3 # tool for querying VMX capabilities
5 # Copyright 2009-2010 Red Hat, Inc.
8 # Avi Kivity <avi@redhat.com>
10 # This work is licensed under the terms of the GNU GPL, version 2. See
11 # the COPYING file in the top-level directory.
13 MSR_IA32_VMX_BASIC
= 0x480
14 MSR_IA32_VMX_PINBASED_CTLS
= 0x481
15 MSR_IA32_VMX_PROCBASED_CTLS
= 0x482
16 MSR_IA32_VMX_EXIT_CTLS
= 0x483
17 MSR_IA32_VMX_ENTRY_CTLS
= 0x484
18 MSR_IA32_VMX_MISC_CTLS
= 0x485
19 MSR_IA32_VMX_PROCBASED_CTLS2
= 0x48B
20 MSR_IA32_VMX_EPT_VPID_CAP
= 0x48C
21 MSR_IA32_VMX_TRUE_PINBASED_CTLS
= 0x48D
22 MSR_IA32_VMX_TRUE_PROCBASED_CTLS
= 0x48E
23 MSR_IA32_VMX_TRUE_EXIT_CTLS
= 0x48F
24 MSR_IA32_VMX_TRUE_ENTRY_CTLS
= 0x490
25 MSR_IA32_VMX_VMFUNC
= 0x491
30 self
.f
= open('/dev/cpu/0/msr', 'r', 0)
32 self
.f
= open('/dev/msr0', 'r', 0)
33 def read(self
, index
, default
= None):
37 return struct
.unpack('Q', self
.f
.read(8))[0]
41 class Control(object):
42 def __init__(self
, name
, bits
, cap_msr
, true_cap_msr
= None):
45 self
.cap_msr
= cap_msr
46 self
.true_cap_msr
= true_cap_msr
50 return (val
& 0xffffffff, val
>> 32)
53 mbz
, mb1
= self
.read2(self
.cap_msr
)
56 tmbz
, tmb1
= self
.read2(self
.true_cap_msr
)
57 for bit
in sorted(self
.bits
.keys()):
58 zero
= not (mbz
& (1 << bit
))
59 one
= mb1
& (1 << bit
)
60 true_zero
= not (tmbz
& (1 << bit
))
61 true_one
= tmb1
& (1 << bit
)
63 if (self
.true_cap_msr
and true_zero
and true_one
64 and one
and not zero
):
66 elif zero
and not one
:
68 elif one
and not zero
:
72 print ' %-40s %s' % (self
.bits
[bit
], s
)
75 def __init__(self
, name
, bits
, msr
):
81 value
= msr().read(self
.msr
, 0)
83 if type(key
) is tuple:
87 for bits
in sorted(self
.bits
.keys(), key
= first_bit
):
88 if type(bits
) is tuple:
94 return { True: 'yes', False: 'no' }[x
]
95 v
= (value
>> lo
) & ((1 << (hi
- lo
+ 1)) - 1)
96 print ' %-40s %s' % (self
.bits
[bits
], fmt(v
))
100 name
= 'Basic VMX Information',
103 (32,44): 'VMCS size',
104 48: 'VMCS restricted to 32 bit addresses',
105 49: 'Dual-monitor support',
106 (50, 53): 'VMCS memory type',
107 54: 'INS/OUTS instruction information',
108 55: 'IA32_VMX_TRUE_*_CTLS support',
110 msr
= MSR_IA32_VMX_BASIC
,
113 name
= 'pin-based controls',
115 0: 'External interrupt exiting',
118 6: 'Activate VMX-preemption timer',
119 7: 'Process posted interrupts',
121 cap_msr
= MSR_IA32_VMX_PINBASED_CTLS
,
122 true_cap_msr
= MSR_IA32_VMX_TRUE_PINBASED_CTLS
,
126 name
= 'primary processor-based controls',
128 2: 'Interrupt window exiting',
129 3: 'Use TSC offsetting',
135 15: 'CR3-load exiting',
136 16: 'CR3-store exiting',
137 19: 'CR8-load exiting',
138 20: 'CR8-store exiting',
139 21: 'Use TPR shadow',
140 22: 'NMI-window exiting',
141 23: 'MOV-DR exiting',
142 24: 'Unconditional I/O exiting',
143 25: 'Use I/O bitmaps',
144 27: 'Monitor trap flag',
145 28: 'Use MSR bitmaps',
146 29: 'MONITOR exiting',
148 31: 'Activate secondary control',
150 cap_msr
= MSR_IA32_VMX_PROCBASED_CTLS
,
151 true_cap_msr
= MSR_IA32_VMX_TRUE_PROCBASED_CTLS
,
155 name
= 'secondary processor-based controls',
157 0: 'Virtualize APIC accesses',
159 2: 'Descriptor-table exiting',
161 4: 'Virtualize x2APIC mode',
164 7: 'Unrestricted guest',
165 8: 'APIC register emulation',
166 9: 'Virtual interrupt delivery',
167 10: 'PAUSE-loop exiting',
168 11: 'RDRAND exiting',
169 12: 'Enable INVPCID',
170 13: 'Enable VM functions',
172 cap_msr
= MSR_IA32_VMX_PROCBASED_CTLS2
,
176 name
= 'VM-Exit controls',
178 2: 'Save debug controls',
179 9: 'Host address-space size',
180 12: 'Load IA32_PERF_GLOBAL_CTRL',
181 15: 'Acknowledge interrupt on exit',
184 20: 'Save IA32_EFER',
185 21: 'Load IA32_EFER',
186 22: 'Save VMX-preemption timer value',
188 cap_msr
= MSR_IA32_VMX_EXIT_CTLS
,
189 true_cap_msr
= MSR_IA32_VMX_TRUE_EXIT_CTLS
,
193 name
= 'VM-Entry controls',
195 2: 'Load debug controls',
196 9: 'IA-64 mode guest',
198 11: 'Deactivate dual-monitor treatment',
199 13: 'Load IA32_PERF_GLOBAL_CTRL',
201 15: 'Load IA32_EFER',
203 cap_msr
= MSR_IA32_VMX_ENTRY_CTLS
,
204 true_cap_msr
= MSR_IA32_VMX_TRUE_ENTRY_CTLS
,
208 name
= 'Miscellaneous data',
210 (0,4): 'VMX-preemption timer scale (log2)',
211 5: 'Store EFER.LMA into IA-32e mode guest control',
212 6: 'HLT activity state',
213 7: 'Shutdown activity state',
214 8: 'Wait-for-SIPI activity state',
215 (16,24): 'Number of CR3-target values',
216 (25,27): 'MSR-load/store count recommenation',
217 28: 'IA32_SMM_MONITOR_CTL[2] can be set to 1',
218 (32,62): 'MSEG revision identifier',
220 msr
= MSR_IA32_VMX_MISC_CTLS
,
224 name
= 'VPID and EPT capabilities',
226 0: 'Execute-only EPT translations',
227 6: 'Page-walk length 4',
228 8: 'Paging-structure memory type UC',
229 14: 'Paging-structure memory type WB',
232 20: 'INVEPT supported',
233 21: 'EPT accessed and dirty flags',
234 25: 'Single-context INVEPT',
235 26: 'All-context INVEPT',
236 32: 'INVVPID supported',
237 40: 'Individual-address INVVPID',
238 41: 'Single-context INVVPID',
239 42: 'All-context INVVPID',
240 43: 'Single-context-retaining-globals INVVPID',
242 msr
= MSR_IA32_VMX_EPT_VPID_CAP
,
245 name
= 'VM Functions',
249 msr
= MSR_IA32_VMX_VMFUNC
,