On Wed, Nov 3, 2021 at 1:34 AM Thomas Munro <thomas.mu...@gmail.com> wrote: > Andres mentioned in passing that he'd defined > PG_HAVE_8BYTE_SINGLE_COPY_ATOMICITY only on Itanium, PPC and x86 but > not ARM. > > I took a look at https://developer.arm.com/documentation/ddi0487/gb/ > under "B2.2.1 Requirements for single-copy atomicity" and it seemed > like we should turn this on for __aarch64__. It goes back to the > original ARMv8-A so should cover all 64 bit ARM systems.
That should be very good because ARM gains popularity and the effect of atomic read is significant ------ Regards, Alexander Korotkov