58 	 * - Intel, AMD: ecx[bit 26] in basic info = XSAVE/XRSTOR instructions supported by a chip.  in cpuinfo_x86_detect_isa()
59 	 * - Intel, AMD: ecx[bit 27] in basic info = XSAVE/XRSTOR instructions enabled by OS.  in cpuinfo_x86_detect_isa()
73 		 * - Intel, AMD: XFEATURE_ENABLED_MASK[bit 1] for low 128 bits of ymm registers  in cpuinfo_x86_detect_isa()
74 		 * - Intel, AMD: XFEATURE_ENABLED_MASK[bit 2] for high 128 bits of ymm registers  in cpuinfo_x86_detect_isa()
83 		 * - Intel, AMD: XFEATURE_ENABLED_MASK[bit 1] for low 128 bits of zmm registers  in cpuinfo_x86_detect_isa()
84 		 * - Intel, AMD: XFEATURE_ENABLED_MASK[bit 2] for bits 128-255 of zmm registers  in cpuinfo_x86_detect_isa()
85 		 * - Intel: XFEATURE_ENABLED_MASK[bit 5] for 8 64-bit OpMask registers (k0-k7)  in cpuinfo_x86_detect_isa()
86 		 * - Intel: XFEATURE_ENABLED_MASK[bit 6] for the high 256 bits of the zmm registers zmm0-zmm15  in cpuinfo_x86_detect_isa()
87 		 * - Intel: XFEATURE_ENABLED_MASK[bit 7] for the 512-bit zmm registers zmm16-zmm31  in cpuinfo_x86_detect_isa()
96 		 * - Intel: XFEATURE_ENABLED_MASK[bit 3] for BNDREGS  in cpuinfo_x86_detect_isa()
97 		 * - Intel: XFEATURE_ENABLED_MASK[bit 4] for BNDCSR  in cpuinfo_x86_detect_isa()
108 	 * - Intel, AMD: edx[bit 4] in basic info.  in cpuinfo_x86_detect_isa()
109 	 * - AMD: edx[bit 4] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
116 	 * - Intel, AMD: edx[bit 11] in basic info.  in cpuinfo_x86_detect_isa()
123 	 * - Intel, AMD: edx[bit 11] in extended info.  in cpuinfo_x86_detect_isa()
130 	 * - Intel, AMD: edx[bit 5] in basic info.  in cpuinfo_x86_detect_isa()
131 	 * - AMD: edx[bit 5] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
137 	 * - AMD: ebx[bit 0] in processor capacity info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
143 	 * - Intel, AMD: edx[bit 19] in basic info.  in cpuinfo_x86_detect_isa()
149 	 * - Intel: ebx[bit 23] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
155 	 * - Intel, AMD: ecx[bit 3] in basic info.  in cpuinfo_x86_detect_isa()
167 	 * - Intel, AMD: edx[bit 24] in basic info.  in cpuinfo_x86_detect_isa()
168 	 * - AMD: edx[bit 24] in extended info (zero bit on Intel CPUs, EMMX bit on Cyrix CPUs).  in cpuinfo_x86_detect_isa()
184 	 * - Intel, AMD: ecx[bit 26] in basic info.  in cpuinfo_x86_detect_isa()
191 	 * - Intel, AMD: edx[bit 0] in basic info.  in cpuinfo_x86_detect_isa()
192 	 * - AMD: edx[bit 0] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
198 	 * - Intel, AMD: edx[bit 23] in basic info.  in cpuinfo_x86_detect_isa()
199 	 * - AMD: edx[bit 23] in extended info (zero bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
205 	 * - Intel, AMD: edx[bit 25] in basic info (SSE feature flag).  in cpuinfo_x86_detect_isa()
206 	 * - Pre-SSE AMD: edx[bit 22] in extended info (zero bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
213 	 * - AMD: edx[bit 31] of extended info (zero bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
219 	 * - AMD: edx[bit 30] of extended info (zero bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
234 	 *        On Intel this bit indicates PREFETCHW, but not PREFETCH support.  in cpuinfo_x86_detect_isa()
235 	 * - AMD: edx[bit 31] of extended info (implied by 3dnow! support). Reserved bit on Intel CPUs.  in cpuinfo_x86_detect_isa()
236 	 * - AMD: edx[bit 30] of extended info (implied by 3dnow!+ support). Reserved bit on Intel CPUs.  in cpuinfo_x86_detect_isa()
253 			 * 3dnow! prefetch CPUID bit follows Intel spec (PREFETCHW, but not PREFETCH).  in cpuinfo_x86_detect_isa()
262 	 * - Intel: ecx[bit 8] of extended info (PREFETCHW instruction only).  in cpuinfo_x86_detect_isa()
263 	 * - AMD: edx[bit 31] of extended info (implied by 3dnow! support). Reserved bit on Intel CPUs.  in cpuinfo_x86_detect_isa()
264 	 * - AMD: edx[bit 30] of extended info (implied by 3dnow!+ support). Reserved bit on Intel CPUs.  in cpuinfo_x86_detect_isa()
280 	 * - Intel: ecx[bit 0] of structured feature info (ecx = 0). Reserved bit on AMD.  in cpuinfo_x86_detect_isa()
287 	 * - Intel, AMD: edx[bit 25] in basic info.  in cpuinfo_x86_detect_isa()
293 	 * - Intel, AMD: edx[bit 26] in basic info.  in cpuinfo_x86_detect_isa()
300 	 * - Intel, AMD: ecx[bit 0] in basic info.  in cpuinfo_x86_detect_isa()
323 			 * - Intel, AMD: MXCSR[bit 6]  in cpuinfo_x86_detect_isa()
332 	 * - Intel, AMD: ecx[bit 9] in basic info.  in cpuinfo_x86_detect_isa()
339 	 * - Intel, AMD: ecx[bit 19] in basic info.  in cpuinfo_x86_detect_isa()
345 	 * - Intel: ecx[bit 20] in basic info (reserved bit on AMD CPUs).  in cpuinfo_x86_detect_isa()
351 	 * - AMD: ecx[bit 6] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
357 	 * - AMD: ecx[bit 7] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
363 	 * - Intel, AMD: ecx[bit 28] in basic info.  in cpuinfo_x86_detect_isa()
369 	 * - Intel: ecx[bit 12] in basic info (reserved bit on AMD CPUs).  in cpuinfo_x86_detect_isa()
375 	 * - AMD: ecx[bit 16] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
381 	 * - AMD: ecx[bit 11] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
387 	 * - Intel, AMD: ecx[bit 29] in basic info.  in cpuinfo_x86_detect_isa()
393 	 * - Intel: ebx[bit 5] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
399 	 * - Intel: ebx[bit 16] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
405 	 * - Intel: ebx[bit 26] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
411 	 * - Intel: ebx[bit 27] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
417 	 * - Intel: ebx[bit 28] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
423 	 * - Intel: ebx[bit 17] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
429 	 * - Intel: ebx[bit 30] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
435 	 * - Intel: ebx[bit 31] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
441 	 * - Intel: ebx[bit 21] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
447 	 * - Intel: ecx[bit 1] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
453 	 * - Intel: ecx[bit 6] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
459 	 * - Intel: ecx[bit 12] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
465 	 * - Intel: ecx[bit 14] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
471 	 * - Intel: ecx[bit 11] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
477 	 * - Intel: edx[bit 2] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
483 	 * - Intel: edx[bit 3] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
489 	 * - Intel: edx[bit 8] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
495 	 * - Intel: eax[bit 5] in structured feature info (ecx = 1).  in cpuinfo_x86_detect_isa()
501 	 * - Intel: ebx[bit 4] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
507 	 * - Intel: ebx[bit 11] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
513 	 * - Intel: either HLE or RTM is supported  in cpuinfo_x86_detect_isa()
519 	 * - Intel: ebx[bit 14] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
526 	 * - Intel, AMD: edx[bit 15] in basic info.  in cpuinfo_x86_detect_isa()
527 	 * - AMD: edx[bit 15] in extended info (zero bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
533 	 * - Intel, AMD: edx[bit 8] in basic info.  in cpuinfo_x86_detect_isa()
534 	 * - AMD: edx[bit 8] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
541 	 * - Intel, AMD: ecx[bit 13] in basic info.  in cpuinfo_x86_detect_isa()
547 	 * - Intel: ebx[bit 24] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
553 	 * - Intel: ecx[bit 22] in basic info.  in cpuinfo_x86_detect_isa()
561 	 * - Intel, AMD: ecx[bit 0] in extended info.  in cpuinfo_x86_detect_isa()
568 	 * - Intel: ebx[bit 0] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
574 	 * - Intel, AMD: ecx[bit 5] in extended info.  in cpuinfo_x86_detect_isa()
580 	 * - Intel, AMD: ecx[bit 23] in basic info.  in cpuinfo_x86_detect_isa()
586 	 * - AMD: ecx[bit 21] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
592 	 * - Intel, AMD: ebx[bit 3] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
598 	 * - Intel: ebx[bit 8] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
604 	 * - Intel: ebx[bit 19] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
610 	 * - Intel: ecx[bit 25] in basic info (reserved bit on AMD CPUs).  in cpuinfo_x86_detect_isa()
616 	 * - Intel: ecx[bit 9] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
622 	 * - Intel: ecx[bit 1] in basic info (reserved bit on AMD CPUs).  in cpuinfo_x86_detect_isa()
628 	 * - Intel: ecx[bit 10] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
634 	 * - Intel: ecx[bit 8] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
640 	 * - Intel: ecx[bit 30] in basic info (reserved bit on AMD CPUs).  in cpuinfo_x86_detect_isa()
646 	 * - Intel: ebx[bit 18] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
652 	 * - Intel: ebx[bit 29] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()
707 	 * - AMD: ecx[bit 15] in extended info (reserved bit on Intel CPUs).  in cpuinfo_x86_detect_isa()
713 	 * - Intel, AMD: edx[bit 27] in extended info.  in cpuinfo_x86_detect_isa()
719 	 * - Intel: ecx[bit 22] in structured feature info (ecx = 0).  in cpuinfo_x86_detect_isa()