Anton Kochkov ([email protected]) just uploaded a new patch set to 
gerrit, which you can find at http://review.coreboot.org/1171

-gerrit

commit d78a04d689ab55fd00b65473dc0d3dc5d5d5ba84
Author: Anton Kochkov <[email protected]>
Date:   Wed Jul 4 07:39:07 2012 +0400

    msrtool: Decoding for most of Intel Core 2 MSRs
    
    Added bits/bitfields descriptions and decoding values
    into intel_core2_later.c file, which describe
    MSRs for Intel processors, based on later Core 2
    architecture.
    
    Change-Id: If577c8ed944afe34f86944cc03a780fba6b3dbba
    Signed-off-by: Anton Kochkov <[email protected]>
---
 util/msrtool/intel_core2_later.c | 855 ++++++++++++++++++++++++++++++++++++---
 1 file changed, 808 insertions(+), 47 deletions(-)

diff --git a/util/msrtool/intel_core2_later.c b/util/msrtool/intel_core2_later.c
index 541907a..a8a2b2d 100644
--- a/util/msrtool/intel_core2_later.c
+++ b/util/msrtool/intel_core2_later.c
@@ -1,7 +1,7 @@
 /*
  * This file is part of msrtool.
  *
- * Copyright (C) 2011 Anton Kochkov <[email protected]>
+ * Copyright (C) 2013 Anton Kochkov <[email protected]>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -24,17 +24,32 @@ int intel_core2_later_probe(const struct targetdef *target, 
const struct cpuid_t
 }
 
 const struct msrdef intel_core2_later_msrs[] = {
-       {0x17, MSRTYPE_RDWR, MSR2(0,0), "IA32_PLATFORM_ID Register", "Model 
Specific Platform ID", {
+       {0x17, MSRTYPE_RDWR, MSR2(0,0), "IA32_PLATFORM_ID Register",
+                       "Model Specific Platform ID", {
+       /* The OS can use this MSR to determine "slot" information for the
+        * processor and the proper microcode update to load. */
                { 63, 11, RESERVED },
-               { 52, 3, RESERVED },
+               { 52, 3, "Platform ID", "R/O", PRESENT_BIN, {
+                       { MSR1(0), "Processor Flag 0" },
+                       { MSR1(1), "Processor Flag 1" },
+                       { MSR1(2), "Processor Flag 2" },
+                       { MSR1(3), "Processor Flag 3" },
+                       { MSR1(4), "Processor Flag 4" },
+                       { MSR1(5), "Processor Flag 5" },
+                       { MSR1(6), "Processor Flag 6" },
+                       { MSR1(7), "Processor Flag 7" },
+                       { BITVAL_EOT }
+               }},
                { 49, 37, RESERVED },
-               { 12, 5, "Maximum Qualified Ratio:", "The maximum allowed bus 
ratio", PRESENT_DEC, {
+               { 12, 5, "Maximum Qualified Ratio:", "The maximum allowed bus 
ratio",
+                               PRESENT_DEC, {
                        { BITVAL_EOT }
                }},
                { 7, 8, RESERVED },
                { BITS_EOT }
        }},
-       { 0x2a, MSRTYPE_RDWR, MSR2(0,0), "MSR_EBL_CR_POWERON Register", 
"Processor Hard Power-On Configuration", {
+       { 0x2a, MSRTYPE_RDWR, MSR2(0,0), "MSR_EBL_CR_POWERON Register",
+                       "Processor Hard Power-On Configuration", {
                { 63, 41, RESERVED },
                { 26, 5, "Integer Bus Frequency Ratio:", "R/O", PRESENT_DEC, {
                        { BITVAL_EOT }
@@ -112,37 +127,136 @@ const struct msrdef intel_core2_later_msrs[] = {
                { 0, 1, RESERVED },
                { BITS_EOT }
        }},
-       {0xcd, MSRTYPE_RDWR, MSR2(0,0), "MSR_FSB_FREQ", "", {
+       {0xcd, MSRTYPE_RDONLY, MSR2(0,0), "MSR_FSB_FREQ", "Scaleable Bus 
Speed", {
+       /* This field indicates the intended scaleable bus clock speed */
+               { 63, 61, RESERVED },
+               { 2, 3, "Speed", "R/O", PRESENT_BIN, {
+                       { MSR1(0), "267 MHz (FSB 1067)" },
+                       { MSR1(1), "133 MHz (FSB 533)" },
+                       { MSR1(2), "200 MHz (FSB 800)" },
+                       { MSR1(3), "167 MHz (FSB 667)" },
+                       { MSR1(4), "333 MHz (FSB 1333)" },
+                       { MSR1(5), "100 MHz (FSB 400)" },
+                       { MSR1(6), "400 MHz (FSB 1600)" },
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x11, MSRTYPE_RDWR, MSR2(0,0), "MSR_BBL_CR_CTL3", "", {
+       {0x11e, MSRTYPE_RDWR, MSR2(0,0), "MSR_BBL_CR_CTL3", "", {
+               { 63, 40, RESERVED },
+               { 23, 1, "L2 Present", "R/O", PRESENT_BIN, {
+                       { MSR1(0), "L2 Present" },
+                       { MSR1(1), "L2 Not Present" },
+                       { BITVAL_EOT }
+               }},
+               { 22, 14, RESERVED },
+               { 8, 1, "L2 Enabled", "R/W", PRESENT_BIN, {
+               /* Until this bit is set the processor will not respond
+                * to the WBINVD instruction or the assertion
+                * of the FLUSH# input. */
+                       { MSR1(0), "L2 is disabled" },
+                       { MSR1(1), "L2 cache has been initialized" },
+                       { BITVAL_EOT }
+               }},
+               { 7, 7, RESERVED},
+               { 0, 1, "L2 Hardware Enabled", "R/O", PRESENT_BIN, {
+                       { MSR1(0), "L2 is hardware-disabled" },
+                       { MSR1(1), "L2 is hardware-enabled" },
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
        {0x198, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_STATUS", "", {
                { BITS_EOT }
        }},
-       {0x1a0, MSRTYPE_RDWR, MSR2(0,0), "IA32_MISC_ENABLE", "", {
-               { BITS_EOT }
-       }},
 
        // Per core msrs
 
-       {0x0, MSRTYPE_RDWR, MSR2(0,0), "IA32_P5_MC_ADDR", "", {
+       {0x0, MSRTYPE_RDWR, MSR2(0,0), "IA32_P5_MC_ADDR", "Pentium Processor\
+                       Machine-Check Exception Address", {
                { BITS_EOT }
        }},
-       {0x1, MSRTYPE_RDWR, MSR2(0,0), "IA32_P5_MC_TYPE", "", {
+       {0x1, MSRTYPE_RDWR, MSR2(0,0), "IA32_P5_MC_TYPE", "Pentium Processor\
+                       Machine-Check Exception Type", {
                { BITS_EOT }
        }},
        {0x6, MSRTYPE_RDWR, MSR2(0,0), "IA32_MONITOR_FILTER_SIZE", "", {
                { BITS_EOT }
        }},
-       {0x10, MSRTYPE_RDWR, MSR2(0,0), "IA32_TIME_STEP_COUNTER", "", {
+       {0x10, MSRTYPE_RDWR, MSR2(0,0), "IA32_TIME_STEP_COUNTER", "TSC", {
                { BITS_EOT }
        }},
-       {0x1b, MSRTYPE_RDWR, MSR2(0,0), "IA32_APIC_BASE", "", {
+       {0x1b, MSRTYPE_RDWR, MSR2(0,0), "IA32_APIC_BASE", "APIC BASE", {
+               /* In Intel's manual there is MAXPHYWID,
+                * which determine index of highest bit of
+                * APIC Base itself, so marking it as
+                * 'RESERVED'.
+                */
+               { 63, 52, RESERVED },
+               { 11, 1, "APIC Global Enable", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 10, 1, RESERVED },
+               { 9, 1, RESERVED },
+               { 8, 1, "BSP Flag", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 7, 8, RESERVED },
                { BITS_EOT }
        }},
-       {0x3a, MSRTYPE_RDWR, MSR2(0,0), "IA32_FEATURE_CONTROL", "", {
+       {0x3a, MSRTYPE_RDWR, MSR2(0,0), "IA32_FEATURE_CONTROL",
+                       "Control features in Intel 64Processor", {
+               { 63, 48, RESERVED },
+               /* if CPUID.01H: ECX[6] = 1 */
+               { 15, 1, "SENTER Global Enable", "R/WL", PRESENT_BIN, {
+                       { MSR1(0), "SENTER leaf functions are disabled" },
+                       { MSR1(1), "SENTER leaf functions are enabled" },
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.01H: ECX[6] = 1 */
+               { 14, 7, "SENTER Local Function Enables", "R/WL", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 7, 4, RESERVED },
+               { 3, 1, "SMRR Enable", "R/WL", PRESENT_BIN, {
+                       { MSR1(0), "SMRR_PHYS_BASE and SMRR_PHYS_MASK are 
invisible in SMM" },
+                       { MSR1(1), "SMRR_PHYS_BASE and SMRR_PHYS_MASK 
accessible from SMM" },
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.01H: ECX[5 or 6] = 1 */
+               { 2, 1, "VMX outside of SMX operation", "R/WL", PRESENT_BIN, {
+                       /* This bit enables VMX for system executive
+                       * that do not require SMX.
+                       */
+                       { MSR1(0), "VMX outside of SMX operation disabled" },
+                       { MSR1(1), "VMX outside of SMX operation enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 1, 1, "VMX inside of SMX operation", "R/WL", PRESENT_BIN, {
+                       /* This bit enables a system executive to use
+                        * VMX in conjuction with SMX to support Intel
+                        * Trusted Execution Technology.
+                        */
+                       { MSR1(0), "VMX inside of SMX operation disabled" },
+                       { MSR1(1), "VMX outside of SMX operation enabled" },
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.01H: ECX[5 or 6] = 1 */
+               { 0, 1, "Lock bit", "R/WO", PRESENT_BIN, {
+                       /* Once the Lock bit is set, the contents
+                        * of this register cannot be modified.
+                        * Therefore the lock bit must be set after
+                        * configuring support for Intel Virtualization
+                        * Technology and prior transferring control
+                        * to an Option ROM or bootloader. Hence, once
+                        * the lock bit is set, the entire 
IA32_FEATURE_CONTROL_MSR
+                        * contents are preserved across RESET when
+                        * PWRGOOD it not deasserted.
+                        */
+                       { MSR1(0), "IA32_FEATURE_CONTROL MSR can be modified" },
+                       { MSR1(1), "IA32_FEATURE_CONTROL MSR cannot be 
modified" },
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
        {0x40, MSRTYPE_RDWR, MSR2(0,0), "MSR_LASTBRANCH_0_FROM_IP", "", {
@@ -169,10 +283,12 @@ const struct msrdef intel_core2_later_msrs[] = {
        {0x63, MSRTYPE_RDWR, MSR2(0,0), "MSR_LASTBRANCH_3_TO_LIP", "", {
                { BITS_EOT }
        }},
-       {0x79, MSRTYPE_RDWR, MSR2(0,0), "IA32_BIOS_UPDT_TRIG", "", {
+       {0x79, MSRTYPE_RDWR, MSR2(0,0), "IA32_BIOS_UPDT_TRIG",
+                       "BIOS Update Trigger Register (W)", {
                { BITS_EOT }
        }},
-       {0x8b, MSRTYPE_RDWR, MSR2(0,0), "IA32_BIOS_SIGN_ID", "", {
+       {0x8b, MSRTYPE_RDWR, MSR2(0,0), "IA32_BIOS_SIGN_ID",
+                       "BIOS Update Signature ID (RO)", {
                { BITS_EOT }
        }},
        {0xa0, MSRTYPE_RDWR, MSR2(0,0), "MSR_SMRR_PHYS_BASE", "", {
@@ -194,6 +310,11 @@ const struct msrdef intel_core2_later_msrs[] = {
                { BITS_EOT }
        }},
        {0xfe, MSRTYPE_RDWR, MSR2(0,0), "IA32_MTRRCAP", "", {
+               { 63, 52, RESERVED },
+               { 11, 1, "SMRR Capability Using MSR 0xa0 and 0xa1", "R/O", 
PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 10, 11, RESERVED },
                { BITS_EOT }
        }},
        {0x174, MSRTYPE_RDWR, MSR2(0,0), "IA32_SYSENTER_CS", "", {
@@ -209,12 +330,158 @@ const struct msrdef intel_core2_later_msrs[] = {
                { BITS_EOT }
        }},
        {0x17a, MSRTYPE_RDWR, MSR2(0,0), "IA32_MCG_STATUS", "", {
+               { 63, 61, RESERVED },
+               { 2, 1, "MCIP", "R/W", PRESENT_BIN, {
+                       /* When set, bit indicates that a machine check has been
+                        * generated. If a second machine check is detected 
while
+                        * this bit is still set, the processor enters a 
shutdown state.
+                        * Software should write this bit to 0 after processing
+                        * a machine check exception.
+                        */
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Machine check has been generated" },
+                       { BITVAL_EOT }
+               }},
+               { 1, 1, "EPIV", "R/W", PRESENT_BIN, {
+                       /* When set, bit indicates that the instruction 
addressed
+                        * by the instruction pointer pushed on the stack (when
+                        * the machine check was generated) is directly 
associated
+                        * with the error
+                        */
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Instruction addressed directly associated 
with the error" },
+                       { BITVAL_EOT }
+               }},
+               { 0, 1, "RIPV", "R/W", PRESENT_BIN, {
+                       /* When set, bit indicates that the instruction 
addressed
+                        * by the instruction pointer pushed on the stack (when
+                        * the machine check was generated) can be used to 
restart
+                        * the program. If cleared, the program cannot be 
reliably restarted
+                        */
+                       { MSR1(0), "Program cannot be reliably restarted" },
+                       { MSR1(1), "Instruction addressed can be used to 
restart the program" },
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x186, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERFEVTSEL0", "", {
+       /* if CPUID.0AH: EAX[15:8] > 0 */
+       {0x186, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERFEVTSEL0",
+                       "Performance Event Select Register 0", {
+               { 63, 32, RESERVED },
+               { 31, 8, "CMASK", "R/W", PRESENT_HEX, {
+                       /* When CMASK is not zero, the corresponding performance
+                        * counter 0 increments each cycle if the event count
+                        * is greater than or equal to the CMASK.
+                        */
+                       { BITVAL_EOT }
+               }},
+               { 23, 1, "INV", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "CMASK using as is" },
+                       { MSR1(1), "CMASK inerting" },
+                       { BITVAL_EOT }
+               }},
+               { 22, 1, "EN", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "No commence counting" },
+                       { MSR1(1), "Commence counting" },
+                       { BITVAL_EOT }
+               }},
+               { 21, 1, "AnyThread", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 20, 1, "INT", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Interrupt on counter overflow is disabled" 
},
+                       { MSR1(1), "Interrupt on counter overflow is enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 19, 1, "PC", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled pin control" },
+                       { MSR1(1), "Enabled pin control" },
+                       { BITVAL_EOT }
+               }},
+               { 18, 1, "Edge", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled edge detection" },
+                       { MSR1(1), "Enabled edge detection" },
+                       { BITVAL_EOT }
+               }},
+               { 17, 1, "OS", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Counts while in privilege level is ring 0" 
},
+                       { BITVAL_EOT }
+               }},
+               { 16, 1, "USR", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Counts while in privilege level is not ring 
0" },
+                       { BITVAL_EOT }
+               }},
+               { 15, 8, "UMask", "R/W", PRESENT_HEX, {
+                       /* Qualifies the microarchitectural condition
+                        * to detect on the selected event logic. */
+                       { BITVAL_EOT }
+               }},
+               { 7, 8, "Event Select", "R/W", PRESENT_HEX, {
+                       /* Selects a performance event logic unit. */
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x187, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERFEVTSEL1", "", {
+       /* if CPUID.0AH: EAX[15:8] > 0 */
+       {0x187, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERFEVTSEL1",
+                       "Performance Event Select Register 1", {
+               { 63, 32, RESERVED },
+               { 31, 8, "CMASK", "R/W", PRESENT_HEX, {
+                       /* When CMASK is not zero, the corresponding performance
+                        * counter 1 increments each cycle if the event count
+                        * is greater than or equal to the CMASK.
+                        */
+                       { BITVAL_EOT }
+               }},
+               { 23, 1, "INV", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "CMASK using as is" },
+                       { MSR1(1), "CMASK inerting" },
+                       { BITVAL_EOT }
+               }},
+               { 22, 1, "EN", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "No commence counting" },
+                       { MSR1(1), "Commence counting" },
+                       { BITVAL_EOT }
+               }},
+               { 21, 1, "AnyThread", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 20, 1, "INT", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Interrupt on counter overflow is disabled" 
},
+                       { MSR1(1), "Interrupt on counter overflow is enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 19, 1, "PC", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled pin control" },
+                       { MSR1(1), "Enabled pin control" },
+                       { BITVAL_EOT }
+               }},
+               { 18, 1, "Edge", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled edge detection" },
+                       { MSR1(1), "Enabled edge detection" },
+                       { BITVAL_EOT }
+               }},
+               { 17, 1, "OS", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Counts while in privilege level is ring 0" 
},
+                       { BITVAL_EOT }
+               }},
+               { 16, 1, "USR", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Counts while in privilege level is not ring 
0" },
+                       { BITVAL_EOT }
+               }},
+               { 15, 8, "UMask", "R/W", PRESENT_HEX, {
+                       /* Qualifies the microarchitectural condition
+                        * to detect on the selected event logic. */
+                       { BITVAL_EOT }
+               }},
+               { 7, 8, "Event Select", "R/W", PRESENT_HEX, {
+                       /* Selects a performance event logic unit. */
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
        {0x198, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_STATUS", "", {
@@ -223,19 +490,143 @@ const struct msrdef intel_core2_later_msrs[] = {
        {0x199, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_CTL", "", {
                { BITS_EOT }
        }},
-       {0x19a, MSRTYPE_RDWR, MSR2(0,0), "IA32_CLOCK_MODULATION", "", {
+       {0x19a, MSRTYPE_RDWR, MSR2(0,0), "IA32_CLOCK_MODULATION",
+                       "Clock Modulation", {
+               { 63, 59, RESERVED },
+               { 4, 1, "On demand Clock Modulation", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "On demand Clock Modulation is disabled" },
+                       { MSR1(1), "On demand Clock Modulation is enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 3, 3, "On demand Clock Modulation Duty Cycle", "R/W", 
PRESENT_HEX, {
+                       { BITVAL_EOT }
+               }},
+               { 0, 1, RESERVED },
                { BITS_EOT }
        }},
-       {0x19b, MSRTYPE_RDWR, MSR2(0,0), "IA32_THERM_INTERRUPT", "", {
+       {0x19b, MSRTYPE_RDWR, MSR2(0,0), "IA32_THERM_INTERRUPT",
+                       "Thermal Interrupt Control", {
                { BITS_EOT }
        }},
-       {0x19c, MSRTYPE_RDWR, MSR2(0,0), "IA32_THERM_STATUS", "", {
+       {0x19c, MSRTYPE_RDWR, MSR2(0,0), "IA32_THERM_STATUS",
+                       "Thermal Monitor Status", {
                { BITS_EOT }
        }},
        {0x19d, MSRTYPE_RDWR, MSR2(0,0), "MSR_THERM2_CTL", "", {
                { BITS_EOT }
        }},
-       {0x1a0, MSRTYPE_RDWR, MSR2(0,0), "IA32_MISC_ENABLE", "", {
+       {0x1a0, MSRTYPE_RDWR, MSR2(0,0), "IA32_MISC_ENABLE",
+                       "Enable miscellaneous processor features", {
+               { 63, 24, RESERVED },
+               { 39, 1, "IP Prefetcher Disable", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "IP Prefetcher enabled" },
+                       { MSR1(1), "IP Prefetcher disabled" },
+                       { BITVAL_EOT }
+               }},
+               /* Note: [38] bit using for whole package,
+                * while some other bits can be Core or Thread
+                * specific.
+                */
+               { 38, 1, "IDA Disable", "R/W", PRESENT_BIN, {
+                       /* When set to a 0 on processors that support IDA,
+                        * CPUID.06H: EAX[1] reports the processor's
+                        * support of turbo mode is enabled.
+                        */
+                       { MSR1(0), "IDA enabled" },
+                       /* When set 1 on processors that support Intel Turbo 
Boost
+                        * technology, the turbo mode feature is disabled and
+                        * the IDA_Enable feature flag will be clear 
(CPUID.06H: EAX[1]=0).
+                        */
+                       { MSR1(1), "IDA disabled" },
+                       { BITVAL_EOT }
+                       /* Note: the power-on default value is used by BIOS to 
detect
+                        * hardware support of turbo mode. If power-on default 
value is 1,
+                        * turbo mode is available in the processor. If 
power-on default
+                        * value is 0, turbo mode not available.
+                        */
+               }},
+               { 37, 1, "DCU Prefetcher Disable", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "DCU L1 data cache prefetcher is enabled" },
+                       { MSR1(1), "DCU L1 data cache prefetcher is disabled" },
+                       { BITVAL_EOT }
+               }},
+               { 36, 2, RESERVED },
+               { 34, 1, "XD Bit Disable", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 33, 10, RESERVED },
+               { 23, 1, "xTPR Message Disable", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 22, 1, "Limit CPUID Maxval", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 21, 1, RESERVED },
+               { 20, 1, "Enhanced Intel SpeedStep Select Lock", "R/W",
+                               PRESENT_BIN, {
+                       { MSR1(0), "Enhanced Intel SpeedStep Select\
+                               and Enable bits are writeable" },
+                       { MSR1(1), "Enhanced Intel SpeedStep Select\
+                               and Enable bits are locked and R/O" },
+                       { BITVAL_EOT }
+               }},
+               { 19, 1, "Adjacent Cache Line Prefetch Disable", "R/W",
+                               PRESENT_BIN, {
+                       { MSR1(0), "Fetching cache lines that comprise a cache\
+                               line pair (128 bytes)" },
+                       { MSR1(1), "Fetching cache line that contains data\
+                               currently required by the processor" },
+                       { BITVAL_EOT }
+               }},
+               { 18, 1, "Enable Monitor FSM", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 17, 1, "UNDOCUMENTED", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* Note: [16] bit using for whole package,
+                * while some other bits can be Core or Thread
+                * specific.
+                */
+               { 16, 1, "Enhanced Intel SpeedStep Technology Enable", "R/W",
+                               PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 15, 2, RESERVED },
+               { 13, 1, "TM2 Enable", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 12, 1, "Precise Event Based Sampling Unavailable", "R/O",
+                               PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 11, 1, "Branch Trace Storage Unavailable", "R/O", 
PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 10, 1, "FERR# Multiplexing Enable", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "FERR# signaling compatible behaviour" },
+                       { MSR1(1), "FERR# asserted by the processor to indicate\
+                               a pending break event within the processor" },
+                       { BITVAL_EOT }
+               }},
+               { 9, 1, "Hardware Prefetcher Disable", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Hardware prefetcher is enabled" },
+                       { MSR1(1), "Hardware prefetcher is disabled" },
+                       { BITVAL_EOT }
+               }},
+               { 8, 1, RESERVED },
+               { 7, 1, "Performance Monitoring Available", "R", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 6, 3, RESERVED },
+               { 3, 1, "Automatic Thermal Control Circuit Enable", "R/W"
+                               , PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 2, 2, RESERVED },
+               { 0, 1, "Fast-Strings Enable", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
        {0x1c9, MSRTYPE_RDWR, MSR2(0,0), "MSR_LASTBRANCH_TOS", "", {
@@ -331,37 +722,341 @@ const struct msrdef intel_core2_later_msrs[] = {
        {0x26f, MSRTYPE_RDWR, MSR2(0,0), "IA32_MTRR_FIX4K_F8000", "", {
                { BITS_EOT }
        }},
-       {0x277, MSRTYPE_RDWR, MSR2(0,0), "IA32_PAT", "", {
+       {0x277, MSRTYPE_RDWR, MSR2(0,0), "IA32_PAT", "IA32_PAT", {
+               { 63, 5, RESERVED },
+               { 58, 3, "PA7", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 55, 5, RESERVED },
+               { 40, 3, "PA6", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 47, 5, RESERVED },
+               { 42, 3, "PA5", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 39, 5, RESERVED },
+               { 34, 3, "PA4", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 31, 5, RESERVED },
+               { 26, 3, "PA3", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 23, 5, RESERVED },
+               { 18, 3, "PA2", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 15, 5, RESERVED },
+               { 10, 3, "PA1", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 7, 5, RESERVED },
+               { 2, 3, "PA0", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x2ff, MSRTYPE_RDWR, MSR2(0,0), "IA32_MTRR_DEF_TYPE", "", {
+       {0x2ff, MSRTYPE_RDWR, MSR2(0,0), "IA32_MTRR_DEF_TYPE",
+                       "Default Memory Types", {
+               { 63, 52, RESERVED },
+               { 11, 1, "MTRR Enable", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 10, 1, "Fixed Range MTRR Enable", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 9, 7, RESERVED },
+               { 2, 3, "Default Memory Type", "R/W", PRESENT_HEX, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x309, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR0", "", {
+       /* if CPUID.0AH: EDX[4:0] > 0 */
+       {0x309, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR0", "Fixed-Function \
+                       Performance Counter Register 0: Counts 
Instr_Retired.Any", {
+               /* Also known as MSR_PERF_FIXED_CTR0 */
                { BITS_EOT }
        }},
-       {0x30a, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR1", "", {
+       /* if CPUID.0AH: EDX[4:0] > 1 */
+       {0x30a, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR1", "Fixed-Function \
+                       Performance Counter Register 1: Counts 
CPU_CLK_Unhalted.Core ", {
+               /* Also known as MSR_PERF_FIXED_CTR1 */
                { BITS_EOT }
        }},
-       {0x30b, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR2", "", {
+       /* if CPUID.0AH: EDX[4:0] > 2 */
+       {0x30b, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR2", "Fixed-Function \
+                       Performance Counter Register 2: Counts 
CPU_CLK_Unhalted.Ref", {
+               /* Also known as MSR_PERF_FIXED_CTR2 */
                { BITS_EOT }
        }},
-       {0x345, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_CAPABILITIES", "", {
+       {0x345, MSRTYPE_RDONLY, MSR2(0,0), "IA32_PERF_CAPABILITIES", "", {
+       /* Additional info available at Section 17.4.1 of
+        * Intel 64 and IA-32 Architecures Software Developer's
+        * Manual, Volume 3.
+        */
+               { 63, 56, RESERVED },
+               { 7, 1, "PEBSSaveArchRegs", "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 6, 1, "PEBS Record Format", "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 5, 6, "LBR Format", "R/O", PRESENT_HEX, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x38d, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR_CTRL", "", {
+       /* if CPUID.0AH: EAX[7:0] > 1*/
+       {0x38d, MSRTYPE_RDWR, MSR2(0,0), "IA32_FIXED_CTR_CTRL",
+               "Fixed-Function-Counter Control Register", {
+       /* Also known as MSR_PERF_FIXED_CTR_CTRL.
+        * Counter increments while the results of ANDing respective enable bit
+        * in IA32_PERF_GLOBAL_CTRL with the corresponding OS or USR bits
+        * in this MSR is true. */
+               { 63, 52, RESERVED },
+               { 11, 1, "EN2_PMI", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "PMI when fixed counter 2 overflows is 
enabled" },
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH EAX[7:0] > 2 */
+               { 10, 1, "AnyThread 2", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Counter only increments the associated 
event \
+                               conditions occuring in the logical processor 
which programmed the MSR" },
+                       { MSR1(1), "Counting the associated event conditions \
+                               occuring across all logical processors sharing 
a processor core" },
+                       { BITVAL_EOT }
+               }},
+               { 9, 1, "EN2_Usr", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Fixed counter 2 is enabled to count while 
CPL > 0" },
+                       { BITVAL_EOT }
+               }},
+               { 8, 1, "EN2_OS", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Fixed counter 2 is enabled to count while 
CPL = 0" },
+                       { BITVAL_EOT }
+               }},
+               { 7, 1, "EN1_PMI", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "PMI when fixed counter 1 overflows is 
enabled" },
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 2 */
+               { 6, 1, "AnyThread 1", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Counter only increments the associated 
event \
+                               conditions occuring in the logical processor 
which programmed the MSR" },
+                       { MSR1(1), "Counting the associated event conditions \
+                               occuring across all logical processors sharing 
a processor core" },
+                       { BITVAL_EOT }
+               }},
+               { 5, 1, "EN1_Usr", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Fixed counter 1 is enabled to count while 
CPL > 0" },
+                       { BITVAL_EOT }
+               }},
+               { 4, 1, "EN1_OS", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Fixed counter 1 is enabled to count while 
CPL = 0" },
+                       { BITVAL_EOT }
+               }},
+               { 3, 1, "EN0_PMI", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "PMI when fixed counter 0 overflows is 
enabled" },
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 2 */
+               { 2, 1, "AnyThread 0", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Counter only increments the associated 
event \
+                               conditions occuring in the logical processor 
which programmed the MSR" },
+                       { MSR1(1), "Counting the associated event conditions \
+                               occuring across all logical processors sharing 
a processor core" },
+                       { BITVAL_EOT }
+               }},
+               { 1, 1, "EN0_Usr", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Fixed counter 0 is enabled to count while 
CPL > 0" },
+                       { BITVAL_EOT }
+               }},
+               { 0, 1, "EN0_OS", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Nothing" },
+                       { MSR1(1), "Fixed counter 0 is enabled to count while 
CPL = 0" },
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x38e, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_GLOBAL_STATUS", "", {
+       /* if CPUID.0AH: EAX[7:0] > 0 */
+       {0x38e, MSRTYPE_RDONLY, MSR2(0,0), "IA32_PERF_GLOBAL_STATUS",
+                       "Global Performance Counter Status", {
+       /* Also known as MSR_PERF_GLOBAL_STATUS */
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 63, 1, "CondChg: Status bits of this register has changed",
+                               "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 62, 1, "OvfBuf: DS SAVE area Buffer overflow status",
+                               "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 2 */
+               { 61, 1, "Ovf_Uncore: Uncore counter overflow status",
+                               "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 60, 26, RESERVED },
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 34, 1, "Ovf_FixedCtr2: Overflow status of IA32_FIXED_CTR2",
+                               "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 33, 1, "Ovf_FixedCtr1: Overflow status of IA32_FIXED_CTR1",
+                               "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 32, 1, "Ovf_FixedCtr0: Overflow status of IA32_FIXED_CTR0",
+                               "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 31, 28, RESERVED },
+               /* presented only in 06_2EH Nehalem model */
+               { 3, 1, "Ovf_PMC3: Overflow status of IA32_PMC3", "R/O", 
PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* presented only in 06_2EH Nehalem model */
+               { 2, 1, "Ovf_PMC2: Overflow status of IA32_PMC2", "R/O", 
PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 1, 1, "Ovf_PMC1: Overflow status of IA32_PMC1", "R/O", 
PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 0, 1, "Ovf_PMC0: Overflow status of IA32_PMC0", "R/O", 
PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x38f, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_GLOBAL_CTL", "", {
+       /* if CPUID.0AH: EAX[7:0] > 0 */
+       {0x38f, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_GLOBAL_CTL",
+               "Global Performance Counter Control", {
+       /* Counter increments while the result of ANDing respective
+        * enable bit in this MSR with corresponding OS or USR bits
+        * in general-purpose or fixed counter control MSR is true.
+        */
+               { 63, 29, RESERVED },
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 34, 1, "EN_FIXED_CTR2", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 33, 1, "EN_FIXED_CTR1", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 32, 1, "EN_FIXED_CTR0", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 31, 30, RESERVED },
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 1, 1, "EN_PMC1", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 0, 1, "EN_PMC0", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x390, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_GLOBAL_OVF_CTL", "", {
+       /* if CPUID.0AH: EAX[7:0] > 0 */
+       {0x390, MSRTYPE_RDWR, MSR2(0,0), "IA32_PERF_GLOBAL_OVF_CTL",
+                       "Global Performance Counter Overflow Control", {
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 63, 1, "Clear CondChg bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 62, 1, "Clear OvfBuf bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* Presented only in 06_2EH Nehalem model */
+               { 61, 1, "Clear Ovf_Uncore bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 60, 26, RESERVED },
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 34, 1, "Clear Ovf_FIXED_CTR2 bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 33, 1, "Clear Ovf_FIXED_CTR1 bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 1 */
+               { 32, 1, "Clear Ovf_FIXED_CTR0 bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 31, 30, RESERVED },
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 1, 1, "Clear Ovf_PMC1 bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               /* if CPUID.0AH: EAX[7:0] > 0 */
+               { 0, 1, "Clear Ovf_PMC0 bit", "R/W", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x3f1, MSRTYPE_RDWR, MSR2(0,0), "IA32_PEBS_ENABLE", "", {
+       /* See Section 18.6.1.1 of Intel 64 and IA-32 Architectures
+        * Software Developer's Manual, Volume 3,
+        * "Precise Event Based Sampling (PEBS)".
+        */
+       {0x3f1, MSRTYPE_RDWR, MSR2(0,0), "IA32_PEBS_ENABLE", "PEBS Control", {
+               { 63, 28, RESERVED },
+               { 35, 1, "Load Latency on IA32_PMC3", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 34, 1, "Load Latency on IA32_PMC2", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 33, 1, "Load Latency on IA32_PMC1", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 32, 1, "Load Latency on IA32_PMC0", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 31, 28, RESERVED },
+               { 3, 1, "PEBS on IA32_PMC3", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 2, 1, "PEBS on IA32_PMC2", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 1, 1, "PEBS on IA32_PMC1", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
+               { 0, 1, "PEBS on IA32_PMC0", "R/W", PRESENT_BIN, {
+                       { MSR1(0), "Disabled" },
+                       { MSR1(1), "Enabled" },
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
        {0x400, MSRTYPE_RDWR, MSR2(0,0), "IA32_MCO_CTL", "", {
@@ -442,43 +1137,109 @@ const struct msrdef intel_core2_later_msrs[] = {
        {0x419, MSRTYPE_RDWR, MSR2(0,0), "IA32_MC6_STATUS", "", {
                { BITS_EOT }
        }},
-       {0x480, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_BASIC", "", {
+       {0x480, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_BASIC",
+                       "Reporting Register of Basic VMX Capabilities", {
+               /* Additional info available at
+                * Appendix A.1, "Basic VMX Information" */
+               { 63, 10, RESERVED },
+               { 53, 4, "Memory type for VMREAD and VMWRITE", "R/O", 
PRESENT_HEX, {
+                       { BITVAL_EOT }
+               }},
+               { 49, 1, "Support of dual-treatment of system-management 
functions",
+                               "R/O", PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 48, 1, "Enable full linear address access", "R/O", 
PRESENT_BIN, {
+                       { BITVAL_EOT }
+               }},
+               { 47, 3, RESERVED },
+               { 44, 13, "VMXON region allocation size", "R/O", PRESENT_DEC, {
+                       { BITVAL_EOT }
+               }},
+               { 31, 32, "VMCS Revision Identifier", "R/O", PRESENT_HEX, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
-       {0x481, MSRTYPE_RDWR, MSR2(0,0), "IA32_PINBASED_CTLS", "", {
+       {0x481, MSRTYPE_RDONLY, MSR2(0,0), "IA32_PINBASED_CTLS",
+                       "Capability Reporting Register of \
+                       Pin-based VM-execution Controls", {
+               /* Additional info available at Appendix A.3,
+                * "VM-Execution Controls" */
                { BITS_EOT }
        }},
-       {0x482, MSRTYPE_RDWR, MSR2(0,0), "IA32_PROCBASED_CTLS", "", {
+       {0x482, MSRTYPE_RDONLY, MSR2(0,0), "IA32_PROCBASED_CTLS",
+                       "Capability Reporting Register of \
+                       Primary Processor-based VM-execution Controls", {
+               /* Additional info available at Appendix A.3,
+                * "VM-Execution Controls" */
                { BITS_EOT }
        }},
-       {0x483, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_EXIT_CTLS", "", {
+       {0x483, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_EXIT_CTLS",
+                       "Capability Reporting Register of VM-exit Controls", {
+               /* Additional info available at Appendix A.4,
+                * "VM-Exit Controls" */
                { BITS_EOT }
        }},
-       {0x484, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_ENTRY_CTLS", "", {
+       {0x484, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_ENTRY_CTLS",
+                       "Capability Reporting Register of VM-entry Controls", {
+               /* Additional info available at Appendix A.5,
+                * "VM-Entry Controls" */
                { BITS_EOT }
        }},
-       {0x485, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_MISC", "", {
+       {0x485, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_MISC",
+                       "Reporting Register of Miscellaneous VMX Capabilities", 
{
+               /* Additional info available at Appendix A.6,
+                * "Miscellaneous Data" */
                { BITS_EOT }
        }},
-       {0x486, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_CR0_FIXED0", "", {
+       {0x486, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_CR0_FIXED0",
+                       "Capability Reporting Register of CR0 Bits Fixed to 0", 
{
+               /* Additional info available at Appendix A.7,
+                * "VMX-Fixed Bits in CR0" */
                { BITS_EOT }
        }},
-       {0x487, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_CR0_FIXED1", "", {
+       {0x487, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_CR0_FIXED1",
+                       "Capability Reporting Register of CR0 Bits Fixed to 1", 
{
+               /* Additional info available at Appendix A.7,
+                * "VMX-Fixed Bits in CR0" */
                { BITS_EOT }
        }},
-       {0x488, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_CR4_FIXED0", "", {
+       {0x488, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_CR4_FIXED0",
+                       "Capability Reporting Register of CR4 Bits Fixed to 0", 
{
+               /* Additional info available at Appendix A.8,
+                * "VMX-Fixed Bits in CR4" */
                { BITS_EOT }
        }},
-       {0x489, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_CR4_FIXED1", "", {
+       {0x489, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_CR4_FIXED1",
+                       "Capability Reporting Register of CR4 Bits Fixed to 1", 
{
+               /* Additional info available at Appendix A.8,
+                * "VMX-Fixed Bits in CR4" */
                { BITS_EOT }
        }},
-       {0x48a, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_VMCS_ENUM", "", {
+       {0x48a, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_VMCS_ENUM",
+                       "Capability Reporting Register of VMCS Field 
Enumeration", {
+               /* Additional info available at Appendix A.9,
+                * "VMCS Enumeration" */
                { BITS_EOT }
        }},
-       {0x48b, MSRTYPE_RDWR, MSR2(0,0), "IA32_VMX_PROCBASED_CTLS2", "", {
+       {0x48b, MSRTYPE_RDONLY, MSR2(0,0), "IA32_VMX_PROCBASED_CTLS2",
+                       "Capability Reporting Register of Secondary \
+                       Processor-based VM-execution Controls", {
+               /* Additional info available at Appendix A.3,
+                * "VM-Execution Controls" */
                { BITS_EOT }
        }},
-       {0x600, MSRTYPE_RDWR, MSR2(0,0), "IA32_DS_AREA", "", {
+       {0x600, MSRTYPE_RDWR, MSR2(0,0), "IA32_DS_AREA", "DS Save Area", {
+               /* Additional info available at Section 18.10.4 of Intel 64
+                * and IA-32 Architectures Software Developer's Manual,
+                * "Debug Store (DS) Mechanism".
+                */
+               { 63, 32, RESERVED }, // reserved if not in IA-32e mode
+               { 31, 32, "Linear address of DS buffer management area",
+                               "R/W", PRESENT_HEX, {
+                       { BITVAL_EOT }
+               }},
                { BITS_EOT }
        }},
        {0x107cc, MSRTYPE_RDWR, MSR2(0,0), "MSR_EMON_L3_CTR_CTL0", "", {

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