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authorNathan Chancellor <natechancellor@gmail.com>2020-08-21 15:50:19 -0700
committerMichael S. Tsirkin <mst@redhat.com>2020-08-26 08:13:59 -0400
commitcbb523594eb718944b726ba52bb43a1d66188a17 (patch)
tree03ea0216ddef4edf2f28e6c7d929b6069b519e59 /drivers/vdpa
parenteb07d8f5ff32a0151967a56479fc3bd1003c303f (diff)
vdpa/mlx5: Avoid warnings about shifts on 32-bit platforms
Clang warns several times when building for 32-bit ARM along the lines of: drivers/vdpa/mlx5/net/mlx5_vnet.c:1462:31: warning: shift count >= width of type [-Wshift-count-overflow] ndev->mvdev.mlx_features |= BIT(VIRTIO_F_VERSION_1); ^~~~~~~~~~~~~~~~~~~~~~~ This is related to the BIT macro, which uses an unsigned long literal, which is 32-bit on ARM so having a shift equal to or larger than 32 will cause this warning, such as the above, where VIRTIO_F_VERSION_1 is 32. To avoid this, use BIT_ULL, which will be an unsigned long long. This matches the size of the features field throughout this driver, which is u64 so there should be no functional change. Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices") Link: https://github.com/ClangBuiltLinux/linux/issues/1140 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Link: https://lore.kernel.org/r/20200821225018.940798-1-natechancellor@gmail.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Acked-by: Eli Cohen <elic@nvidia.com>
Diffstat (limited to 'drivers/vdpa')
-rw-r--r--drivers/vdpa/mlx5/net/mlx5_vnet.c50
1 files changed, 25 insertions, 25 deletions
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 9df69d5efe8c..70676a6d1691 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -16,19 +16,19 @@
#define to_mvdev(__vdev) container_of((__vdev), struct mlx5_vdpa_dev, vdev)
#define VALID_FEATURES_MASK \
- (BIT(VIRTIO_NET_F_CSUM) | BIT(VIRTIO_NET_F_GUEST_CSUM) | \
- BIT(VIRTIO_NET_F_CTRL_GUEST_OFFLOADS) | BIT(VIRTIO_NET_F_MTU) | BIT(VIRTIO_NET_F_MAC) | \
- BIT(VIRTIO_NET_F_GUEST_TSO4) | BIT(VIRTIO_NET_F_GUEST_TSO6) | \
- BIT(VIRTIO_NET_F_GUEST_ECN) | BIT(VIRTIO_NET_F_GUEST_UFO) | BIT(VIRTIO_NET_F_HOST_TSO4) | \
- BIT(VIRTIO_NET_F_HOST_TSO6) | BIT(VIRTIO_NET_F_HOST_ECN) | BIT(VIRTIO_NET_F_HOST_UFO) | \
- BIT(VIRTIO_NET_F_MRG_RXBUF) | BIT(VIRTIO_NET_F_STATUS) | BIT(VIRTIO_NET_F_CTRL_VQ) | \
- BIT(VIRTIO_NET_F_CTRL_RX) | BIT(VIRTIO_NET_F_CTRL_VLAN) | \
- BIT(VIRTIO_NET_F_CTRL_RX_EXTRA) | BIT(VIRTIO_NET_F_GUEST_ANNOUNCE) | \
- BIT(VIRTIO_NET_F_MQ) | BIT(VIRTIO_NET_F_CTRL_MAC_ADDR) | BIT(VIRTIO_NET_F_HASH_REPORT) | \
- BIT(VIRTIO_NET_F_RSS) | BIT(VIRTIO_NET_F_RSC_EXT) | BIT(VIRTIO_NET_F_STANDBY) | \
- BIT(VIRTIO_NET_F_SPEED_DUPLEX) | BIT(VIRTIO_F_NOTIFY_ON_EMPTY) | \
- BIT(VIRTIO_F_ANY_LAYOUT) | BIT(VIRTIO_F_VERSION_1) | BIT(VIRTIO_F_ACCESS_PLATFORM) | \
- BIT(VIRTIO_F_RING_PACKED) | BIT(VIRTIO_F_ORDER_PLATFORM) | BIT(VIRTIO_F_SR_IOV))
+ (BIT_ULL(VIRTIO_NET_F_CSUM) | BIT_ULL(VIRTIO_NET_F_GUEST_CSUM) | \
+ BIT_ULL(VIRTIO_NET_F_CTRL_GUEST_OFFLOADS) | BIT_ULL(VIRTIO_NET_F_MTU) | BIT_ULL(VIRTIO_NET_F_MAC) | \
+ BIT_ULL(VIRTIO_NET_F_GUEST_TSO4) | BIT_ULL(VIRTIO_NET_F_GUEST_TSO6) | \
+ BIT_ULL(VIRTIO_NET_F_GUEST_ECN) | BIT_ULL(VIRTIO_NET_F_GUEST_UFO) | BIT_ULL(VIRTIO_NET_F_HOST_TSO4) | \
+ BIT_ULL(VIRTIO_NET_F_HOST_TSO6) | BIT_ULL(VIRTIO_NET_F_HOST_ECN) | BIT_ULL(VIRTIO_NET_F_HOST_UFO) | \
+ BIT_ULL(VIRTIO_NET_F_MRG_RXBUF) | BIT_ULL(VIRTIO_NET_F_STATUS) | BIT_ULL(VIRTIO_NET_F_CTRL_VQ) | \
+ BIT_ULL(VIRTIO_NET_F_CTRL_RX) | BIT_ULL(VIRTIO_NET_F_CTRL_VLAN) | \
+ BIT_ULL(VIRTIO_NET_F_CTRL_RX_EXTRA) | BIT_ULL(VIRTIO_NET_F_GUEST_ANNOUNCE) | \
+ BIT_ULL(VIRTIO_NET_F_MQ) | BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR) | BIT_ULL(VIRTIO_NET_F_HASH_REPORT) | \
+ BIT_ULL(VIRTIO_NET_F_RSS) | BIT_ULL(VIRTIO_NET_F_RSC_EXT) | BIT_ULL(VIRTIO_NET_F_STANDBY) | \
+ BIT_ULL(VIRTIO_NET_F_SPEED_DUPLEX) | BIT_ULL(VIRTIO_F_NOTIFY_ON_EMPTY) | \
+ BIT_ULL(VIRTIO_F_ANY_LAYOUT) | BIT_ULL(VIRTIO_F_VERSION_1) | BIT_ULL(VIRTIO_F_ACCESS_PLATFORM) | \
+ BIT_ULL(VIRTIO_F_RING_PACKED) | BIT_ULL(VIRTIO_F_ORDER_PLATFORM) | BIT_ULL(VIRTIO_F_SR_IOV))
#define VALID_STATUS_MASK \
(VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_DRIVER_OK | \
@@ -149,7 +149,7 @@ static bool mlx5_vdpa_debug;
#define MLX5_LOG_VIO_FLAG(_feature) \
do { \
- if (features & BIT(_feature)) \
+ if (features & BIT_ULL(_feature)) \
mlx5_vdpa_info(mvdev, "%s\n", #_feature); \
} while (0)
@@ -750,10 +750,10 @@ static bool vq_is_tx(u16 idx)
static u16 get_features_12_3(u64 features)
{
- return (!!(features & BIT(VIRTIO_NET_F_HOST_TSO4)) << 9) |
- (!!(features & BIT(VIRTIO_NET_F_HOST_TSO6)) << 8) |
- (!!(features & BIT(VIRTIO_NET_F_CSUM)) << 7) |
- (!!(features & BIT(VIRTIO_NET_F_GUEST_CSUM)) << 6);
+ return (!!(features & BIT_ULL(VIRTIO_NET_F_HOST_TSO4)) << 9) |
+ (!!(features & BIT_ULL(VIRTIO_NET_F_HOST_TSO6)) << 8) |
+ (!!(features & BIT_ULL(VIRTIO_NET_F_CSUM)) << 7) |
+ (!!(features & BIT_ULL(VIRTIO_NET_F_GUEST_CSUM)) << 6);
}
static int create_virtqueue(struct mlx5_vdpa_net *ndev, struct mlx5_vdpa_virtqueue *mvq)
@@ -1439,13 +1439,13 @@ static u64 mlx_to_vritio_features(u16 dev_features)
u64 result = 0;
if (dev_features & MLX5_VIRTIO_NET_F_GUEST_CSUM)
- result |= BIT(VIRTIO_NET_F_GUEST_CSUM);
+ result |= BIT_ULL(VIRTIO_NET_F_GUEST_CSUM);
if (dev_features & MLX5_VIRTIO_NET_F_CSUM)
- result |= BIT(VIRTIO_NET_F_CSUM);
+ result |= BIT_ULL(VIRTIO_NET_F_CSUM);
if (dev_features & MLX5_VIRTIO_NET_F_HOST_TSO6)
- result |= BIT(VIRTIO_NET_F_HOST_TSO6);
+ result |= BIT_ULL(VIRTIO_NET_F_HOST_TSO6);
if (dev_features & MLX5_VIRTIO_NET_F_HOST_TSO4)
- result |= BIT(VIRTIO_NET_F_HOST_TSO4);
+ result |= BIT_ULL(VIRTIO_NET_F_HOST_TSO4);
return result;
}
@@ -1459,15 +1459,15 @@ static u64 mlx5_vdpa_get_features(struct vdpa_device *vdev)
dev_features = MLX5_CAP_DEV_VDPA_EMULATION(mvdev->mdev, device_features_bits_mask);
ndev->mvdev.mlx_features = mlx_to_vritio_features(dev_features);
if (MLX5_CAP_DEV_VDPA_EMULATION(mvdev->mdev, virtio_version_1_0))
- ndev->mvdev.mlx_features |= BIT(VIRTIO_F_VERSION_1);
- ndev->mvdev.mlx_features |= BIT(VIRTIO_F_ACCESS_PLATFORM);
+ ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_F_VERSION_1);
+ ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_F_ACCESS_PLATFORM);
print_features(mvdev, ndev->mvdev.mlx_features, false);
return ndev->mvdev.mlx_features;
}
static int verify_min_features(struct mlx5_vdpa_dev *mvdev, u64 features)
{
- if (!(features & BIT(VIRTIO_F_ACCESS_PLATFORM)))
+ if (!(features & BIT_ULL(VIRTIO_F_ACCESS_PLATFORM)))
return -EOPNOTSUPP;
return 0;