On Mon, 27 Nov 2023 16:59:13 +0100 Christoph Hellwig <hch@xxxxxx> wrote: > On Thu, Nov 23, 2023 at 11:16:08AM +0100, Petr Tesařík wrote: > > > To sum it up, there are two types of alignment: > > > > > > 1. specified by a device's min_align_mask; this says how many low > > > bits of a buffer's physical address must be preserved, > > > > > > 2. specified by allocation size and/or the alignment parameter; > > > this says how many low bits in the first IO TLB slot's physical > > > address must be zero. > > Both are correct. Great! Thank you for confirmation. Unfortunately, that's not quite how the code works now. I'm on it to fix things. Petr T
