On 7/30/20 12:50 AM, Herbert Xu wrote: > On Thu, Jul 30, 2020 at 10:47:16AM +0300, Andy Shevchenko wrote: >> We may ask Synopsys folks to look at this as well. >> Vineet, any ideas if we may unify ATOMIC64_INIT() across the architectures? > I don't think there is any technical difficulty. The custom > atomic64_t simply adds an alignment requirement so the initialisor > remains the same.
Exactly so. FWIW the alignment requirement is because ARC ABI allows 64-bit data to be 32-bit aligned provided hardware deals fine with 4 byte aligned for the non-atomic double-load/store LDD/STD instructions. The 64-bit alignement however is required for atomic double load/store LLOCKD/SCONDD instructions hence the definition of ARC atomic64_t -Vineet _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
