arch/s390/crypto/paes_s390.c

File Facts

System

Linux kernel

Corpus path

arch/s390/crypto/paes_s390.c

Extension

.c

Size

45627 bytes

Lines

1730

Domain

Architecture Layer

Bucket

arch/s390

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/atomic.h
• linux/cpufeature.h
• linux/delay.h
• linux/err.h
• linux/init.h
• linux/miscdevice.h
• linux/module.h
• linux/mutex.h
• linux/spinlock.h
• crypto/aes.h
• crypto/algapi.h
• crypto/engine.h
• crypto/internal/skcipher.h
• crypto/xts.h
• asm/cpacf.h
• asm/pkey.h

Detected Declarations

• struct paes_protkey
• struct s390_paes_ctx
• struct s390_pxts_ctx
• struct clrkey_token
• struct ecb_param
• struct s390_pecb_req_ctx
• struct cbc_param
• struct s390_pcbc_req_ctx
• struct ctr_param
• struct s390_pctr_req_ctx
• struct xts_full_km_param
• struct xts_km_param
• struct xts_pcc_param
• struct s390_pxts_req_ctx
• function make_clrkey_token
• function paes_ctx_setkey
• function pxts_ctx_setkey
• function convert_key
• function convert_key
• function convert_key
• function ecb_paes_setkey
• function ecb_paes_do_crypt
• function ecb_paes_crypt
• function ecb_paes_encrypt
• function ecb_paes_decrypt
• function ecb_paes_init
• function ecb_paes_exit
• function ecb_paes_do_one_request
• function cbc_paes_setkey
• function cbc_paes_do_crypt
• function cbc_paes_crypt
• function cbc_paes_encrypt
• function cbc_paes_decrypt
• function cbc_paes_init
• function cbc_paes_exit
• function cbc_paes_do_one_request
• function ctr_paes_setkey
• function __ctrblk_init
• function ctr_paes_do_crypt
• function ctr_paes_crypt
• function ctr_paes_init
• function ctr_paes_exit
• function ctr_paes_do_one_request
• function xts_paes_setkey
• function xts_paes_do_crypt_fullkey
• function __xts_2keys_prep_param
• function xts_paes_do_crypt_2keys
• function xts_paes_do_crypt

Annotated Snippet

module_init(paes_s390_init);
module_exit(paes_s390_fini);

MODULE_ALIAS_CRYPTO("ecb(paes)");
MODULE_ALIAS_CRYPTO("cbc(paes)");
MODULE_ALIAS_CRYPTO("ctr(paes)");
MODULE_ALIAS_CRYPTO("xts(paes)");

MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm with protected keys");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/atomic.h`, `linux/cpufeature.h`, `linux/delay.h`, `linux/err.h`, `linux/init.h`, `linux/miscdevice.h`, `linux/module.h`, `linux/mutex.h`.
• Detected declarations: `struct paes_protkey`, `struct s390_paes_ctx`, `struct s390_pxts_ctx`, `struct clrkey_token`, `struct ecb_param`, `struct s390_pecb_req_ctx`, `struct cbc_param`, `struct s390_pcbc_req_ctx`, `struct ctr_param`, `struct s390_pctr_req_ctx`.
• Atlas domain: Architecture Layer / arch/s390.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.