> From: Jason Gunthorpe <jgg@xxxxxxxx> > Sent: Wednesday, August 9, 2023 2:40 AM > > On Fri, Aug 04, 2023 at 03:51:30AM +0000, Tian, Kevin wrote: > > > From: Baolu Lu <baolu.lu@xxxxxxxxxxxxxxx> > > > Sent: Friday, August 4, 2023 10:59 AM > > > > > > On 2023/8/3 15:54, Tian, Kevin wrote: > > > >> From: Lu Baolu<baolu.lu@xxxxxxxxxxxxxxx> > > > >> Sent: Thursday, July 27, 2023 1:48 PM > > > >> > > > >> struct iommu_fault { > > > >> __u32 type; > > > >> - __u32 padding; > > > > this padding should be kept. > > > > > > > > > > To keep above 64-bit aligned, right? > > > > > > > yes > > If it is not uapi we should not explicitly document padding (and __u32 > should be u32). The compiler will add it if it is necessary. > > If the compiler isn't right for some reason then something else has > gone wrong. > I thought this will be used as uAPI later. I'm fine to leave it be and add the padding when the uAPI is introduced.