Attachment 3000 Details for Bug 21386 – Parse Xen hw_caps CPUID

Parse Xen hw_caps CPUID

2011012510001527.py (text/plain), 8.18 KB, created by Philipp Hahn on 2011-02-01 12:02:10 CET

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Creator: Philipp Hahn

Created: 2011-02-01 12:02:10 CET

Size: 8.18 KB

patch

obsolete

>#!/usr/bin/python
>#
># Dump Xen CPU features
>#
>import re
>import sys
>
># xen-3.4.3/xen/include/asm-x86/cpufeature.h
>HEADER = """
>#define NCAPINTS        7       /* N 32-bit words worth of info */
>
>/* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */
>#define X86_FEATURE_FPU         (0*32+ 0) /* Onboard FPU */
>#define X86_FEATURE_VME         (0*32+ 1) /* Virtual Mode Extensions */
>#define X86_FEATURE_DE          (0*32+ 2) /* Debugging Extensions */
>#define X86_FEATURE_PSE         (0*32+ 3) /* Page Size Extensions */
>#define X86_FEATURE_TSC         (0*32+ 4) /* Time Stamp Counter */
>#define X86_FEATURE_MSR         (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
>#define X86_FEATURE_PAE         (0*32+ 6) /* Physical Address Extensions */
>#define X86_FEATURE_MCE         (0*32+ 7) /* Machine Check Architecture */
>#define X86_FEATURE_CX8         (0*32+ 8) /* CMPXCHG8 instruction */
>#define X86_FEATURE_APIC        (0*32+ 9) /* Onboard APIC */
>#define X86_FEATURE_SEP         (0*32+11) /* SYSENTER/SYSEXIT */
>#define X86_FEATURE_MTRR        (0*32+12) /* Memory Type Range Registers */
>#define X86_FEATURE_PGE         (0*32+13) /* Page Global Enable */
>#define X86_FEATURE_MCA         (0*32+14) /* Machine Check Architecture */
>#define X86_FEATURE_CMOV        (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
>#define X86_FEATURE_PAT         (0*32+16) /* Page Attribute Table */
>#define X86_FEATURE_PSE36       (0*32+17) /* 36-bit PSEs */
>#define X86_FEATURE_PN          (0*32+18) /* Processor serial number */
>#define X86_FEATURE_CLFLSH      (0*32+19) /* Supports the CLFLUSH instruction */
>#define X86_FEATURE_DS          (0*32+21) /* Debug Store */
>#define X86_FEATURE_ACPI        (0*32+22) /* ACPI via MSR */
>#define X86_FEATURE_MMX         (0*32+23) /* Multimedia Extensions */
>#define X86_FEATURE_FXSR        (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
>                                          /* of FPU context), and CR4.OSFXSR available */
>#define X86_FEATURE_XMM         (0*32+25) /* Streaming SIMD Extensions */
>#define X86_FEATURE_XMM2        (0*32+26) /* Streaming SIMD Extensions-2 */
>#define X86_FEATURE_SELFSNOOP   (0*32+27) /* CPU self snoop */
>#define X86_FEATURE_HT          (0*32+28) /* Hyper-Threading */
>#define X86_FEATURE_ACC         (0*32+29) /* Automatic clock control */
>#define X86_FEATURE_IA64        (0*32+30) /* IA-64 processor */
>#define X86_FEATURE_PBE         (0*32+31) /* Pending Break Enable */
>
>/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
>/* Don't duplicate feature flags which are redundant with Intel! */
>#define X86_FEATURE_SYSCALL     (1*32+11) /* SYSCALL/SYSRET */
>#define X86_FEATURE_MP          (1*32+19) /* MP Capable. */
>#define X86_FEATURE_NX          (1*32+20) /* Execute Disable */
>#define X86_FEATURE_MMXEXT      (1*32+22) /* AMD MMX extensions */
>#define X86_FEATURE_FFXSR       (1*32+25) /* FFXSR instruction optimizations */
>#define X86_FEATURE_PAGE1GB     (1*32+26) /* 1Gb large page support */
>#define X86_FEATURE_RDTSCP      (1*32+27) /* RDTSCP */
>#define X86_FEATURE_LM          (1*32+29) /* Long Mode (x86-64) */
>#define X86_FEATURE_3DNOWEXT    (1*32+30) /* AMD 3DNow! extensions */
>#define X86_FEATURE_3DNOW       (1*32+31) /* 3DNow! */
>
>/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
>#define X86_FEATURE_RECOVERY    (2*32+ 0) /* CPU in recovery mode */
>#define X86_FEATURE_LONGRUN     (2*32+ 1) /* Longrun power control */
>#define X86_FEATURE_LRTI        (2*32+ 3) /* LongRun table interface */
>
>/* Other features, Linux-defined mapping, word 3 */
>/* This range is used for feature bits which conflict or are synthesized */
>#define X86_FEATURE_CXMMX       (3*32+ 0) /* Cyrix MMX extensions */
>#define X86_FEATURE_K6_MTRR     (3*32+ 1) /* AMD K6 nonstandard MTRRs */
>#define X86_FEATURE_CYRIX_ARR   (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
>#define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
>/* cpu types for specific tunings: */
>#define X86_FEATURE_K8          (3*32+ 4) /* Opteron, Athlon64 */
>#define X86_FEATURE_K7          (3*32+ 5) /* Athlon */
>#define X86_FEATURE_P3          (3*32+ 6) /* P3 */
>#define X86_FEATURE_P4          (3*32+ 7) /* P4 */
>#define X86_FEATURE_CONSTANT_TSC (3*32+ 8) /* TSC ticks at a constant rate */
>#define X86_FEATURE_NOSTOP_TSC  (3*32+ 9) /* TSC does not stop in C states */
>#define X86_FEATURE_ARAT        (3*32+ 10) /* Always running APIC timer */
>
>/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
>#define X86_FEATURE_XMM3        (4*32+ 0) /* Streaming SIMD Extensions-3 */
>#define X86_FEATURE_DTES64      (4*32+ 2) /* 64-bit Debug Store */
>#define X86_FEATURE_MWAIT       (4*32+ 3) /* Monitor/Mwait support */
>#define X86_FEATURE_DSCPL       (4*32+ 4) /* CPL Qualified Debug Store */
>#define X86_FEATURE_VMXE        (4*32+ 5) /* Virtual Machine Extensions */
>#define X86_FEATURE_SMXE        (4*32+ 6) /* Safer Mode Extensions */
>#define X86_FEATURE_EST         (4*32+ 7) /* Enhanced SpeedStep */
>#define X86_FEATURE_TM2         (4*32+ 8) /* Thermal Monitor 2 */
>#define X86_FEATURE_SSSE3       (4*32+ 9) /* Supplemental Streaming SIMD Extensions-3 */
>#define X86_FEATURE_CID         (4*32+10) /* Context ID */
>#define X86_FEATURE_CX16        (4*32+13) /* CMPXCHG16B */
>#define X86_FEATURE_XTPR        (4*32+14) /* Send Task Priority Messages */
>#define X86_FEATURE_PDCM        (4*32+15) /* Perf/Debug Capability MSR */
>#define X86_FEATURE_DCA         (4*32+18) /* Direct Cache Access */
>#define X86_FEATURE_SSE4_1      (4*32+19) /* Streaming SIMD Extensions 4.1 */
>#define X86_FEATURE_SSE4_2      (4*32+20) /* Streaming SIMD Extensions 4.2 */
>#define X86_FEATURE_X2APIC      (4*32+21) /* Extended xAPIC */
>#define X86_FEATURE_POPCNT      (4*32+23) /* POPCNT instruction */
>#define X86_FEATURE_XSAVE       (4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */
>#define X86_FEATURE_HYPERVISOR  (4*32+31) /* Running under some hypervisor */
>
>/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
>#define X86_FEATURE_XSTORE      (5*32+ 2) /* on-CPU RNG present (xstore insn) */
>#define X86_FEATURE_XSTORE_EN   (5*32+ 3) /* on-CPU RNG enabled */
>#define X86_FEATURE_XCRYPT      (5*32+ 6) /* on-CPU crypto (xcrypt insn) */
>#define X86_FEATURE_XCRYPT_EN   (5*32+ 7) /* on-CPU crypto enabled */
>#define X86_FEATURE_ACE2        (5*32+ 8) /* Advanced Cryptography Engine v2 */
>#define X86_FEATURE_ACE2_EN     (5*32+ 9) /* ACE v2 enabled */
>#define X86_FEATURE_PHE         (5*32+ 10) /* PadLock Hash Engine */
>#define X86_FEATURE_PHE_EN      (5*32+ 11) /* PHE enabled */
>#define X86_FEATURE_PMM         (5*32+ 12) /* PadLock Montgomery Multiplier */
>#define X86_FEATURE_PMM_EN      (5*32+ 13) /* PMM enabled */
>
>/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
>#define X86_FEATURE_LAHF_LM     (6*32+ 0) /* LAHF/SAHF in long mode */
>#define X86_FEATURE_CMP_LEGACY  (6*32+ 1) /* If yes HyperThreading not valid */
>#define X86_FEATURE_SVME        (6*32+ 2) /* Secure Virtual Machine */
>#define X86_FEATURE_EXTAPICSPACE (6*32+ 3) /* Extended APIC space */
>#define X86_FEATURE_ALTMOVCR    (6*32+ 4) /* LOCK MOV CR accesses CR+8 */
>#define X86_FEATURE_ABM         (6*32+ 5) /* Advanced Bit Manipulation */
>#define X86_FEATURE_SSE4A       (6*32+ 6) /* AMD Streaming SIMD Extensions-4a */
>#define X86_FEATURE_MISALIGNSSE (6*32+ 7) /* Misaligned SSE Access */
>#define X86_FEATURE_3DNOWPF     (6*32+ 8) /* 3DNow! Prefetch */
>#define X86_FEATURE_OSVW        (6*32+ 9) /* OS Visible Workaround */
>#define X86_FEATURE_IBS         (6*32+ 10) /* Instruction Based Sampling */
>#define X86_FEATURE_SSE5        (6*32+ 11) /* AMD Streaming SIMD Extensions-5 */
>#define X86_FEATURE_SKINIT      (6*32+ 12) /* SKINIT, STGI/CLGI, DEV */
>#define X86_FEATURE_WDT         (6*32+ 13) /* Watchdog Timer */
>"""
>RE_HEADER = re.compile('^#define X86_FEATURE_([A-Z0-9_]+) +\(([0-9]+)\*32\+ ?([0-9]+)\) /\* (.+) \*/')
>header = []
>for line in HEADER.splitlines():
>	m = RE_HEADER.match(line)
>	if not m:
>		continue
>	name, group, bit, desc = m.groups()
>	header.append((int(group), int(bit), name, desc))
>
>while True:
>	line = sys.stdin.readline()
>	if not line:
>		break
>	groups = map(lambda i: int(i, 16), line.split(':'))
>	for group, bit, name, desc in header:
>		if groups[group] & (1 << bit) > 0:
>			print "%1d.%2d: %20s %s" % (group, bit, name, desc)

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Attachments on bug 21386: 3000