vivek Goyal
2011-05-26 20:40 ` Vivek Goyal
2011-05-26 20:44 ` Dan Rosenberg
2011-05-26 20:55 ` Vivek Goyal
2011-05-27 9:38 ` Ingo Molnar
2011-05-27 13:07 ` Vivek Goyal
2011-05-27 13:38 ` Ingo Molnar
2011-05-27 13:13 ` Vivek Goyal
2011-05-27 13:21 ` Dan Rosenberg
2011-05-27 13:46 ` Ingo Molnar
2011-05-27 13:50 ` Vivek Goyal
2011-05-26 20:39 ` Dan Rosenberg
2011-05-27 7:15 ` Ingo Molnar
2011-05-31 16:52 ` Matthew Garrett
2011-05-31 18:40 ` H. Peter Anvin
2011-05-31 18:51 ` Matthew Garrett
2011-05-31 19:03 ` Dan Rosenberg
2011-05-31 19:07 ` H. Peter Anvin
2011-05-31 19:50 ` Ingo Molnar
2011-05-31 19:55 ` Ingo Molnar
2011-05-31 20:15 ` H. Peter Anvin
2011-05-31 20:27 ` Ingo Molnar
2011-05-31 20:30 ` H. Peter Anvin
2011-06-01 6:18 ` Ingo Molnar
2011-06-01 15:44 ` H. Peter Anvin
2011-05-31 20:17 ` Dan Rosenberg
2011-05-26 22:18 ` Rafael J. Wysocki
2011-05-26 22:32 ` H. Peter Anvin
2011-05-27 0:26 ` Dan Rosenberg
2011-05-27 16:21 ` Rafael J. Wysocki
2011-05-27 2:45 ` Dave Jones
2011-05-27 9:40 ` Ingo Molnar
2011-05-27 16:11 ` Rafael J. Wysocki
2011-05-27 16:07 ` Rafael J. Wysocki
2011-05-27 15:42 ` Linus Torvalds
2011-05-27 16:11 ` Dan Rosenberg
2011-05-27 17:00 ` Ingo Molnar
2011-05-27 17:06 ` H. Peter Anvin
2011-05-27 17:10 ` Dan Rosenberg
2011-05-27 17:13 ` H. Peter Anvin
2011-05-27 17:16 ` Linus Torvalds
2011-05-27 17:38 ` Ingo Molnar
2011-05-27 17:20 ` Kees Cook
2011-05-27 17:16 ` Ingo Molnar
2011-05-27 17:21 ` Linus Torvalds
2011-05-27 17:46 ` Ingo Molnar
2011-05-27 17:53 ` H. Peter Anvin
2011-05-27 18:05 ` Linus Torvalds
2011-05-27 19:15 ` Vivek Goyal
2011-05-27 21:37 ` H. Peter Anvin
2011-05-27 23:51 ` H. Peter Anvin
2011-05-28 12:18 ` Ingo Molnar
2011-05-29 1:13 ` H. Peter Anvin
2011-05-29 12:47 ` Ingo Molnar
2011-05-29 18:19 ` H. Peter Anvin
2011-05-29 18:44 ` Ingo Molnar
2011-05-29 18:52 ` H. Peter Anvin
2011-05-29 19:56 ` Ingo Molnar
2011-05-27 17:57 ` Linus Torvalds
2011-05-27 18:17 ` Ingo Molnar
2011-05-27 18:43 ` Kees Cook
2011-05-27 18:48 ` david
2011-05-27 21:51 ` Olivier Galibert
2011-05-27 22:11 ` Valdis.Kletnieks
2011-05-28 0:50 ` H. Peter Anvin
2011-05-28 6:32 ` Ingo Molnar
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