commit 85d56f812f4d020b3b486682aff07d9f4a4c60fe
author Xiaofei Lee <hbuxiaofei@gmail.com> Mon Nov 21 22:54:10 2022 +0800
committer Kevin O'Connor <kevin@koconnor.net> Tue Nov 22 13:11:49 2022 -0500
tree 6ed7821413e37caf2e5819ba3920b6794622d169
parent 46de2eec93bffa0706e6229c0da2919763c8eb04

virtio-blk: Fix incorrect type conversion in virtio_blk_op()

When using spdk aio bdev driver, the qemu command line like this:

qemu-system-x86_64 \
    -chardev socket,id=char0,path=/tmp/vhost.0 \
    -device vhost-user-blk-pci,id=blk0,chardev=char0 \
    ...

Boot failure message as below:

e820 map has 7 items:
  0: 0000000000000000 - 000000000009fc00 = 1 RAM
  1: 000000000009fc00 - 00000000000a0000 = 2 RESERVED
  2: 00000000000f0000 - 0000000000100000 = 2 RESERVED
  3: 0000000000100000 - 000000007ffdd000 = 1 RAM
  4: 000000007ffdd000 - 0000000080000000 = 2 RESERVED
  5: 00000000feffc000 - 00000000ff000000 = 2 RESERVED
  6: 00000000fffc0000 - 0000000100000000 = 2 RESERVED
enter handle_19:
  NULL
Booting from Hard Disk...
Boot failed: could not read the boot disk

Fixes: a05af290bac5 ("virtio-blk: split large IO according to size_max")

Acked-by: Andy Pei <andy.pei@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Xiaofei Lee <hbuxiaofei@gmail.com>