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linuxkm/lkcapi_aes_glue.c: force WC_LINUXKM_SVR_NO_BATCHING when CONFIG_PREEMPT_RT (walk/map paths must run preemptible with that config).

pull/11382/head
Daniel Pouzzner 2026-09-10 15:50:50 -05:00
parent 5fc5bee9f0
commit 2b03ece6d4
1 changed files with 9 additions and 0 deletions
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linuxkm/lkcapi_aes_glue.c
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@ -82,6 +82,15 @@
#error WC_LINUXKM_C_FALLBACK_IN_SHIMS is defined but WC_FLAG_DONT_USE_VECTOR_OPS is missing.
#endif
#if IS_ENABLED(CONFIG_PREEMPT_RT) && !defined(WC_LINUXKM_SVR_NO_BATCHING)
/* SVR batching holds the FPU section across scatterwalk advancement, which
* PREEMPT_RT forbids: walk/map paths must run preemptible (see
* Documentation/core-api/real-time/architecture-porting.rst). Per-op SVRs
* remain RT-legal.
*/
#define WC_LINUXKM_SVR_NO_BATCHING
#endif
/* note the FIPS code will be returned on failure even in non-FIPS builds. */
#define LINUXKM_LKCAPI_AES_KAT_MISMATCH_E AES_KAT_FIPS_E
#define LINUXKM_LKCAPI_AESGCM_KAT_MISMATCH_E AESGCM_KAT_FIPS_E