[lkml]   [2008]   [Aug]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 1/4] integrity: TPM internel kernel interface
On Thu, Aug 14, 2008 at 9:12 PM, Pavel Machek <> wrote:
> Hi!
>> > And what happens when the chip simply goes away due to a hotplug action?
>> > Or not even the actual chip goes away but just the chip driver and you
>> > now dereference freed memory?
>> Being a TCG/TPM person, I can only address the first question. The
>> intent is that the TPM is soldered to the planar/motherboard (the TCG
>> uses the phrase "bound to the platform"). I can't imagine
>> any manufacturer designing a pluggable TPM. It would subvert PCR
> Only 2 TPMs I've seen were on pluggable modules... which was fortunate
> because they slowed down boot by 5+ minutes, and broke it completely
> in other cases. Nickname 'kurvitko' (aka useless trash that breaks
> stuff). They are currently lying under my table, disconnected.
> (OTOH they were not on PCI, but on some low-count pin header).
> Pavel
Remember even soldered on stuff can fail. How linux handles the
death of the TPM module needs to be covered.

Peter Dolding

 \ /
  Last update: 2008-08-15 12:41    [W:0.060 / U:0.232 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site