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From: "H. Peter Anvin" <hpa@zytor.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: "Cihula, Joseph" <joseph.cihula@intel.com>,
	"Wang, Shane" <shane.wang@intel.com>,
	"Rafael J. Wysocki" <rjw@sisk.pl>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@elte.hu>,
	"arjan@linux.intel.com" <arjan@linux.intel.com>,
	"andi@firstfloor.org" <andi@firstfloor.org>,
	"chrisw@sous-sol.org" <chrisw@sous-sol.org>,
	"jmorris@namei.org" <jmorris@namei.org>,
	"jbeulich@novell.com" <jbeulich@novell.com>,
	"peterm@redhat.com" <peterm@redhat.com>
Subject: Re: [PATCH] intel_txt: add s3 userspace memory integrity verification
Date: Fri, 04 Dec 2009 14:24:24 -0800	[thread overview]
Message-ID: <4B198C18.7040500@zytor.com> (raw)
In-Reply-To: <20091204221553.GD32314@elf.ucw.cz>

On 12/04/2009 02:15 PM, Pavel Machek wrote:
>>>
>>> Are  you sure x86-64 kernel & modules is always below 4GB? I don't
>>> think so.

The x86-64 kernel is run where it is loaded by the boot loader.  For
most boot loaders, that will mean < 4 GB.  This is not the case for
modules, and they cannot and should not rely on modules inside
restricted zone.

This effectively becomes a constraint on whatever boot loader is used to
load the kernel for it to be compatible with tboot.

	-hpa

  reply	other threads:[~2009-12-04 22:25 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-01  8:52 [PATCH] intel_txt: fix the build errors of intel_txt patch on non-X86 platforms (resend) Shane Wang
2009-09-27  9:07 ` [PATCH] intel_txt: add s3 userspace memory integrity verification Shane Wang
2009-09-29  2:27   ` [PATCH] intel_txt: fix the buggy timeout warning logic in tboot Shane Wang
2009-10-04 18:58   ` [PATCH] intel_txt: add s3 userspace memory integrity verification Pavel Machek
2009-10-04 23:26     ` Andi Kleen
2009-10-15  7:57     ` Wang, Shane
2009-12-04  9:07     ` Wang, Shane
2009-12-04  8:19       ` Pavel Machek
2009-12-04 16:46         ` Cihula, Joseph
2009-12-04 17:13           ` Andi Kleen
2009-12-04 17:41             ` Cihula, Joseph
2009-12-04 20:09               ` Andi Kleen
2009-12-04 20:17                 ` Cihula, Joseph
2009-12-04 20:31                   ` Andi Kleen
2009-12-04 21:27                   ` H. Peter Anvin
2009-12-04 17:53             ` H. Peter Anvin
2009-12-04 20:10               ` Andi Kleen
2009-12-04 22:25               ` Pavel Machek
2009-12-04 22:15           ` Pavel Machek
2009-12-04 22:24             ` H. Peter Anvin [this message]
2009-12-04 22:39               ` Pavel Machek
2009-12-04 22:46                 ` H. Peter Anvin
2010-03-09  8:52     ` [PATCH v2] intel_txt: add support for S3 memory integrity protection within Intel(R) TXT launched kernel Wang, Shane
2010-03-09  9:06       ` Pavel Machek
2010-03-09  9:06       ` Pavel Machek
2010-03-10  6:36       ` [PATCH v3] " Shane Wang
2010-03-10  6:36         ` Shane Wang
2010-03-10 20:31         ` Rafael J. Wysocki
2010-03-10 20:31         ` Rafael J. Wysocki
2010-03-19 21:18         ` [tip:x86/txt] x86, tboot: Add support for S3 memory integrity protection tip-bot for Shane Wang
2010-03-09  8:52     ` [PATCH v2] intel_txt: add support for S3 memory integrity protection within Intel(R) TXT launched kernel Wang, Shane
  -- strict thread matches above, loose matches on Subject: below --
2009-12-04  9:12 [PATCH] intel_txt: add s3 userspace memory integrity verification Shane Wang
2009-12-04  8:29 ` Pavel Machek
2009-12-04  8:29 ` Pavel Machek
2009-12-04 16:52   ` Cihula, Joseph
2009-12-04 22:20     ` Pavel Machek
2009-12-04 22:20     ` Pavel Machek
2009-12-04 16:52   ` Cihula, Joseph
2009-12-04 11:05 ` Andi Kleen
2009-12-04 11:05 ` Andi Kleen

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