def test_hardware_pstates(ratio_to_control_value):
IA32_PERF_CTL = 0x199
with bits.mwait.use_hint(), bits.preserve_msr(IA32_PERF_CTL):
MSR_PLATFORM_INFO = 0xce
min_ratio = testmsr.MSR("maximum efficiency ratio",
bits.bsp_apicid(),
MSR_PLATFORM_INFO,
highbit=47,
lowbit=40)[0]
max_ratio = testmsr.MSR("max non-turbo ratio",
bits.bsp_apicid(),
MSR_PLATFORM_INFO,
highbit=15,
lowbit=8)[0]
# Get the Turbo Mode Availability flag
turbo_mode_available = bits.cpuid(bits.bsp_apicid(), 0).eax >= 6 and (
bits.cpuid(bits.bsp_apicid(), 6).eax & 0x2)
last_ratio = max_ratio
if turbo_mode_available:
last_ratio += 1
bclk = testutil.adjust_to_nearest(bits.bclk(), 100.0 / 12) * 1000000
for ratio in range(min_ratio, last_ratio + 1):
control_value = ratio_to_control_value(ratio, min_ratio, max_ratio)
for apicid in bits.cpus():
bits.wrmsr(apicid, IA32_PERF_CTL, control_value)
turbo = (ratio == max_ratio + 1)
if turbo:
# Needs to busywait, not sleep
start = time.time()
while (time.time() - start < 2):
pass
expected = int(ratio * bclk / 1000000)
for duration in (0.1, 1.0):
aperf = bits.cpu_frequency(duration)[1]
aperf = testutil.adjust_to_nearest(aperf, bclk / 2)
aperf = int(aperf / 1000000)
if turbo:
if aperf >= expected:
break
else:
if aperf == expected:
break
if turbo:
testsuite.test(
"Turbo measured frequency {} >= expected {} MHz".format(
aperf, expected), aperf >= expected)
else:
testsuite.test(
"Ratio {} measured frequency {} MHz == expected {} MHz".
format(ratio, aperf, expected), aperf == expected)
def test_hardware_pstates(ratio_to_control_value):
old_mwait = {}
try:
MSR_PLATFORM_INFO = 0xce
IA32_PERF_CTL = 0x199
min_ratio = testmsr.MSR("maximum efficiency ratio", bits.bsp_apicid(), MSR_PLATFORM_INFO, highbit=47, lowbit=40)[0]
max_ratio = testmsr.MSR("max non-turbo ratio", bits.bsp_apicid(), MSR_PLATFORM_INFO, highbit=15, lowbit=8)[0]
# Get the Turbo Mode Availability flag
turbo_mode_available = bits.cpuid(bits.bsp_apicid(),0).eax >= 6 and (bits.cpuid(bits.bsp_apicid(),6).eax & 0x2)
last_ratio = max_ratio
if turbo_mode_available:
last_ratio += 1
duration = last_ratio - min_ratio + 1
if turbo_mode_available:
duration += 2
print "Test duration is ~{} seconds...".format(duration)
# Force use of MWAIT C3
hint = 0x20
cpus = bits.cpus()
for apicid in cpus:
old_mwait[apicid] = bits.get_mwait(apicid)
bits.set_mwait(apicid, True, hint)
bclk = testutil.adjust_to_nearest(bits.bclk(), 100.0/12) * 1000000
for ratio in range(min_ratio, last_ratio + 1):
control_value = ratio_to_control_value(ratio, min_ratio, max_ratio)
for apicid in cpus:
bits.wrmsr(apicid, IA32_PERF_CTL, control_value)
if ratio == max_ratio + 1:
# Needs to busywait, not sleep
start = time.time()
while (time.time() - start < 2):
pass
aperf = bits.cpu_frequency()[1]
aperf = testutil.adjust_to_nearest(aperf, bclk/2)
aperf = int(aperf / 1000000)
expected = int(ratio * bclk / 1000000)
if ratio == max_ratio + 1:
testsuite.test("Turbo measured frequency {} >= expected {} MHz".format(aperf, expected), aperf >= expected)
else:
testsuite.test("Ratio {} measured frequency {} MHz == expected {} MHz".format(ratio, aperf, expected), aperf == expected)
finally:
for apicid, old_mwait_values in old_mwait.iteritems():
bits.set_mwait(apicid, *old_mwait_values)
def show_autodemotion():
with ttypager.page():
if bitfields.getbits(bits.rdmsr(bits.bsp_apicid(), 0xe2), 26,
25) == 0x3:
print("C1 and C3 autodemotion are enabled")
else:
print("C1 and C3 autodemotion are disabled")
def variable_mtrrs(apicid=bits.bsp_apicid()):
assert apicid in bits.cpus()
ia32_mtrrcap_msr = IA32_MTRRCAP( bits.rdmsr(apicid, IA32_MTRRCAP_REG) )
ia32_mtrr_def_type_msr = IA32_MTRR_DEF_TYPE(bits.rdmsr(apicid, IA32_MTRR_DEF_TYPE_REG))
with ttypager.page():
print("Summary:")
print("Default memory type: {}".format(_memory_type_str(ia32_mtrr_def_type_msr.type)))
for i in range(ia32_mtrrcap_msr.VCNT):
ia32_mtrr_physbase_msr = IA32_MTRR_PHYSBASE(bits.rdmsr(apicid, IA32_MTRR_PHYSBASEn_REG(i)))
ia32_mtrr_physmask_msr = IA32_MTRR_PHYSMASK(bits.rdmsr(apicid, IA32_MTRR_PHYSMASKn_REG(i)))
if (ia32_mtrr_physmask_msr.V):
print("MTRR{}: type={:20} base={:10} size={:10}".format(i, _memory_type_str(ia32_mtrr_physbase_msr.Type), _physbase_str(ia32_mtrr_physbase_msr.PhysBase), _physmask_str(ia32_mtrr_physmask_msr.PhysMask)))
print()
print(ia32_mtrrcap_msr, end='\n\n')
print(ia32_mtrr_def_type_msr, end='\n\n')
for i in range(ia32_mtrrcap_msr.VCNT):
msr_num = IA32_MTRR_PHYSBASEn_REG(i)
ia32_mtrr_physbase_msr = IA32_MTRR_PHYSBASE( bits.rdmsr(apicid, msr_num) )
print("IA32_MTRR_PHYSBASE[{}] MSR {:#x}".format(i, msr_num))
print(ia32_mtrr_physbase_msr, end='\n\n')
msr_num = IA32_MTRR_PHYSMASKn_REG(i)
ia32_mtrr_physmask_msr = IA32_MTRR_PHYSMASK( bits.rdmsr(apicid, msr_num) )
print("IA32_MTRR_PHYSMASK[{}] MSR {:#x}".format(i, msr_num))
print(ia32_mtrr_physmask_msr, end='\n\n')
def residency(residency_counters, residency_counter_msr, sleep_time=3):
bsp_apicid = bits.bsp_apicid()
sockets = dict(
(skt_index, min(apic_list))
for skt_index, apic_list in bits.socket_apic_ids().iteritems())
rc = {}
rc_start = {}
delta = {}
def read_rc(apic_id):
return residency_counters(*(bits.rdmsr(apic_id, msr)
for msr in residency_counter_msr))
tsc = bits.rdmsr(bsp_apicid, 0x10)
for apic_id in sockets.itervalues():
rc_start[apic_id] = read_rc(apic_id)
bits.blocking_sleep(sleep_time * 1000 * 1000)
tsc = float(bits.rdmsr(bsp_apicid, 0x10) - tsc)
for apic_id in sockets.itervalues():
rc[apic_id] = read_rc(apic_id)
for apic_id in sockets.itervalues():
delta[apic_id] = residency_counters(
*((end - start) / tsc
for end, start in zip(rc[apic_id], rc_start[apic_id])))
return delta
def power_opt_low_power_profile():
# If CPUID.06H:ECX.SETBH[bit 3] is set, then the processor supports
# performance-energy bias preference and IA32_ENERGY_PERF_BIAS (1B0H) MSR
setbh = (bits.cpuid(bits.bsp_apicid(),6).ecx >> 3) & 1
if not setbh:
return
testmsr.test_msr_consistency("Energy Performance Bias", 0x1b0, mask=0xf)
testmsr.test_msr("Energy Performance Bias 12-15", 0x1b0, expected_value=3, shift=2, mask=3)
def turbo_msr(ratio, min_ratio, max_ratio):
MSR_TURBO_RATIO_LIMIT = 0x1ad
if ratio > max_ratio:
ratio = testmsr.MSR("turbo ratio",
bits.bsp_apicid(),
MSR_TURBO_RATIO_LIMIT,
highbit=7,
lowbit=0)[0]
return ratio << 8
def test_hardware_pstates(ratio_to_control_value):
IA32_PERF_CTL = 0x199
with bits.mwait.use_hint(), bits.preserve_msr(IA32_PERF_CTL):
MSR_PLATFORM_INFO = 0xce
min_ratio = testmsr.MSR("maximum efficiency ratio", bits.bsp_apicid(), MSR_PLATFORM_INFO, highbit=47, lowbit=40)[0]
max_ratio = testmsr.MSR("max non-turbo ratio", bits.bsp_apicid(), MSR_PLATFORM_INFO, highbit=15, lowbit=8)[0]
# Get the Turbo Mode Availability flag
turbo_mode_available = bits.cpuid(bits.bsp_apicid(),0).eax >= 6 and (bits.cpuid(bits.bsp_apicid(),6).eax & 0x2)
last_ratio = max_ratio
if turbo_mode_available:
last_ratio += 1
bclk = testutil.adjust_to_nearest(bits.bclk(), 100.0/12) * 1000000
for ratio in range(min_ratio, last_ratio + 1):
control_value = ratio_to_control_value(ratio, min_ratio, max_ratio)
for apicid in bits.cpus():
bits.wrmsr(apicid, IA32_PERF_CTL, control_value)
turbo = (ratio == max_ratio + 1)
if turbo:
# Needs to busywait, not sleep
start = time.time()
while (time.time() - start < 2):
pass
expected = int(ratio * bclk / 1000000)
for duration in (0.1, 1.0):
aperf = bits.cpu_frequency(duration)[1]
aperf = testutil.adjust_to_nearest(aperf, bclk/2)
aperf = int(aperf / 1000000)
if turbo:
if aperf >= expected:
break
else:
if aperf == expected:
break
if turbo:
testsuite.test("Turbo measured frequency {} >= expected {} MHz".format(aperf, expected), aperf >= expected)
else:
testsuite.test("Ratio {} measured frequency {} MHz == expected {} MHz".format(ratio, aperf, expected), aperf == expected)
def toggle_autodemotion():
value = bits.rdmsr(bits.bsp_apicid(), 0xe2)
if bitfields.getbits(value, 26, 25) == 0x3:
fieldvalue = 0
else:
fieldvalue = 0x3
value = bitfields.setbits(value, fieldvalue, 26, 25)
for cpu in bits.cpus():
bits.wrmsr(cpu, 0xe2, value)
show_autodemotion()
def toggle_autodemotion():
value = bits.rdmsr(bits.bsp_apicid(), 0xe2)
if bitfields.getbits(value, 26, 25) == 0x3:
fieldvalue = 0
else:
fieldvalue = 0x3
value = bitfields.setbits(value, fieldvalue, 26, 25)
for cpu in bits.cpus():
bits.wrmsr(cpu, 0xe2, value)
show_autodemotion()
def max_phys_addr():
"""Return the max physical address width, in bits.
Computed on first call, and cached for subsequent return."""
global max_phys_addr
max_extended_leaf = bits.cpuid(bits.bsp_apicid(), 0x80000000).eax
if max_extended_leaf >= 0x80000008:
# cpuid.(eax=0x80000008).eax[7:0] = max physical-address width supported by the processor
local_max_phys_addr = bitfields.getbits(bits.cpuid(bits.bsp_apicid(), 0x80000008).eax, 7, 0)
elif bitfields.getbits(bits.cpuid(bits.bsp_apicid(), 1).edx, 6): # PAE supported
local_max_phys_addr = 36
else:
local_max_phys_addr = 32
old_func = max_phys_addr
def max_phys_addr():
return local_max_phys_addr
functools.update_wrapper(max_phys_addr, old_func)
return local_max_phys_addr
def test_pm_generic_profile():
testmsr.test_msr_consistency("Max non-turbo ratio must be consistent",
0xce,
mask=0xff00)
testpci.test_pci("Bus master disable",
0,
31,
0,
0xa9,
bytes=1,
shift=2,
mask=1,
expected_value=1)
testmsr.test_msr("C1 Auto Undemotion Enable",
0xe2,
shift=28,
mask=1,
expected_value=1)
testmsr.test_msr("C3 Auto Undemotion Enable",
0xe2,
shift=27,
mask=1,
expected_value=1)
testmsr.test_msr("C1 Auto Demotion Enable",
0xe2,
shift=26,
mask=1,
expected_value=1)
testmsr.test_msr("C3 Auto Demotion Enable",
0xe2,
shift=25,
mask=1,
expected_value=1)
testmsr.test_msr("IO MWAIT Redirection Enable",
0xe2,
shift=10,
mask=1,
expected_value=1)
testmsr.test_msr("C1E Enable", 0x1fc, shift=1, mask=1, expected_value=1)
testmsr.test_msr("EIST Enable", 0x1a0, shift=16, mask=1, expected_value=1)
testmsr.test_msr("Turbo Enable", 0x1a0, shift=38, mask=1, expected_value=0)
testmsr.test_msr("EIST Hardware Coordination Enable",
0x1aa,
mask=1,
expected_value=0)
testmsr.test_msr_consistency("IO Capture C-state Range Consistent",
0xe4,
shift=16,
mask=7)
io_capture_range, io_capture_range_str = testmsr.MSR(
"IO Capture C-state Range", bits.bsp_apicid(), 0xe4, 18, 16)
testsuite.test("IO Capture C-state Range <= 2", io_capture_range <= 2)
testsuite.print_detail(io_capture_range_str)
def power_opt_low_power_profile():
# If CPUID.06H:ECX.SETBH[bit 3] is set, then the processor supports
# performance-energy bias preference and IA32_ENERGY_PERF_BIAS (1B0H) MSR
setbh = (bits.cpuid(bits.bsp_apicid(), 6).ecx >> 3) & 1
if not setbh:
return
testmsr.test_msr_consistency("Energy Performance Bias", 0x1b0, mask=0xf)
testmsr.test_msr("Energy Performance Bias 12-15",
0x1b0,
expected_value=3,
shift=2,
mask=3)
def test_pm_generic_profile():
testmsr.test_msr_consistency("Max non-turbo ratio must be consistent", 0xce, mask=0xff00)
testpci.test_pci("Bus master disable", 0, 31, 0, 0xa9, bytes=1, shift=2, mask=1, expected_value=1)
testmsr.test_msr("C1 Auto Demotion Enable", 0xe2, shift=26, mask=1, expected_value=1)
testmsr.test_msr("C3 Auto Demotion Enable", 0xe2, shift=25, mask=1, expected_value=1)
testmsr.test_msr("IO MWAIT Redirection Enable", 0xe2, shift=10, mask=1, expected_value=1)
testmsr.test_msr("C1E Enable", 0x1fc, shift=1, mask=1, expected_value=1)
testmsr.test_msr("EIST Enable", 0x1a0, shift=16, mask=1, expected_value=1)
testmsr.test_msr("Turbo Enable", 0x1a0, shift=38, mask=1, expected_value=0)
testmsr.test_msr("EIST Hardware Coordination Enable", 0x1aa, mask=1, expected_value=0)
testmsr.test_msr_consistency("IO Capture C-state Range Consistent", 0xe4, shift=16, mask=7)
io_capture_range, io_capture_range_str = testmsr.MSR("IO Capture C-state Range", bits.bsp_apicid(), 0xe4, 18, 16)
testsuite.test("IO Capture C-state Range <= 2", io_capture_range <= 2)
testsuite.print_detail(io_capture_range_str)
def residency(residency_counters, residency_counter_msr, sleep_time=3):
bsp_apicid = bits.bsp_apicid()
sockets = dict((skt_index, min(apic_list)) for skt_index, apic_list in bits.socket_apic_ids().iteritems())
rc = {}
rc_start = {}
delta = {}
def read_rc(apic_id):
return residency_counters(*(bits.rdmsr(apic_id, msr) for msr in residency_counter_msr))
tsc = bits.rdmsr(bsp_apicid, 0x10)
for apic_id in sockets.itervalues():
rc_start[apic_id] = read_rc(apic_id)
bits.blocking_sleep(sleep_time*1000*1000)
tsc = float(bits.rdmsr(bsp_apicid, 0x10) - tsc)
for apic_id in sockets.itervalues():
rc[apic_id] = read_rc(apic_id)
for apic_id in sockets.itervalues():
delta[apic_id] = residency_counters(*((end - start) / tsc for end, start in zip(rc[apic_id], rc_start[apic_id])))
return delta
def is_cpu():
return bits.cpuid(bits.bsp_apicid(), 1).eax & ~0xf == 0x106c0
def is_cpu():
return bits.cpuid(bits.bsp_apicid(), 1).eax & ~0xF == 0x206D0
def turbo_msr(ratio, min_ratio, max_ratio):
MSR_TURBO_RATIO_LIMIT = 0x1ad
if ratio > max_ratio:
ratio = testmsr.MSR("turbo ratio", bits.bsp_apicid(), MSR_TURBO_RATIO_LIMIT, highbit=7, lowbit=0)[0]
return ratio << 8
def smi_latency():
IA32_TSC_MSR = 0x10
MSR_SMI_COUNT = 0x34
bsp_apicid = bits.bsp_apicid()
if bits.rdmsr(bsp_apicid, IA32_TSC_MSR) is None:
raise RuntimeError("Reading of IA32_TSC MSR caused a GPF")
print "Warning: touching the keyboard can affect the results of this test."
print "Starting pass #1. Calibrating the TSC."
start = time.time()
tsc1 = bits.rdmsr(bsp_apicid, IA32_TSC_MSR)
while time.time() - start < 1:
pass
stop = time.time()
tsc2 = bits.rdmsr(bsp_apicid, IA32_TSC_MSR)
tsc_per_sec = (tsc2 - tsc1) / (stop - start)
tsc_per_usec = tsc_per_sec / (1000*1000)
def show_time(tscs):
units = [(1000*1000*1000, "ns"), (1000*1000, "us"), (1000, "ms")]
for divisor, unit in units:
temp = tscs / (tsc_per_sec / divisor)
if temp < 10000:
return "{}{}".format(int(temp), unit)
return "{}s".format(int(tscs / tsc_per_sec))
bins = [long(tsc_per_usec * 10**i) for i in range(9)]
bin_descs = [
"0 < t <= 1us",
"1us < t <= 10us",
"10us < t <= 100us",
"100us < t <= 1ms",
"1ms < t <= 10ms",
"10ms < t <= 100ms",
"100ms < t <= 1s ",
"1s < t <= 10s ",
"10s < t <= 100s ",
"100s < t ",
]
print "Starting pass #2. Wait here, I will be back in 15 seconds."
(max_latency, smi_count_delta, bins) = bits.smi_latency(long(15 * tsc_per_sec), bins)
BinType = namedtuple('BinType', ("max", "total", "count", "times"))
bins = [BinType(*b) for b in bins]
testsuite.test("SMI latency < 150us to minimize risk of OS timeouts", max_latency / tsc_per_usec <= 150)
if not testsuite.show_detail():
return
for bin, desc in zip(bins, bin_descs):
if bin.count == 0:
continue
testsuite.print_detail("{}; average = {}; count = {}".format(desc, show_time(bin.total/bin.count), bin.count))
deltas = (show_time(t2 - t1) for t1,t2 in zip(bin.times, bin.times[1:]))
testsuite.print_detail(" Times between first few observations: {}".format(" ".join("{:>6}".format(delta) for delta in deltas)))
if smi_count_delta is not None:
testsuite.print_detail("{} SMI detected using MSR_SMI_COUNT (MSR {:#x})".format(smi_count_delta, MSR_SMI_COUNT))
testsuite.print_detail("Summary of impact: observed maximum latency = {}".format(show_time(max_latency)))
def log_sysinfo():
with redirect.logonly():
signature = bits.cpuid(bits.bsp_apicid(), 1).eax
print "Processor signature {:#x}, detected CPU as {}".format(
signature, cpulib.name)
def _display_apicid(apicid):
"""Format APIC IDs to display in hex. Indicate if the APIC ID is the BSP APIC ID"""
s = '{:#x}'.format(apicid)
if apicid == bits.bsp_apicid():
return s + ' (BSP)'
return s
def _apickey(apicid):
"""Key function to sort the BSP APIC ID first."""
if apicid == bits.bsp_apicid():
return -1
return apicid
def generate_mwait_menu():
global created_mwait_menu
global supported_mwaits_msg
if created_mwait_menu:
return
cfg = ""
cfg += 'menuentry "Test round-trip latency via MWAIT" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.test_latency()'\n"
cfg += '}\n\n'
cfg += 'menuentry "MWAIT disable" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.mwait_callback(False)'\n"
cfg += '}\n\n'
cfg += 'menuentry "MWAIT enable C0" {\n'
cfg += """ py 'import mwaitmenu; mwaitmenu.mwait_callback(True, "C0", 0xf)'\n"""
cfg += '}\n\n'
edx = 0
if bits.cpuid(bits.bsp_apicid(), 0).eax >= 5:
edx = bits.cpuid(bits.bsp_apicid(), 5).edx
mwait_table = (
("C1", 0, 4, 1),
("C1E", 1, 4, 2),
("*C2", 0x10, 8, 1),
("*C3", 0x20, 12, 1),
("*C4", 0x30, 16, 1),
("*C5", 0x40, 20, 1),
("*C6", 0x50, 24, 1),
)
supported_mwaits_msg = ""
for name, hint, shift, n in mwait_table:
if ((edx >> shift) & 0xf) >= n:
cfg += 'menuentry "MWAIT enable {}" {{\n'.format(name)
cfg += """ py 'import mwaitmenu; mwaitmenu.mwait_callback(True, "{}", {})'\n""".format(
name, hint)
cfg += '}\n\n'
supported_mwaits_msg += "MWAIT {} is supported\n".format(name)
else:
supported_mwaits_msg += "MWAIT {} is not supported\n".format(name)
supported_mwaits_msg += "For more information, see the Intel Software Developers Manual, CPUID leaf 5\n"
cfg += 'menuentry "* MWAIT C-state naming is per CPUID leaf 5 & not processor-specific!" {'
cfg += " py 'import mwaitmenu; mwaitmenu.show_supported_mwaits()'\n"
cfg += '}\n\n'
cfg += 'menuentry "Current state of Interrupt Break Event" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.show_interrupt_break_event()'\n"
cfg += '}\n\n'
cfg += 'menuentry "Toggle Interrupt Break Event" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.toggle_interrupt_break_event()'\n"
cfg += '}\n\n'
try:
cfg += cpulib.generate_mwait_menu()
except AttributeError as e:
pass
bits.pyfs.add_static("mwaitmenu.cfg", cfg)
created_mwait_menu = True
def generate_mwait_menu():
global created_mwait_menu
global supported_mwaits_msg
if created_mwait_menu:
return
cfg = ""
cfg += 'menuentry "Test round-trip latency via MWAIT" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.test_latency()'\n"
cfg += '}\n\n'
cfg += 'menuentry "MWAIT disable" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.mwait_callback(False)'\n"
cfg += '}\n\n'
cfg += 'menuentry "MWAIT enable C0" {\n'
cfg += """ py 'import mwaitmenu; mwaitmenu.mwait_callback(True, "C0", 0xf)'\n"""
cfg += '}\n\n'
edx = 0
if bits.cpuid(bits.bsp_apicid(), 0).eax >= 5:
edx = bits.cpuid(bits.bsp_apicid(), 5).edx
mwait_table = (
("C1", 0, 4, 1),
("C1E", 1, 4, 2),
("*C2", 0x10, 8, 1),
("*C3", 0x20, 12, 1),
("*C4", 0x30, 16, 1),
("*C5", 0x40, 20, 1),
("*C6", 0x50, 24, 1),
)
supported_mwaits_msg = ""
for name, hint, shift, n in mwait_table:
if ((edx >> shift) & 0xf) >= n:
cfg += 'menuentry "MWAIT enable {}" {{\n'.format(name)
cfg += """ py 'import mwaitmenu; mwaitmenu.mwait_callback(True, "{}", {})'\n""".format(name, hint)
cfg += '}\n\n'
supported_mwaits_msg += "MWAIT {} is supported\n".format(name)
else:
supported_mwaits_msg += "MWAIT {} is not supported\n".format(name)
supported_mwaits_msg += "For more information, see the Intel Software Developers Manual, CPUID leaf 5\n"
cfg += 'menuentry "* MWAIT C-state naming is per CPUID leaf 5 & not processor-specific!" {'
cfg += " py 'import mwaitmenu; mwaitmenu.show_supported_mwaits()'\n"
cfg += '}\n\n'
cfg += 'menuentry "Current state of Interrupt Break Event" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.show_interrupt_break_event()'\n"
cfg += '}\n\n'
cfg += 'menuentry "Toggle Interrupt Break Event" {\n'
cfg += " py 'import mwaitmenu; mwaitmenu.toggle_interrupt_break_event()'\n"
cfg += '}\n\n'
try:
cfg += cpulib.generate_mwait_menu()
except AttributeError as e:
pass
bits.pyfs.add_static("mwaitmenu.cfg", cfg)
created_mwait_menu = True
def is_cpu():
return bits.cpuid(bits.bsp_apicid(),1).eax & ~0xf == 0x106c0
def _display_apicid(apicid):
"""Format APIC IDs to display in hex. Indicate if the APIC ID is the BSP APIC ID"""
s = '{:#x}'.format(apicid)
if apicid == bits.bsp_apicid():
return s + ' (BSP)'
return s
def _apickey(apicid):
"""Key function to sort the BSP APIC ID first."""
if apicid == bits.bsp_apicid():
return -1
return apicid
def log_sysinfo():
with redirect.logonly():
signature = bits.cpuid(bits.bsp_apicid(),1).eax
print "Processor signature {:#x}, detected CPU as {}".format(signature, cpulib.name)
def show_autodemotion():
with ttypager.page():
if bitfields.getbits(bits.rdmsr(bits.bsp_apicid(), 0xe2), 26, 25) == 0x3:
print("C1 and C3 autodemotion are enabled")
else:
print("C1 and C3 autodemotion are disabled")