42 /* Per-cpu ISA extensions. */
169 	 * F and D, so if any of the vector extensions that do floating point  in riscv_ext_vector_float_validate()
170 	 * are to be usable, both floating point extensions need to be usable.  in riscv_ext_vector_float_validate()
189 	 * it should be enough to check that any of the vector extensions are  in riscv_ext_vector_crypto_validate()
374  * existence of the CSR, and treat it as a subset of those other extensions.
386  * These extensions will be enabled and then validated depending on the
405  * 1. All multi-letter extensions must be separated from other extensions by an
408  * 2. Additional standard extensions (starting with 'Z') must be sorted after
409  *    single-letter extensions and before any higher-privileged extensions.
413  *    If multiple 'Z' extensions are named, they must be ordered first by
416  * 3. Standard supervisor-level extensions (starting with 'S') must be listed
417  *    after standard unprivileged extensions.  If multiple supervisor-level
418  *    extensions are listed, they must be ordered alphabetically.
420  * 4. Standard machine-level extensions (starting with 'Zxm') must be listed
421  *    after any lower-privileged, standard extensions.  If multiple
422  *    machine-level extensions are listed, they must be ordered
425  * 5. Non-standard extensions (starting with 'X') must be listed after all
426  *    standard extensions. If multiple non-standard extensions are listed, they
553  * well as correct extension dependencies. Some extensions depends on specific
555  * and this function will actually validate all the extensions provided in
556  * source_isa into the resolved_isa based on extensions validate() callbacks.
594 			/* Single letter extensions get set in hwcap */  in riscv_resolve_isa()
633 				pr_warn_once("Vendor extensions are ignored in riscv,isa. Use riscv,isa-extensions instead.");  in riscv_parse_isa_string()
636 			 * As multi-letter extensions must be split from other multi-letter  in riscv_parse_isa_string()
637 			 * extensions with an "_", the end of a multi-letter extension will  in riscv_parse_isa_string()
649 			 * not valid ISA extensions. It works unless the first  in riscv_parse_isa_string()
664 			 * As multi-letter extensions must be split from other multi-letter  in riscv_parse_isa_string()
665 			 * extensions with an "_", the end of a multi-letter extension will  in riscv_parse_isa_string()
669 			 * Next, as the extensions version is currently ignored, we  in riscv_parse_isa_string()
677 			 * character itself while eliminating the extensions version number.  in riscv_parse_isa_string()
706 			 * Things are a little easier for single-letter extensions, as they  in riscv_parse_isa_string()
871 			if (of_property_match_string(cpu_node, "riscv,isa-extensions",  in riscv_fill_cpu_vendor_ext()
876 			 * Assume that subset extensions are all members of the  in riscv_fill_cpu_vendor_ext()
889  * Populate all_harts_isa_bitmap for each vendor with all of the extensions that
971 		if (!of_property_present(cpu_node, "riscv,isa-extensions")) {  in riscv_fill_hwcap_from_ext_list()
979 			if (of_property_match_string(cpu_node, "riscv,isa-extensions",  in riscv_fill_hwcap_from_ext_list()
1009 	 * Execute ghostwrite mitigation immediately after detecting extensions  in riscv_fill_hwcap_from_ext_list()
1083 	pr_info("riscv: base ISA extensions %s\n", print_str);  in riscv_fill_hwcap()