On 5/31/19 1:21 AM, Peter Zijlstra wrote: > And I'll stand by my earlier conviction that any architecture that has a > native u64 (be it a 64bit arch or a 32bit with double-width > instructions) but has an ABI that allows u32 alignment on them is daft. Why ? For 64-bit data on 32-bit systems, hardware doesn't claim to provide any single-copy atomicity for such data and software doesn't expect either.
