Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Fix crash with unaligned prefetch requests (e.g. in stream jobs)
- vdpa-dev: Fix initialisation order to restore VDUSE compatibility
- iotests fixes

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEE3D3rFZqa+V09dFb+fwmycsiPL9YFAmYCzGQRHGt3b2xmQHJl
# ZGhhdC5jb20ACgkQfwmycsiPL9YYtg//XCFC4ANO1wVw6mqByvbPEi4rG9dYiTcz
# WCgS5QOVx8YMsxvyU7xg7vqT3V+7888UFx/cNC58Z5sY3TmohLus/a3Udap3ywpY
# RM+Lg8qwPEyFrmATyoU41sms7q8a8V7pwPm4nHXSP7O3npS/7hRMoET4ZFLJrVUk
# 72oNCHHpLeB8nnEXMvDXfMXmkHv9HthygKXlQBxX/WnjQQZObvfLsrUzk+gqUmzy
# hF9ojN5jrorydI/9lbkHaFkLc6+qOVxQRqrRjjPeKt/SuqJjAhQko0QU1jWjzcm9
# 5W7hQQluVB6B7Eol/ujOzSp6wxabxT/HRq2kwLwuWW6qpNNKIECCxrUyFR4WWEt9
# TI3DDsniq/bbd+CBtL1t68PhN9S7gGorA8UPfwfgp75N3BmEPhe10BEmazpjvLCC
# zTmJYgpvDOJdwhM3loeli/2CA9l4xF0jTQWfry1vaaddC4wQKmK+mJaDhCvns/RL
# MPCMaZ0kuGKdFSAIqshbffEaTdOk5liuQ5l45AtUyXkZh+mcR8tjmb59RfnNCZRc
# 2N8MvDF03RyUVplD3fsnapiTc+Yfzkdxc93dUGybfolvPecp+xrgQojrTyDOhCTY
# ZQXjgEPNkkhMukcnRWPrG2BzQxXKeUODTFetUTjpsvGCt2RttW4EuAP000JMd7Tl
# DziVCvmn6c0=
# =OIUm
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 26 Mar 2024 13:23:48 GMT
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin:
  iotests: add test for stream job with an unaligned prefetch read
  block-backend: fix edge case in bdrv_next_cleanup() where BDS associated to BB changes
  block-backend: fix edge case in bdrv_next() where BDS associated to BB changes
  block/io: accept NULL qiov in bdrv_pad_request
  vdpa-dev: Fix initialisation order to restore VDUSE compatibility
  tests/qemu-iotests: Test 157 and 227 require virtio-blk

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>