• Arnd Bergmann's avatar
    vmxnet3: prevent building with 64K pages · fbdf0e28
    Arnd Bergmann authored
    I got a warning about broken code on ARM64 with 64K pages:
    drivers/net/vmxnet3/vmxnet3_drv.c: In function 'vmxnet3_rq_init':
    drivers/net/vmxnet3/vmxnet3_drv.c:1679:29: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
        rq->buf_info[0][i].len = PAGE_SIZE;
    'len' here is a 16-bit integer, so this clearly won't work. I don't think
    this driver is used much on anything other than x86, so there is no need
    to fix this properly and we can work around it with a Kconfig dependency
    to forbid known-broken configurations. qemu in theory supports it on
    other architectures too, but presumably only for compatibility with x86
    guests that also run on vmware.
    CONFIG_PAGE_SIZE_64KB is used on hexagon, mips, sh and tile, the other
    symbols are architecture-specific names for the same thing.
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Kconfig 15.8 KB