On Thu, 3 Feb 2022 15:53:51 -0800 Jakub Kicinski wrote: > On Mon, 13 Dec 2021 02:14:05 -0500 Tianyu Lan wrote: > > @@ -2078,6 +2079,7 @@ struct hv_device *vmbus_device_create(const guid_t *type, > > return child_device_obj; > > } > > > > +static u64 vmbus_dma_mask = DMA_BIT_MASK(64); > > This breaks the x86 clang allmodconfig build as I presume those > involved know by now: > > ../drivers/hv/vmbus_drv.c:2082:29: error: shift count >= width of type [-Werror,-Wshift-count-overflow] > static u64 vmbus_dma_mask = DMA_BIT_MASK(64); > ^~~~~~~~~~~~~~~~ > ../include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' > #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) > ^ ~~~ > 1 error generated. Looks like a compiler issue actually, found the discussion now: https://lore.kernel.org/llvm/202112181827.o3X7GmHz-lkp@xxxxxxxxx/
