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RE: [RFC PATCH 11/12] e1000e: write protect ICHx NVM to prevent malicious write/erase

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From: Allan, Bruce W <bruce.w.allan@...>
To: Jiri Kosina <jkosina@...>
Cc: Brandeburg, Jesse <jesse.brandeburg@...>, linux-kernel@vger.kernel.org <linux-kernel@...>, linux-netdev@vger.kernel.org <linux-netdev@...>, kkeil@suse.de <kkeil@...>, agospoda@redhat.com <agospoda@...>, arjan@linux.intel.com <arjan@...>, Graham, David <david.graham@...>, Ronciak, John <john.ronciak@...>, Thomas Gleixner <tglx@...>, chris.jones@canonical.com <chris.jones@...>, tim.gardner@intel.com <tim.gardner@...>, airlied@gmail.com <airlied@...>, Olaf Kirch <okir@...>
Subject: RE: [RFC PATCH 11/12] e1000e: write protect ICHx NVM to prevent malicious write/erase
Date: Wednesday, October 1, 2008 - 3:13 pm

On Wednesday, October 01, 2008 6:29 AM, Jiri Kosina wrote:


Only write/erase accesses are blocked by hardware after the protected range and lockdown bits are set in this patch; reads are still allowed.  I just received confirmation that iAMT does not write to the GbE region of the NVM.

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Messages in current thread:
[RFC PATCH 00/12] e1000e debug and protection patches, Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
[RFC PATCH 12/12] update version, Jesse Brandeburg, (Mon Sep 29, 11:20 pm)
[RFC PATCH 11/12] e1000e: write protect ICHx NVM to prevent ..., Jesse Brandeburg, (Mon Sep 29, 11:20 pm)
Re: [RFC PATCH 11/12] e1000e: write protect ICHx NVM to prev..., Jiri Kosina, (Tue Sep 30, 8:40 am)
RE: [RFC PATCH 11/12] e1000e: write protect ICHx NVM to prev..., Allan, Bruce W, (Tue Sep 30, 11:47 am)
RE: [RFC PATCH 11/12] e1000e: write protect ICHx NVM to prev..., Jiri Kosina, (Wed Oct 1, 9:29 am)
RE: [RFC PATCH 11/12] e1000e: write protect ICHx NVM to prev..., Allan, Bruce W, (Wed Oct 1, 3:13 pm)
[RFC PATCH 09/12] e1000e: dump eeprom to dmesg for ich8/9, Jesse Brandeburg, (Mon Sep 29, 11:20 pm)
[RFC PATCH 08/12] e1000e: allow bad checksum, Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
Re: [RFC PATCH 08/12] e1000e: allow bad checksum, Jiri Kosina, (Tue Sep 30, 4:38 am)
[RFC PATCH 10/12] e1000e: Use set_memory_ro()/set_memory_rw(..., Jesse Brandeburg, (Mon Sep 29, 11:20 pm)
[RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
Re: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Jiri Kosina, (Thu Oct 2, 10:28 am)
Re: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Olaf Kirch, (Thu Oct 2, 11:03 am)
[PATCH] e1000e: prevent concurrent access to NVRAM, Thomas Gleixner, (Thu Oct 2, 7:42 pm)
Re: [PATCH] e1000e: prevent concurrent access to NVRAM, Jesse Brandeburg, (Thu Oct 2, 8:19 pm)
Re: [PATCH] e1000e: prevent concurrent access to NVRAM, Thomas Gleixner, (Thu Oct 2, 8:28 pm)
RE: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Brandeburg, Jesse, (Thu Oct 2, 12:27 pm)
RE: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Thomas Gleixner, (Thu Oct 2, 2:02 pm)
Re: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Olaf Kirch, (Thu Oct 2, 1:33 pm)
Re: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Thomas Gleixner, (Thu Oct 2, 2:58 pm)
Re: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Olaf Kirch, (Thu Oct 2, 3:07 pm)
Re: [RFC PATCH 07/12] e1000e: debug contention on NVM SWFLAG, Olaf Kirch, (Thu Oct 2, 3:08 pm)
[RFC PATCH 06/12] e1000e: drop stats lock, Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
[RFC PATCH 05/12] e1000e: fix lockdep issues, Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
[RFC PATCH 04/12] e1000e: do not ever sleep in interrupt con..., Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
[RFC PATCH 03/12] e1000e: reset swflag after resetting hardw..., Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
[RFC PATCH 01/12] x86: export set_memory_ro and set_memory_rw, Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
Re: [RFC PATCH 01/12] x86: export set_memory_ro and set_memo..., Ingo Molnar, (Tue Sep 30, 3:07 am)
[RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jesse Brandeburg, (Mon Sep 29, 11:19 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jesse Barnes, (Thu Oct 2, 6:23 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, David Miller, (Tue Oct 7, 7:19 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, David Miller, (Fri Oct 3, 4:46 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jesse Barnes, (Fri Oct 3, 5:29 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jiri Kosina, (Fri Oct 3, 5:45 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jesse Brandeburg, (Fri Oct 3, 7:28 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jiri Kosina, (Sat Oct 4, 6:21 am)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Thomas Gleixner, (Sat Oct 4, 7:02 am)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jesse Brandeburg, (Sat Oct 4, 9:24 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Thomas Gleixner, (Sun Oct 5, 4:51 am)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Arjan van de Ven, (Sun Oct 5, 11:05 am)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Thomas Gleixner, (Sun Oct 5, 11:55 am)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Arjan van de Ven, (Sun Oct 5, 12:02 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Thomas Gleixner, (Sun Oct 5, 12:16 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Arjan van de Ven, (Sun Oct 5, 1:01 pm)
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:, Jesse Brandeburg, (Fri Oct 3, 7:30 pm)