This patch adds zoned storage emulation to the virtio-blk driver. The patch implements the virtio-blk ZBD support standardization that is recently accepted by virtio-spec. The link to related commit is at https://github.com/oasis-tcs/virtio-spec/commit/b4e8efa0fa6c8d844328090ad15db65af8d7d981 The Linux zoned device code that implemented by Dmitry Fomichev has been released at the latest Linux version v6.3-rc1. Aside: adding zoned=on alike options to virtio-blk device will be considered in following-up plan. v9: - address review comments * add docs for zoned emulation use case [Matias] * add the zoned feature bit to qmp monitor [Matias] * add the version number for newly added configs of accounting [Markus] v8: - address Stefan's review comments * rm aio_context_acquire/release in handle_req * rename function return type * rename BLOCK_ACCT_APPEND to BLOCK_ACCT_ZONE_APPEND for clarity v7: - update headers to v6.3-rc1 v6: - address Stefan's review comments * add accounting for zone append operation * fix in_iov usage in handle_request, error handling and typos v5: - address Stefan's review comments * restore the way writing zone append result to buffer * fix error checking case and other errands v4: - change the way writing zone append request result to buffer - change zone state, zone type value of virtio_blk_zone_descriptor - add trace events for new zone APIs v3: - use qemuio_from_buffer to write status bit [Stefan] - avoid using req->elem directly [Stefan] - fix error checkings and memory leak [Stefan] v2: - change units of emulated zone op coresponding to block layer APIs - modify error checking cases [Stefan, Damien] v1: - add zoned storage emulation Sam Li (5): include: update virtio_blk headers to v6.3-rc1 virtio-blk: add zoned storage emulation for zoned devices block: add accounting for zone append operation virtio-blk: add some trace events for zoned emulation docs/zoned-storage:add zoned emulation use case block/qapi-sysemu.c | 11 + block/qapi.c | 18 + docs/devel/zoned-storage.rst | 17 + hw/block/trace-events | 7 + hw/block/virtio-blk-common.c | 2 + hw/block/virtio-blk.c | 405 +++++++++++++++++++ hw/virtio/virtio-qmp.c | 2 + include/block/accounting.h | 1 + include/standard-headers/drm/drm_fourcc.h | 12 + include/standard-headers/linux/ethtool.h | 48 ++- include/standard-headers/linux/fuse.h | 45 ++- include/standard-headers/linux/pci_regs.h | 1 + include/standard-headers/linux/vhost_types.h | 2 + include/standard-headers/linux/virtio_blk.h | 105 +++++ linux-headers/asm-arm64/kvm.h | 1 + linux-headers/asm-x86/kvm.h | 34 +- linux-headers/linux/kvm.h | 9 + linux-headers/linux/vfio.h | 15 +- linux-headers/linux/vhost.h | 8 + qapi/block-core.json | 68 +++- qapi/block.json | 4 + 21 files changed, 794 insertions(+), 21 deletions(-) -- 2.39.2
