On Sun, Nov 10, 2024 at 04:09:11PM +0100, Zhu Yanjun wrote: >> + >> +/* >> + * Use the high bit to mark if we used swiotlb for one or more ranges. >> + */ >> +#define DMA_IOVA_USE_SWIOTLB (1ULL << 63) > > A trivial problem. > In the above macro, using BIT_ULL(63) is better? No, and can people please stop suggesting it? That macro is so fucking pointless that it's revolting,