I'd also like to know this - including all the ACMs in a distribution seems... hackish.
This is most likely vendor-specific. Older machines that I tried didn't include it (old Thinkpads for example), the newest one that didn't include it that I've seen was of ~2014 vintage (pre-EFI methinks]. Servers should include it (always?), but if they don't then the vendor doesn't care, and then it's doubtul how well it will work anyway. Jan > On 20 Sep 2016, at 18:37, Daniel Mueller <danielmul...@vmware.com> wrote: > > Hi, > > Looking at the tboot source code it seems to support finding and installing a > user-provided AC module. Is this feature actually used with recent systems or > do all systems ship with an ACM installed? > > I found the following line in the TXT development guide > <http://www.intel.com/content/www/us/en/software-developers/intel-txt-software-development-guide.html>: > > Since the TXT architecture requires that BIOS provide at least one BIOS ACM, > NumAcms must always be greater than 0. > So it appears an ACM must be installed. Are there any known systems violating > this constraint? > > Thanks, > Daniel > > ------------------------------------------------------------------------------ > _______________________________________________ > tboot-devel mailing list > tboot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/tboot-devel
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