Avi Kivity wrote:
> This should really be in the kernel, but there are too many of them.
Nice (and said as my host cpu has so many 'no').
>
> Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
> ---
> kvm/scripts/vmxcap | 151 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 151 insertions(+), 0 deletions(-)
> create mode 100755 kvm/scripts/vmxcap
>
> diff --git a/kvm/scripts/vmxcap b/kvm/scripts/vmxcap
> new file mode 100755
> index 0000000..ff22d8c
> --- /dev/null
> +++ b/kvm/scripts/vmxcap
> @@ -0,0 +1,151 @@
> +#!/usr/bin/python
> +
> +MSR_IA32_VMX_BASIC = 0x480
> +MSR_IA32_VMX_PINBASED_CTLS = 0x481
> +MSR_IA32_VMX_PROCBASED_CTLS = 0x482
> +MSR_IA32_VMX_EXIT_CTLS = 0x483
> +MSR_IA32_VMX_ENTRY_CTLS = 0x484
> +MSR_IA32_VMX_MISC_CTLS = 0x485
> +MSR_IA32_VMX_PROCBASED_CTLS2 = 0x48B
> +MSR_IA32_VMX_TRUE_PINBASED_CTLS = 0x48D
> +MSR_IA32_VMX_TRUE_PROCBASED_CTLS = 0x48E
> +MSR_IA32_VMX_TRUE_EXIT_CTLS = 0x48F
> +MSR_IA32_VMX_TRUE_ENTRY_CTLS = 0x490
> +
> +class msr(object):
> + def __init__(self):
> + self.f = file('/dev/msr0')
For me this is /dev/cpu/0/msr.
Maybe:
try:
self.f = file('/dev/msr0')
except:
self.f = file('/dev/cpu/0/msr')
Jan
> + def read(self, index, default = None):
> + import struct
> + self.f.seek(index)
> + try:
> + return struct.unpack('Q', self.f.read(8))[0]
> + except:
> + return default
> +
> +class Control(object):
> + def __init__(self, name, bits, cap_msr, true_cap_msr = None):
> + self.name = name
> + self.bits = bits
> + self.cap_msr = cap_msr
> + self.true_cap_msr = true_cap_msr
> + def read2(self, nr):
> + m = msr()
> + val = m.read(nr, 0)
> + return (val & 0xffffffff, val >> 32)
> + def show(self):
> + print self.name
> + mbz, mb1 = self.read2(self.cap_msr)
> + tmbz, tmb1 = 0, 0
> + if self.true_cap_msr:
> + tmbz, tmb1 = self.read2(self.true_cap_msr)
> + for bit in sorted(self.bits.keys()):
> + zero = not (mbz & (1 << bit))
> + one = mb1 & (1 << bit)
> + true_zero = not (tmbz & (1 << bit))
> + true_one = tmb1 & (1 << bit)
> + s= '?'
> + if (self.true_cap_msr and true_zero and true_one
> + and one and not zero):
> + s = 'default'
> + elif zero and not one:
> + s = 'no'
> + elif one and not zero:
> + s = 'forced'
> + elif one and zero:
> + s = 'yes'
> + print ' %-40s %s' % (self.bits[bit], s)
> +
> +controls = [
> + Control(
> + name = 'pin-based controls',
> + bits = {
> + 0: 'External interrupt exiting',
> + 3: 'NMI exiting',
> + 5: 'Virtual NMIs',
> + 6: 'Activate VMX-preemption timer',
> + 7: 'Unrestricted guest',
> + },
> + cap_msr = MSR_IA32_VMX_PINBASED_CTLS,
> + true_cap_msr = MSR_IA32_VMX_TRUE_PINBASED_CTLS,
> + ),
> +
> + Control(
> + name = 'primary processor-based controls',
> + bits = {
> + 2: 'Interrupt window exiting',
> + 3: 'Use TSC offsetting',
> + 7: 'HLT exiting',
> + 9: 'INVLPG exiting',
> + 10: 'MWAIT exiting',
> + 11: 'RDPMC exiting',
> + 12: 'RDTSC exiting',
> + 15: 'CR3-load exiting',
> + 16: 'CR3-store exiting',
> + 19: 'CR8-load exiting',
> + 20: 'CR8-store exiting',
> + 21: 'Use TPR shadow',
> + 22: 'NMI-window exiting',
> + 23: 'MOV-DR exiting',
> + 24: 'Unconditional I/O exiting',
> + 25: 'Use I/O bitmaps',
> + 27: 'Monitor trap flag',
> + 28: 'Use MSR bitmaps',
> + 29: 'MONITOR exiting',
> + 30: 'PAUSE exiting',
> + 31: 'Activate secondary control',
> + },
> + cap_msr = MSR_IA32_VMX_PROCBASED_CTLS,
> + true_cap_msr = MSR_IA32_VMX_TRUE_PROCBASED_CTLS,
> + ),
> +
> + Control(
> + name = 'secondary processor-based controls',
> + bits = {
> + 0: 'Virtualize APIC accesses',
> + 1: 'Enable EPT',
> + 2: 'Descriptor-table exiting',
> + 4: 'Virtualize x2APIC mode',
> + 5: 'Enable VPID',
> + 6: 'WBINVD exiting',
> + },
> + cap_msr = MSR_IA32_VMX_PROCBASED_CTLS2,
> + ),
> +
> + Control(
> + name = 'VM-Exit controls',
> + bits = {
> + 2: 'Save debug controls',
> + 9: 'Host address-space size',
> + 12: 'Load IA32_PERF_GLOBAL_CTRL',
> + 15: 'Acknowledge interrupt on exit',
> + 18: 'Save IA32_PAT',
> + 19: 'Load IA32_PAT',
> + 20: 'Save IA32_EFER',
> + 21: 'Load IA32_EFER',
> + 22: 'Save VMX-preemption timer value',
> + },
> + cap_msr = MSR_IA32_VMX_EXIT_CTLS,
> + true_cap_msr = MSR_IA32_VMX_TRUE_EXIT_CTLS,
> + ),
> +
> + Control(
> + name = 'VM-Entry controls',
> + bits = {
> + 2: 'Load debug controls',
> + 9: 'IA-64 mode guest',
> + 10: 'Entry to SMM',
> + 11: 'Deactivate dual-monitor treatment',
> + 13: 'Load IA32_PERF_GLOBAL_CTRL',
> + 14: 'Load IA32_PAT',
> + 15: 'Load IA32_EFER',
> + },
> + cap_msr = MSR_IA32_VMX_ENTRY_CTLS,
> + true_cap_msr = MSR_IA32_VMX_TRUE_ENTRY_CTLS,
> + ),
> + ]
> +
> +for c in controls:
> + c.show()
> +
> +
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
