linux-kernel - Re: linux-next: Tree for Aug 10 (drivers/vdpa/mlx5/net)

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Date:   Mon, 10 Aug 2020 09:31:21 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Eli Cohen <eli@...lanox.com>,
        virtualization@...ts.linux-foundation.org
Subject: Re: linux-next: Tree for Aug 10 (drivers/vdpa/mlx5/net)

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@...radead.org>