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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 14:46:03 -0800	[thread overview]
Message-ID: <4B19912B.8050009@zytor.com> (raw)
In-Reply-To: <20091204223913.GG32314@elf.ucw.cz>

On 12/04/2009 02:39 PM, Pavel Machek wrote:
> 
> Having "security" technology that silently fails with funny bootloader
> is pretty bad, I'd say.
> 

Yes, but this wouldn't be a silent failure -- such a boot loader
wouldn't be able to boot tboot itself either, nor would be able to boot
32-bit kernels (which, in fact, not all boot loaders can); the tboot
boot process in fact in many ways treats tboot itself as a 32-bit
primary kernel, with the Linux kernel as a secondary kernel.

So, this particular failure would not be silent by any means.

	-hpa

  reply	other threads:[~2009-12-04 22:46 UTC|newest]

Thread overview: 32+ 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
2009-12-04 22:39               ` Pavel Machek
2009-12-04 22:46                 ` H. Peter Anvin [this message]
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
2010-03-10  6:36       ` [PATCH v3] " Shane Wang
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
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 16:52   ` Cihula, Joseph
2009-12-04 22:20     ` Pavel Machek
2009-12-04 11:05 ` Andi Kleen

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