On Wed, 2012-10-10 at 18:44 +0100, Matthew Garrett wrote: > On Wed, Oct 10, 2012 at 11:23:01AM +0800, Lv Zheng wrote: > > Microsoft Debug Port Table (DBGP or DBG2) is used by the Windows SoC > > platforms to describe their debugging facilities. > > DBGP: http://msdn.microsoft.com/en-us/windows/hardware/hh134821 > > DBG2: http://msdn.microsoft.com/en-us/library/windows/hardware/hh673515 > > The license for these specifications only covers BIOS implementations, > not OS implementations. Has this had appropriate legal review? > I agree with Matthew. There are potential legal issues with using DBGP/DBGP2 tables in Linux. I had added support for SPCR and DBGP tables many years ago (in early 2.6 kernel timeframe) before Microsoft added this new license. I pulled the code out (in 2.6.14, I think) after Microsoft added the new license to these tables. I agree with Matthew's interpretation that the license is clear only about BIOS vendors being allowed to use these tables. PCDP table in DIG64 spec was introduced to get around the legal issues with using SPCR and DBGP in Linux. License for DBGP/DBGP2 needs some legal review before this patch can go into Linux. -- Khalid -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
