On 8/9/20 9:10 PM, Stephen Rothwell wrote:> Hi all,
>
on i386:
Lots (63) of left shift warnings: {not all are shown here}
CC drivers/vdpa/mlx5/net/mlx5_vnet.o
In file included from ../include/linux/bits.h:6:0,
from ../include/linux/bitops.h:5,
from ../include/linux/kernel.h:12,
from ../include/linux/vdpa.h:5,
from ../drivers/vdpa/mlx5/net/mlx5_vnet.c:4:
../drivers/vdpa/mlx5/net/mlx5_vnet.c: In function 'print_features':
../include/vdso/bits.h:7:26: warning: left shift count >= width of type
[-Wshift-count-overflow]
#define BIT(nr) (UL(1) << (nr))
^
../drivers/vdpa/mlx5/net/mlx5_vnet.c:27:60: note: in expansion of macro
'BIT'
BIT(VIRTIO_NET_F_MQ) | BIT(VIRTIO_NET_F_CTRL_MAC_ADDR) |
BIT(VIRTIO_NET_F_HASH_REPORT) | \
^~~
../drivers/vdpa/mlx5/net/mlx5_vnet.c:186:18: note: in expansion of macro
'VALID_FEATURES_MASK'
if (features & ~VALID_FEATURES_MASK)
^~~~~~~~~~~~~~~~~~~
../include/vdso/bits.h:7:26: warning: left shift count >= width of type
[-Wshift-count-overflow]
#define BIT(nr) (UL(1) << (nr))
^
../drivers/vdpa/mlx5/net/mlx5_vnet.c:28:3: note: in expansion of macro
'BIT'
BIT(VIRTIO_NET_F_RSS) | BIT(VIRTIO_NET_F_RSC_EXT) | BIT(VIRTIO_NET_F_STANDBY)
| \
^~~
../drivers/vdpa/mlx5/net/mlx5_vnet.c:186:18: note: in expansion of macro
'VALID_FEATURES_MASK'
if (features & ~VALID_FEATURES_MASK)
^~~~~~~~~~~~~~~~~~~
../include/vdso/bits.h:7:26: warning: left shift count >= width of type
[-Wshift-count-overflow]
#define BIT(nr) (UL(1) << (nr))
^
../drivers/vdpa/mlx5/net/mlx5_vnet.c:28:27: note: in expansion of macro
'BIT'
BIT(VIRTIO_NET_F_RSS) | BIT(VIRTIO_NET_F_RSC_EXT) | BIT(VIRTIO_NET_F_STANDBY)
| \
^~~
../drivers/vdpa/mlx5/net/mlx5_vnet.c:186:18: note: in expansion of macro
'VALID_FEATURES_MASK'
if (features & ~VALID_FEATURES_MASK)
^~~~~~~~~~~~~~~~~~~
../include/vdso/bits.h:7:26: warning: left shift count >= width of type
[-Wshift-count-overflow]
#define BIT(nr) (UL(1) << (nr))
^
../drivers/vdpa/mlx5/net/mlx5_vnet.c:28:55: note: in expansion of macro
'BIT'
BIT(VIRTIO_NET_F_RSS) | BIT(VIRTIO_NET_F_RSC_EXT) | BIT(VIRTIO_NET_F_STANDBY)
| \
^~~
../drivers/vdpa/mlx5/net/mlx5_vnet.c:186:18: note: in expansion of macro
'VALID_FEATURES_MASK'
if (features & ~VALID_FEATURES_MASK)
^~~~~~~~~~~~~~~~~~~
../include/vdso/bits.h:7:26: warning: left shift count >= width of type
[-Wshift-count-overflow]
#define BIT(nr) (UL(1) << (nr))
^
../drivers/vdpa/mlx5/net/mlx5_vnet.c:29:3: note: in expansion of macro
'BIT'
BIT(VIRTIO_NET_F_SPEED_DUPLEX) | BIT(VIRTIO_F_NOTIFY_ON_EMPTY) |
\
^~~
../drivers/vdpa/mlx5/net/mlx5_vnet.c:186:18: note: in expansion of macro
'VALID_FEATURES_MASK'
if (features & ~VALID_FEATURES_MASK)
^~~~~~~~~~~~~~~~~~~
../include/vdso/bits.h:7:26: warning: left shift count >= width of type
[-Wshift-count-overflow]
#define BIT(nr) (UL(1) << (nr))
^
../drivers/vdpa/mlx5/net/mlx5_vnet.c:30:30: note: in expansion of macro
'BIT'
BIT(VIRTIO_F_ANY_LAYOUT) | BIT(VIRTIO_F_VERSION_1) |
BIT(VIRTIO_F_ACCESS_PLATFORM) | \
^~~
../drivers/vdpa/mlx5/net/mlx5_vnet.c:186:18: note: in expansion of macro
'VALID_FEATURES_MASK'
if (features & ~VALID_FEATURES_MASK)
^~~~~~~~~~~~~~~~~~~
--
~Randy
Reported-by: Randy Dunlap <rdunlap at infradead.org>