> -----Original Message----- > From: Mark Rutland [mailto:[email protected]] > Sent: Tuesday, January 24, 2017 2:15 PM > To: Shameerali Kolothum Thodi > Cc: [email protected]; [email protected]; linux-arm- > [email protected]; Linuxarm; [email protected]; > [email protected]; John Garry; Guohanjun (Hanjun Guo); > [email protected] > Subject: Re: [RFC 2/4] irqchip, gicv3-its:Workaround for HiSilicon > erratum 161010801 sounds like this will have severe implications for virtualization. > > > Also these platforms doesn't have a proper IIDR > > register to use the existing IIDR based quirk mechanism. > > What exactly is wrong with the IIDR on these platforms? That sounds > like > an erratum as of itself. > > What precise value do reads of the IIDR return? Or do reads result in > other erroneous behaviour?
As far as I know, there is no erroneous behavior while reading. But the IIDR JEP106 identity code is 0 on these platforms, hence not much of use. This will be corrected in next revision of hw. Thanks, Shameer
