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Bug#600064: linux-image-2.6.32-5-xen-amd64: machine reboots during dom0 bootup if Intel TXT enabled

On Thu, Oct 14, 2010 at 4:58 PM, Ian Campbell <ijc@hellion.org.uk> wrote:
> On Wed, 2010-10-13 at 12:35 +0200, Linus van Geuns wrote:
>> Package: linux-2.6
>> Version: 2.6.32-23
>> Severity: important
>> If Intel TXT is enabled in BIOS settings, machine reboots during dom0 kernel startup when used as dom0 with xen-hypervisor-4.0-amd64.
>> Displays message "Waiting for /dev to be fully populated..", waits some seconds and just reboots.
>> After disabling Intel TXT, I have not encountered any unexpected reboots so far.. :)
> Does Debian even support TXT boot in the first place?

Im talking about the BIOS option "Intel TXT", not about a real
"trusted" boot environment starting Debian/Xen.

> Does this also happen on bare metal, with either the -xen-amd64 or plain
> -amd64 kernels?


> If you add "noreboot" to your hypervisor command line do you get the
> opportunity to observe any error messages which you are missing due to
> the reboot?

There is one additional "error" message after the message "Waiting for
/Dev to be fully polpulated...":
"Driver 'pcspkr' is already registered, aborting..". ;-)

Unable to locate IOAPIC for GSI 2 and 9  is reported as the first
messages from dom0 kernel, but those messages are also present when
booting w/o TXT = Enabled setting.

When I remove the 'quiet' kernel parameter, the mast messages seen are
sometimes from DRM and from USB otherwise.

Regards, Linus (no, not that one :-))

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