Hi, There is new compilation error (for a second week for drm-tip[1] kernel): CC [M] drivers/hv/vmbus_drv.o 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. I understand this looks like possible GCC (11.2.1) bug, but still it prevents building kernel with CONFIG_HYPERV. Thanks, [1] git://anongit.freedesktop.org/drm-tip