[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] c/s 21886 change to DMAR table hiding
On 10/29/10 08:06, Cihula, Joseph wrote: Keir, In c/s 21886, you changed the method by which the DMAR ACPI table was hidden from dom0. Why was this change needed? - dmar->header.signature[0] = '\0'; + dmar->header.signature[0] = 'X'; + dmar->header.checksum -= 'X'-'D'; I ask because tboot was using the original method to unhide/re-hide the table during S3 (because the TXT launch on S3 resume requires a valid DMAR table) and this has broken S3 w/ TXT. Please see discussion under http://lists.xensource.com/archives/html/xen-devel/2010-07/msg01517.html Problem was crash kernel not comig up with the original DMAR hide. Juergen -- Juergen Gross Principal Developer Operating Systems TSP ES&S SWE OS6 Telephone: +49 (0) 89 3222 2967 Fujitsu Technology Solutions e-mail: juergen.gross@xxxxxxxxxxxxxx Domagkstr. 28 Internet: ts.fujitsu.com D-80807 Muenchen Company details: ts.fujitsu.com/imprint.html _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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