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Milan Broz 499d2d2f4c sed-opal: Add STACK_RESET command 
The TCG Opal device could enter a state where no new session can be
created, blocking even Discovery or PSID reset. While a power cycle
or waiting for the timeout should work, there is another possibility
for recovery: using the Stack Reset command.

The Stack Reset command is defined in the TCG Storage Architecture Core
Specification and is mandatory for all Opal devices (see Section 3.3.6
of the Opal SSC specification).

This patch implements the Stack Reset command. Sending it should clear
all active sessions immediately, allowing subsequent commands to run
successfully. While it is a TCG transport layer command, the Linux
kernel implements only Opal ioctls, so it makes sense to use the
IOC_OPAL ioctl interface.

The Stack Reset takes no arguments; the response can be success or pending.
If the command reports a pending state, userspace can try to repeat it;
in this case, the code returns -EBUSY.

Signed-off-by: Milan Broz <gmazyland@gmail.com>
Reviewed-by: Ondrej Kozina <okozina@redhat.com>
Link: https://patch.msgid.link/20260310095349.411287-1-gmazyland@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2026-03-31 07:04:00 -06:00
..
partitions block: partitions: Replace pp_buf with struct seq_buf 2026-03-21 08:27:08 -06:00
Kconfig block: Remove obsolete configs BLK_MQ_{PCI,VIRTIO} 2025-05-14 05:43:56 -06:00
Kconfig.iosched block: Default to use cgroup support for BFQ 2023-01-30 09:42:42 -07:00
Makefile block: add fs_bio_integrity helpers 2026-03-09 07:47:02 -06:00
badblocks.c badblocks: Fix a nonsense WARN_ON() which checks whether a u64 variable < 0 2025-03-10 07:41:58 -06:00
bdev.c block: remove redundant kill_bdev() call in set_blocksize() 2026-02-04 09:28:18 -07:00
bfq-cgroup.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
bfq-iosched.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
bfq-iosched.h block, bfq: update outdated comment 2026-01-01 08:57:37 -07:00
bfq-wf2q.c block, bfq: inject I/O to underutilized actuators 2023-01-29 15:18:33 -07:00
bio-integrity-auto.c block: prepare generation / verification helpers for fs usage 2026-03-09 07:47:02 -06:00
bio-integrity-fs.c block: add fs_bio_integrity helpers 2026-03-09 07:47:02 -06:00
bio-integrity.c block: factor out a bio_integrity_setup_default helper 2026-03-09 07:47:02 -06:00
bio.c block: fix bio_alloc_bioset slowpath GFP handling 2026-03-23 07:58:32 -06:00
blk-cgroup-fc-appid.c block: Replace all non-returning strlcpy with strscpy 2023-06-01 09:13:31 -06:00
blk-cgroup-rwstat.c blk-cgroup: use group allocation/free of per-cpu counters API 2024-04-03 09:10:17 -06:00
blk-cgroup-rwstat.h blk-cgroup: rwstat: fix kernel-doc warnings in header file 2025-01-13 07:47:09 -07:00
blk-cgroup.c blk-cgroup: wait for blkcg cleanup before initializing new disk 2026-03-11 08:30:30 -06:00
blk-cgroup.h block: initialize bio issue time in blk_mq_submit_bio() 2025-09-10 05:23:45 -06:00
blk-core.c blk-mq: add a new queue sysfs attribute async_depth 2026-02-03 07:45:36 -07:00
blk-crypto-fallback.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
blk-crypto-internal.h blk-crypto: handle the fallback above the block layer 2026-01-11 12:55:41 -07:00
blk-crypto-profile.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
blk-crypto-sysfs.c blk-crypto: make blk_crypto_attr instances const 2026-03-17 19:29:16 -06:00
blk-crypto.c blk-crypto: handle the fallback above the block layer 2026-01-11 12:55:41 -07:00
blk-flush.c block: pass io_comp_batch to rq_end_io_fn callback 2026-01-20 10:12:54 -07:00
blk-ia-ranges.c block: ia-ranges: make blk_ia_range_sysfs_entry instances const 2026-03-17 19:29:16 -06:00
blk-integrity.c block: don't merge bios with different app_tags 2026-01-06 19:10:08 -07:00
blk-ioc.c copy_process: pass clone_flags as u64 across calltree 2025-09-01 15:31:34 +02:00
blk-iocost.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
blk-iolatency.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
blk-ioprio.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
blk-ioprio.h blk-ioprio: remove per-disk structure 2024-07-28 16:47:51 -06:00
blk-lib.c block: change return type to void 2026-02-12 04:23:53 -07:00
blk-map.c block-7.0-20260305 2026-03-06 08:36:18 -08:00
blk-merge.c for-7.0/block-stable-pages-20260206 2026-02-09 18:14:52 -08:00
blk-mq-cpumap.c blk-mq: add number of queue calc helper 2025-07-01 10:24:19 -06:00
blk-mq-debugfs.c block: allow submitting all zone writes from a single context 2026-03-09 14:30:00 -06:00
blk-mq-debugfs.h blk-mq-debugfs: remove blk_mq_debugfs_unregister_rqos() 2026-02-02 07:05:19 -07:00
blk-mq-dma.c block: fix partial IOVA mapping cleanup in blk_rq_dma_map_iova 2026-02-12 04:23:31 -07:00
blk-mq-sched.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
blk-mq-sched.h blk-mq-sched: unify elevators checking for async requests 2026-02-03 07:45:36 -07:00
blk-mq-sysfs.c blk-mq: make blk_mq_hw_ctx_sysfs_entry instances const 2026-03-17 19:29:16 -06:00
blk-mq-tag.c blk-mq: use array manage hctx map instead of xarray 2025-11-28 09:09:19 -07:00
blk-mq.c block: clear BIO_QOS flags in blk_steal_bios() 2026-03-10 07:11:09 -06:00
blk-mq.h blk-mq: use queue_hctx in blk_mq_map_queue_type 2025-12-01 07:18:31 -07:00
blk-pm.c block: force noio scope in blk_mq_freeze_queue 2025-01-31 07:20:08 -07:00
blk-pm.h
…
blk-rq-qos.c blk-mq-debugfs: remove blk_mq_debugfs_unregister_rqos() 2026-02-02 07:05:19 -07:00
blk-rq-qos.h blk-rq-qos: Remove unlikely() hints from QoS checks 2026-01-06 19:08:23 -07:00
blk-settings.c blk-integrity: support arbitrary buffer alignment 2026-03-14 07:44:30 -06:00
blk-stat.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
blk-stat.h blk-stat: convert struct blk_stat_callback to kernel-doc 2026-02-16 10:21:06 -07:00
blk-sysfs.c block: make queue_sysfs_entry instances const 2026-03-17 19:29:16 -06:00
blk-throttle.c block/blk-throttle: Remove throtl_slice from struct throtl_data 2025-11-17 09:39:48 -07:00
blk-throttle.h blk-throttle: fix access race during throttle policy activation 2025-09-08 08:24:44 -06:00
blk-timeout.c
…
blk-wbt.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
blk-wbt.h blk-wbt: factor out a helper wbt_set_lat() 2026-02-02 07:05:19 -07:00
blk-zoned.c block: allow submitting all zone writes from a single context 2026-03-09 14:30:00 -06:00
blk.h block: mark bvec_{alloc,free} static 2026-03-17 19:27:14 -06:00
bsg-lib.c bsg: add io_uring command support to generic layer 2026-03-19 11:38:24 -06:00
bsg.c bsg: add io_uring command support to generic layer 2026-03-19 11:38:24 -06:00
disk-events.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
early-lookup.c wrapper for access to ->bd_partno 2024-05-02 17:48:09 -04:00
elevator.c block: use trylock to avoid lockdep circular dependency in sysfs 2026-03-05 04:01:42 -07:00
elevator.h block: fix race between wbt_enable_default and IO submission 2025-12-12 12:51:11 -07:00
fops.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
genhd.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
holder.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ioctl.c block: allow IOC_PR_READ_* ioctls with BLK_OPEN_READ 2026-02-11 10:36:54 -07:00
ioprio.c block: remove test of incorrect io priority level 2025-05-08 09:04:12 -06:00
kyber-iosched.c kyber: covert to use request_queue->async_depth 2026-02-03 07:45:36 -07:00
mq-deadline.c mq-deadline: covert to use request_queue->async_depth 2026-02-03 07:45:36 -07:00
opal_proto.h sed-opal: Add STACK_RESET command 2026-03-31 07:04:00 -06:00
sed-opal.c sed-opal: Add STACK_RESET command 2026-03-31 07:04:00 -06:00
t10-pi.c blk-integrity: support arbitrary buffer alignment 2026-03-14 07:44:30 -06:00