Re: [tboot-devel] GETSEC[SENTER] fail on HP dc7800

[Ross P. <Ros...@ci...>]

Hmm, nothing jumps out at me as to what is not correct. I guess that is a Intel Q35 (or similar) desktop system you have. The DHRD tables look like the ones I would expect from what I have seen with other Intel chipsets. The RMRR values also look reasonable for the iGfx and USB devices. The last time someone reported a similar problem on one of the lists it turned out their BIOS was missing the DHRD with the INCLUDE_ALL flag set but this looks OK in your case. Maybe someone else on the list might see something amiss with the DMAR.

Thanks
Ross

-----Original Message-----
From: Hal Finney [mailto:hal...@gm...] 
Sent: Wednesday, July 29, 2009 12:36 PM
To: Ross Philipson
Cc: tbo...@li...
Subject: Re: [tboot-devel] GETSEC[SENTER] fail on HP dc7800

Hi Ross, thanks very much for that. I have attached the output from my dc7800.

Hal

On Wed, Jul 29, 2009 at 7:40 AM, Ross
Philipson<Ros...@ci...> wrote:
> Hal,
>
> I attached a little utility I wrote to dump the DMAR tables from ACPI. If you run it and post the output it might show what TXT thinks is wrong with DMAR. You will have to build and run it on linux.
>
> Thanks
> Ross
>
> -----Original Message-----
> From: Hal Finney [mailto:hal...@gm...]
> Sent: Tuesday, July 28, 2009 7:33 PM
> To: tbo...@li...
> Subject: [tboot-devel] GETSEC[SENTER] fail on HP dc7800
>
> I haven't run tboot in a while, but I'm trying it on my HP dc7800 and finding it hangs in GETSEC[SENTER]. This is even true with old versions of tboot that used to work. My system has no USB ports plugged in, and no hardware changes.
>
> The one change is I recently updated my BIOS. I suspect this has to be the cause. One nice thing about the new BIOS is that the tboot hang actually reboots the machine with the ERRORCODE register intact. Its value is c00020a1. This is progress code 0ah, error code 1000,
> meaning: "device scope of VT-d DMAR ACPI table is invalid". Not clear what this means.
>
> My log is attached, including the hang and the relaunch of tboot. This is version 20090330 of tboot. Thanks very much -
>
> Hal Finney
>