* refactor the save_vector_registers_x86() algorithm to depend directly on preempt_count(), and use local_bh_enable() and preempt_disable() directly, to mitigate glitchiness around irq_fpu_usable() and crypto_simd_usable();
* eliminate the WC_FPU_ALREADY_FLAG kludge.
* improve the error and warning messages, and add some additional checks and messages for unexpected states; add VRG_PR_ERR_X and VRG_PR_WARN_X for pr_*_once() semantics on regular builds, but unlimited messages when WOLFSSL_LINUXKM_VERBOSE_DEBUG.
linuxkm/linuxkm_wc_port.h and linuxkm/module_hooks.c:
* move the spinlock-based implementation of wc_LockMutex() from linuxkm_wc_port.h to module_hooks.c, due to numerous stuboorn direct external symbol references;
* extensively refactor the kernel header #include strategy, keeping many more superfluous headers out of __PIE__ objects, and fixing unavoidable static header functions with grafted __always_inline attributes;
* add version exceptions for RHEL 9.5.
linuxkm/Kbuild:
* on x86 with CONFIG_MITIGATION_{RETPOLINE,RETHUNK}, use inline rethunks rather than none;
* refactor check for "Error: section(s) missed by containerization." using `readelf --sections --syms`, for 100% coverage, more informative error output, and suppression of false positives on printk-related cruft;
configure.ac and linuxkm/lkcapi_sha_glue.c: use LINUXKM_LKCAPI_[DONT_]REGISTER_{SHA,HMAC}_ALL to represent --enable-linuxkm-lkcapi-register=[-]all-{sha,hmac}, which allows alg families (notably SHA1) to be masked out piecemeal;
linuxkm/lkcapi_rsa_glue.c: in linuxkm_test_pkcs1pad_driver(), mitigate unused args when LINUXKM_AKCIPHER_NO_SIGNVERIFY.
linuxkm/linuxkm_wc_port.h: fixes for legacy kernels, particularly: when building TLS stack (!WOLFCRYPT_ONLY), use the best heap with a functioning realloc(), else use kvmalloc() and friends if available, even if kvrealloc() is unavailable. also, provide for XMALLOC_USER and XMALLOC_OVERRIDE;
linuxkm/lkcapi_glue.c: recognize the new CONFIG_CRYPTO_SELFTESTS_FULL alongside the old CONFIG_CRYPTO_MANAGER_EXTRA_TESTS;
linuxkm/linuxkm_memory.c: restore my__show_free_areas() in case it's still needed.
linuxkm/Kbuild: add linker script flag, containerize several more previously-missed ELF sections, and add a test verifying no sections were missed;
linuxkm/linuxkm_memory.c: remove obsolete lkm_realloc() shim and unneeded my__show_free_areas() wrapper;
linuxkm/linuxkm_wc_port.h: add new mapping from realloc() to native kvrealloc(), and gate out a slew of headers when __PIE__ to avoid polluting wolfCrypt objects with various unneeded header-implemented functions with associated awkward symbols references;
linuxkm/lkcapi_glue.c: harmonize gate for REGISTER_ALG_OPTIONAL();
linuxkm/module_hooks.c: add "ERROR:" prefixes on pr_err()s; add wc_RunAllCast_fips() at shutdown to send confidence verification to the kernel log; remove section bounds checks now that layout is unreliable;
wolfssl/wolfcrypt/settings.h: for WOLFSSL_LINUXKM && HAVE_LINUXKM_PIE_SUPPORT, #define WOLFSSL_ECC_CURVE_STATIC and WOLFSSL_NAMES_STATIC;
wolfssl/wolfcrypt/types.h: refactor the typedef for wcchar from a pointer to a char[];
wolfcrypt/src/wc_xmss.c and wolfssl/wolfcrypt/wc_lms.h: add WOLFSSL_NAMES_STATIC code paths for struct wc_XmssString and struct wc_LmsParamsMap;
wolfcrypt/src/asn.c: add WOLFSSL_NAMES_STATIC code paths for struct CertNameData, and add static attribute to a slew of wcchars not used or declared outside asn.c.
linuxkm/lkcapi_glue.c (added in earlier commit):
implement linuxkm_lkcapi_register() and linuxkm_lkcapi_unregister() with idempotency.
add AES-XTS algorithm glue and self-test implementations.
add per-algorithm gating: LINUXKM_LKCAPI_REGISTER_AESCBC, _AESCFB, _AESGCM, and _AESXTS.
carry forward philljj's implementations for AES-CBC, AES-CFB, and AES-GCM, with various cleanups.
linuxkm/module_hooks.c:
print the "wolfCrypt container hashes" message only if DEBUG_LINUXKM_PIE_SUPPORT is set.
render the FIPS version for the self-test success message using the HAVE_FIPS_VERSION* macros.
add a "skipping full wolfcrypt_test() ..." message for --disable-crypttests builds.
add CONFIG_FORTIFY_SOURCE gates.
configure.ac:
add support for --enable-linuxkm-lkcapi-register;
add AES-XTS to output config summary;
rename --enable-xts to --enable-aesxts (retaining old option for backward compatibility).
linuxkm/linuxkm_wc_port.h: add support for CONFIG_FORTIFY_SOURCE.
linuxkm/linuxkm_memory.c:
fix retvals in save_vector_registers_x86() (wc-style MEMORY_E, not sys-style ENOMEM).
add __my_fortify_panic() implementation.
linuxkm/Kbuild: for ENABLED_LINUXKM_PIE in rename-pie-text-and-data-sections recipe, create an .rodata.wolfcrypt section.
linuxkm/include.am: add linuxkm/lkcapi_glue.c to EXTRA_DIST.
wolfcrypt/test/test.c:
when defined(HAVE_FIPS_VERSION), inhibit a test clause in aes_xts_128_test() disallowed by FIPS ("FIPS AES-XTS main and tweak keys must differ").
fix out-of-order user message in ecc_test().
linuxkm/linuxkm_wc_port.h: activate SAVE/RESTORE_VECTOR_REGISTERS() whenever defined(WOLFSSL_LINUXKM_USE_SAVE_VECTOR_REGISTERS) for benchmark.c support, independent of vector crypto features;
fix and optimize various alignment issues with stack and heap allocations;
fix macro definitions for XMALLOC/XREALLOC/XFREE to correctly use kvmalloc and friends when defined(HAVE_KVMALLOC), and to use wolfSSL_Malloc() and friends when defined(WOLFSSL_TRACK_MEMORY);
purge stale LINUXKM_SIMD_IRQ code.
linuxkm: when -DWOLFCRYPT_ONLY, don't include ssl.h in module_exports.c.template and module_hooks.c, and fix gating to work right with that;
wolfssl/wolfcrypt/types.h: add support for a WOLFSSL_XFREE_NO_NULLNESS_CHECK gate (used in cppcheck analysis).
