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Re: [PATCH v5 05/10] ACPI ERST: support for ACPI ERST feature
|
From: |
Igor Mammedov |
|
Subject: |
Re: [PATCH v5 05/10] ACPI ERST: support for ACPI ERST feature |
|
Date: |
Thu, 5 Aug 2021 11:05:44 +0200 |
On Wed, 4 Aug 2021 17:13:40 -0500
Eric DeVolder <eric.devolder@oracle.com> wrote:
> On 7/27/21 7:52 AM, Igor Mammedov wrote:
> > On Mon, 26 Jul 2021 15:01:05 -0500
> > Eric DeVolder <eric.devolder@oracle.com> wrote:
> >
> >> On 7/26/21 5:42 AM, Igor Mammedov wrote:
> >>> On Wed, 21 Jul 2021 11:07:40 -0500
> >>> Eric DeVolder <eric.devolder@oracle.com> wrote:
> >>>
> >>>> On 7/20/21 7:17 AM, Igor Mammedov wrote:
> >>>>> On Wed, 30 Jun 2021 15:07:16 -0400
> >>>>> Eric DeVolder <eric.devolder@oracle.com> wrote:
> >>>>>
> > [..]
> >>>>>> +
> >>>>>> +static uint64_t erst_rd_reg64(hwaddr addr,
> >>>>>> + uint64_t reg, unsigned size)
> >>>>>> +{
> >>>>>> + uint64_t rdval;
> >>>>>> + uint64_t mask;
> >>>>>> + unsigned shift;
> >>>>>> +
> >>>>>> + if (size == sizeof(uint64_t)) {
> >>>>>> + /* 64b access */
> >>>>>> + mask = 0xFFFFFFFFFFFFFFFFUL;
> >>>>>> + shift = 0;
> >>>>>> + } else {
> >>>>>> + /* 32b access */
> >>>>>> + mask = 0x00000000FFFFFFFFUL;
> >>>>>> + shift = ((addr & 0x4) == 0x4) ? 32 : 0;
> >>>>>> + }
> >>>>>> +
> >>>>>> + rdval = reg;
> >>>>>> + rdval >>= shift;
> >>>>>> + rdval &= mask;
> >>>>>> +
> >>>>>> + return rdval;
> >>>>>> +}
> >>>>>> +
> >>>>>> +static uint64_t erst_wr_reg64(hwaddr addr,
> >>>>>> + uint64_t reg, uint64_t val, unsigned size)
> >>>>>> +{
> >>>>>> + uint64_t wrval;
> >>>>>> + uint64_t mask;
> >>>>>> + unsigned shift;
> >>>>>> +
> >>>>>> + if (size == sizeof(uint64_t)) {
> >>>>>> + /* 64b access */
> >>>>>> + mask = 0xFFFFFFFFFFFFFFFFUL;
> >>>>>> + shift = 0;
> >>>>>> + } else {
> >>>>>> + /* 32b access */
> >>>>>> + mask = 0x00000000FFFFFFFFUL;
> >>>>>> + shift = ((addr & 0x4) == 0x4) ? 32 : 0;
> >>>>>> + }
> >>>>>> +
> >>>>>> + val &= mask;
> >>>>>> + val <<= shift;
> >>>>>> + mask <<= shift;
> >>>>>> + wrval = reg;
> >>>>>> + wrval &= ~mask;
> >>>>>> + wrval |= val;
> >>>>>> +
> >>>>>> + return wrval;
> >>>>>> +}
> >>>>> (I see in next patch it's us defining access width in the ACPI tables)
> >>>>> so question is: do we have to have mixed register width access?
> >>>>> can't all register accesses be 64-bit?
> >>>>
> >>>> Initially I attempted to just use 64-bit exclusively. The problem is
> >>>> that,
> >>>> for reasons I don't understand, the OSPM on Linux, even x86_64, breaks a
> >>>> 64b
> >>>> register access into two. Here's an example of reading the exchange
> >>>> buffer
> >>>> address, which is coded as a 64b access:
> >>>>
> >>>> acpi_erst_reg_write addr: 0x0000 <== 0x000000000000000d (size: 4)
> >>>> acpi_erst_reg_read addr: 0x0008 ==> 0x00000000c1010000 (size: 4)
> >>>> acpi_erst_reg_read addr: 0x000c ==> 0x0000000000000000 (size: 4)
> >>>>
> >>>> So I went ahead and made ACTION register accesses 32b, else there would
> >>>> be two reads of 32-bts, of which the second is useless.
> >>>
> >>> could you post here decompiled ERST table?
> >> As it is long, I posted it to the end of this message.
> >
> > RHEL8 or Fedora 34 says that erst is invalid table,
> > so I can't help tracing what's going on there.
> >
> > You'll have to figure out why access is not 64 bit on your own.
>
> Today I downloaded Fedora 34 Server and created a guest. Using my
> qemu-6 branch with ERST, it appears to work just fine. I was able to
> create entries into it.
>
>
> [ 0.010215] ACPI: ERST 0x000000007F9F3000 000390 (v01 BOCHS BXPC
> 00000001 BXPC 00000001)
> [ 0.010250] ACPI: Reserving ERST table memory at [mem
> 0x7f9f3000-0x7f9f338f]
> [ 1.056244] ERST: Error Record Serialization Table (ERST) support is
> initialized.
> [ 1.056279] pstore: Registered erst as persistent store backend
>
> total 0
> drwxr-x---. 2 root root 0 Aug 4 18:05 .
> drwxr-xr-x. 10 root root 0 Aug 4 18:05 ..
> -r--r--r--. 1 root root 17700 Aug 4 17:54 dmesg-erst-6992696633267847169
> -r--r--r--. 1 root root 17714 Aug 4 17:54 dmesg-erst-6992696633267847170
>
>
> It appears to Linux OSPM is taking the 64-bit register access and breaking it
> into two 32-bit accesses.
We need to figure out why this happens.
> If this is the case, then the fix would be in
> Linux and not this code.
>
> Pending your response to this finding, I have v6 ready to go.
ok, let's go with v6, I hope it will work for me.
> Thanks
> eric
>
>
> >
> > [...]
> >
> >> Obtained via a running guest with:
> >> iasl -d -vt /sys/firmware/acpi/tables/ERST
> >>
> >> /*
> >> * Intel ACPI Component Architecture
> >> * AML/ASL+ Disassembler version 20180105 (64-bit version)
> >> * Copyright (c) 2000 - 2018 Intel Corporation
> >> *
> >> * Disassembly of ERST.blob, Mon Jul 26 14:31:21 2021
> >> *
> >> * ACPI Data Table [ERST]
> >> *
> >> * Format: [HexOffset DecimalOffset ByteLength] FieldName : FieldValue
> >> */
> >>
> >> [000h 0000 4] Signature : "ERST" [Error Record
> >> Serialization Table]
> >> [004h 0004 4] Table Length : 00000390
> >> [008h 0008 1] Revision : 01
> >> [009h 0009 1] Checksum : C8
> >> [00Ah 0010 6] Oem ID : "BOCHS "
> >> [010h 0016 8] Oem Table ID : "BXPC "
> >> [018h 0024 4] Oem Revision : 00000001
> >> [01Ch 0028 4] Asl Compiler ID : "BXPC"
> >> [020h 0032 4] Asl Compiler Revision : 00000001
> >>
> >> [024h 0036 4] Serialization Header Length : 00000030
> >> [028h 0040 4] Reserved : 00000000
> >> [02Ch 0044 4] Instruction Entry Count : 0000001B
> >>
> >> [030h 0048 1] Action : 00 [Begin Write Operation]
> >> [031h 0049 1] Instruction : 03 [Write Register Value]
> >> [032h 0050 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [033h 0051 1] Reserved : 00
> >>
> >> [034h 0052 12] Register Region : [Generic Address Structure]
> >> [034h 0052 1] Space ID : 00 [SystemMemory]
> >> [035h 0053 1] Bit Width : 20
> >> [036h 0054 1] Bit Offset : 00
> >> [037h 0055 1] Encoded Access Width : 03 [DWord Access:32]
> >> [038h 0056 8] Address : 00000000C1063000
> >>
> >> [040h 0064 8] Value : 0000000000000000
> >> [048h 0072 8] Mask : 00000000000000FF
> >>
> >> [050h 0080 1] Action : 01 [Begin Read Operation]
> >> [051h 0081 1] Instruction : 03 [Write Register Value]
> >> [052h 0082 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [053h 0083 1] Reserved : 00
> >>
> >> [054h 0084 12] Register Region : [Generic Address Structure]
> >> [054h 0084 1] Space ID : 00 [SystemMemory]
> >> [055h 0085 1] Bit Width : 20
> >> [056h 0086 1] Bit Offset : 00
> >> [057h 0087 1] Encoded Access Width : 03 [DWord Access:32]
> >> [058h 0088 8] Address : 00000000C1063000
> >>
> >> [060h 0096 8] Value : 0000000000000001
> >> [068h 0104 8] Mask : 00000000000000FF
> >>
> >> [070h 0112 1] Action : 02 [Begin Clear Operation]
> >> [071h 0113 1] Instruction : 03 [Write Register Value]
> >> [072h 0114 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [073h 0115 1] Reserved : 00
> >>
> >> [074h 0116 12] Register Region : [Generic Address Structure]
> >> [074h 0116 1] Space ID : 00 [SystemMemory]
> >> [075h 0117 1] Bit Width : 20
> >> [076h 0118 1] Bit Offset : 00
> >> [077h 0119 1] Encoded Access Width : 03 [DWord Access:32]
> >> [078h 0120 8] Address : 00000000C1063000
> >>
> >> [080h 0128 8] Value : 0000000000000002
> >> [088h 0136 8] Mask : 00000000000000FF
> >>
> >> [090h 0144 1] Action : 03 [End Operation]
> >> [091h 0145 1] Instruction : 03 [Write Register Value]
> >> [092h 0146 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [093h 0147 1] Reserved : 00
> >>
> >> [094h 0148 12] Register Region : [Generic Address Structure]
> >> [094h 0148 1] Space ID : 00 [SystemMemory]
> >> [095h 0149 1] Bit Width : 20
> >> [096h 0150 1] Bit Offset : 00
> >> [097h 0151 1] Encoded Access Width : 03 [DWord Access:32]
> >> [098h 0152 8] Address : 00000000C1063000
> >>
> >> [0A0h 0160 8] Value : 0000000000000003
> >> [0A8h 0168 8] Mask : 00000000000000FF
> >>
> >> [0B0h 0176 1] Action : 04 [Set Record Offset]
> >> [0B1h 0177 1] Instruction : 02 [Write Register]
> >> [0B2h 0178 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [0B3h 0179 1] Reserved : 00
> >>
> >> [0B4h 0180 12] Register Region : [Generic Address Structure]
> >> [0B4h 0180 1] Space ID : 00 [SystemMemory]
> >> [0B5h 0181 1] Bit Width : 20
> >> [0B6h 0182 1] Bit Offset : 00
> >> [0B7h 0183 1] Encoded Access Width : 03 [DWord Access:32]
> >> [0B8h 0184 8] Address : 00000000C1063008
> >>
> >> [0C0h 0192 8] Value : 0000000000000000
> >> [0C8h 0200 8] Mask : 00000000FFFFFFFF
> >>
> >> [0D0h 0208 1] Action : 04 [Set Record Offset]
> >> [0D1h 0209 1] Instruction : 03 [Write Register Value]
> >> [0D2h 0210 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [0D3h 0211 1] Reserved : 00
> >>
> >> [0D4h 0212 12] Register Region : [Generic Address Structure]
> >> [0D4h 0212 1] Space ID : 00 [SystemMemory]
> >> [0D5h 0213 1] Bit Width : 20
> >> [0D6h 0214 1] Bit Offset : 00
> >> [0D7h 0215 1] Encoded Access Width : 03 [DWord Access:32]
> >> [0D8h 0216 8] Address : 00000000C1063000
> >>
> >> [0E0h 0224 8] Value : 0000000000000004
> >> [0E8h 0232 8] Mask : 00000000000000FF
> >>
> >> [0F0h 0240 1] Action : 05 [Execute Operation]
> >> [0F1h 0241 1] Instruction : 03 [Write Register Value]
> >> [0F2h 0242 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [0F3h 0243 1] Reserved : 00
> >>
> >> [0F4h 0244 12] Register Region : [Generic Address Structure]
> >> [0F4h 0244 1] Space ID : 00 [SystemMemory]
> >> [0F5h 0245 1] Bit Width : 20
> >> [0F6h 0246 1] Bit Offset : 00
> >> [0F7h 0247 1] Encoded Access Width : 03 [DWord Access:32]
> >> [0F8h 0248 8] Address : 00000000C1063008
> >>
> >> [100h 0256 8] Value : 000000000000009C
> >> [108h 0264 8] Mask : 00000000000000FF
> >>
> >> [110h 0272 1] Action : 05 [Execute Operation]
> >> [111h 0273 1] Instruction : 03 [Write Register Value]
> >> [112h 0274 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [113h 0275 1] Reserved : 00
> >>
> >> [114h 0276 12] Register Region : [Generic Address Structure]
> >> [114h 0276 1] Space ID : 00 [SystemMemory]
> >> [115h 0277 1] Bit Width : 20
> >> [116h 0278 1] Bit Offset : 00
> >> [117h 0279 1] Encoded Access Width : 03 [DWord Access:32]
> >> [118h 0280 8] Address : 00000000C1063000
> >>
> >> [120h 0288 8] Value : 0000000000000005
> >> [128h 0296 8] Mask : 00000000000000FF
> >>
> >> [130h 0304 1] Action : 06 [Check Busy Status]
> >> [131h 0305 1] Instruction : 03 [Write Register Value]
> >> [132h 0306 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [133h 0307 1] Reserved : 00
> >>
> >> [134h 0308 12] Register Region : [Generic Address Structure]
> >> [134h 0308 1] Space ID : 00 [SystemMemory]
> >> [135h 0309 1] Bit Width : 20
> >> [136h 0310 1] Bit Offset : 00
> >> [137h 0311 1] Encoded Access Width : 03 [DWord Access:32]
> >> [138h 0312 8] Address : 00000000C1063000
> >>
> >> [140h 0320 8] Value : 0000000000000006
> >> [148h 0328 8] Mask : 00000000000000FF
> >>
> >> [150h 0336 1] Action : 06 [Check Busy Status]
> >> [151h 0337 1] Instruction : 01 [Read Register Value]
> >> [152h 0338 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [153h 0339 1] Reserved : 00
> >>
> >> [154h 0340 12] Register Region : [Generic Address Structure]
> >> [154h 0340 1] Space ID : 00 [SystemMemory]
> >> [155h 0341 1] Bit Width : 20
> >> [156h 0342 1] Bit Offset : 00
> >> [157h 0343 1] Encoded Access Width : 03 [DWord Access:32]
> >> [158h 0344 8] Address : 00000000C1063008
> >>
> >> [160h 0352 8] Value : 0000000000000001
> >> [168h 0360 8] Mask : 00000000000000FF
> >>
> >> [170h 0368 1] Action : 07 [Get Command Status]
> >> [171h 0369 1] Instruction : 03 [Write Register Value]
> >> [172h 0370 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [173h 0371 1] Reserved : 00
> >>
> >> [174h 0372 12] Register Region : [Generic Address Structure]
> >> [174h 0372 1] Space ID : 00 [SystemMemory]
> >> [175h 0373 1] Bit Width : 20
> >> [176h 0374 1] Bit Offset : 00
> >> [177h 0375 1] Encoded Access Width : 03 [DWord Access:32]
> >> [178h 0376 8] Address : 00000000C1063000
> >>
> >> [180h 0384 8] Value : 0000000000000007
> >> [188h 0392 8] Mask : 00000000000000FF
> >>
> >> [190h 0400 1] Action : 07 [Get Command Status]
> >> [191h 0401 1] Instruction : 00 [Read Register]
> >> [192h 0402 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [193h 0403 1] Reserved : 00
> >>
> >> [194h 0404 12] Register Region : [Generic Address Structure]
> >> [194h 0404 1] Space ID : 00 [SystemMemory]
> >> [195h 0405 1] Bit Width : 20
> >> [196h 0406 1] Bit Offset : 00
> >> [197h 0407 1] Encoded Access Width : 03 [DWord Access:32]
> >> [198h 0408 8] Address : 00000000C1063008
> >>
> >> [1A0h 0416 8] Value : 0000000000000000
> >> [1A8h 0424 8] Mask : 00000000000000FF
> >>
> >> [1B0h 0432 1] Action : 08 [Get Record Identifier]
> >> [1B1h 0433 1] Instruction : 03 [Write Register Value]
> >> [1B2h 0434 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [1B3h 0435 1] Reserved : 00
> >>
> >> [1B4h 0436 12] Register Region : [Generic Address Structure]
> >> [1B4h 0436 1] Space ID : 00 [SystemMemory]
> >> [1B5h 0437 1] Bit Width : 20
> >> [1B6h 0438 1] Bit Offset : 00
> >> [1B7h 0439 1] Encoded Access Width : 03 [DWord Access:32]
> >> [1B8h 0440 8] Address : 00000000C1063000
> >>
> >> [1C0h 0448 8] Value : 0000000000000008
> >> [1C8h 0456 8] Mask : 00000000000000FF
> >>
> >> [1D0h 0464 1] Action : 08 [Get Record Identifier]
> >> [1D1h 0465 1] Instruction : 00 [Read Register]
> >> [1D2h 0466 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [1D3h 0467 1] Reserved : 00
> >>
> >> [1D4h 0468 12] Register Region : [Generic Address Structure]
> >> [1D4h 0468 1] Space ID : 00 [SystemMemory]
> >> [1D5h 0469 1] Bit Width : 40
> >> [1D6h 0470 1] Bit Offset : 00
> >> [1D7h 0471 1] Encoded Access Width : 04 [QWord Access:64]
> >> [1D8h 0472 8] Address : 00000000C1063008
> >>
> >> [1E0h 0480 8] Value : 0000000000000000
> >> [1E8h 0488 8] Mask : FFFFFFFFFFFFFFFF
> >>
> >> [1F0h 0496 1] Action : 09 [Set Record Identifier]
> >> [1F1h 0497 1] Instruction : 02 [Write Register]
> >> [1F2h 0498 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [1F3h 0499 1] Reserved : 00
> >>
> >> [1F4h 0500 12] Register Region : [Generic Address Structure]
> >> [1F4h 0500 1] Space ID : 00 [SystemMemory]
> >> [1F5h 0501 1] Bit Width : 40
> >> [1F6h 0502 1] Bit Offset : 00
> >> [1F7h 0503 1] Encoded Access Width : 04 [QWord Access:64]
> >> [1F8h 0504 8] Address : 00000000C1063008
> >>
> >> [200h 0512 8] Value : 0000000000000000
> >> [208h 0520 8] Mask : FFFFFFFFFFFFFFFF
> >>
> >> [210h 0528 1] Action : 09 [Set Record Identifier]
> >> [211h 0529 1] Instruction : 03 [Write Register Value]
> >> [212h 0530 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [213h 0531 1] Reserved : 00
> >>
> >> [214h 0532 12] Register Region : [Generic Address Structure]
> >> [214h 0532 1] Space ID : 00 [SystemMemory]
> >> [215h 0533 1] Bit Width : 20
> >> [216h 0534 1] Bit Offset : 00
> >> [217h 0535 1] Encoded Access Width : 03 [DWord Access:32]
> >> [218h 0536 8] Address : 00000000C1063000
> >>
> >> [220h 0544 8] Value : 0000000000000009
> >> [228h 0552 8] Mask : 00000000000000FF
> >>
> >> [230h 0560 1] Action : 0A [Get Record Count]
> >> [231h 0561 1] Instruction : 03 [Write Register Value]
> >> [232h 0562 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [233h 0563 1] Reserved : 00
> >>
> >> [234h 0564 12] Register Region : [Generic Address Structure]
> >> [234h 0564 1] Space ID : 00 [SystemMemory]
> >> [235h 0565 1] Bit Width : 20
> >> [236h 0566 1] Bit Offset : 00
> >> [237h 0567 1] Encoded Access Width : 03 [DWord Access:32]
> >> [238h 0568 8] Address : 00000000C1063000
> >>
> >> [240h 0576 8] Value : 000000000000000A
> >> [248h 0584 8] Mask : 00000000000000FF
> >>
> >> [250h 0592 1] Action : 0A [Get Record Count]
> >> [251h 0593 1] Instruction : 00 [Read Register]
> >> [252h 0594 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [253h 0595 1] Reserved : 00
> >>
> >> [254h 0596 12] Register Region : [Generic Address Structure]
> >> [254h 0596 1] Space ID : 00 [SystemMemory]
> >> [255h 0597 1] Bit Width : 20
> >> [256h 0598 1] Bit Offset : 00
> >> [257h 0599 1] Encoded Access Width : 03 [DWord Access:32]
> >> [258h 0600 8] Address : 00000000C1063008
> >>
> >> [260h 0608 8] Value : 0000000000000000
> >> [268h 0616 8] Mask : 00000000FFFFFFFF
> >>
> >> [270h 0624 1] Action : 0B [Begin Dummy Write]
> >> [271h 0625 1] Instruction : 03 [Write Register Value]
> >> [272h 0626 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [273h 0627 1] Reserved : 00
> >>
> >> [274h 0628 12] Register Region : [Generic Address Structure]
> >> [274h 0628 1] Space ID : 00 [SystemMemory]
> >> [275h 0629 1] Bit Width : 20
> >> [276h 0630 1] Bit Offset : 00
> >> [277h 0631 1] Encoded Access Width : 03 [DWord Access:32]
> >> [278h 0632 8] Address : 00000000C1063000
> >>
> >> [280h 0640 8] Value : 000000000000000B
> >> [288h 0648 8] Mask : 00000000000000FF
> >>
> >> [290h 0656 1] Action : 0D [Get Error Address Range]
> >> [291h 0657 1] Instruction : 03 [Write Register Value]
> >> [292h 0658 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [293h 0659 1] Reserved : 00
> >>
> >> [294h 0660 12] Register Region : [Generic Address Structure]
> >> [294h 0660 1] Space ID : 00 [SystemMemory]
> >> [295h 0661 1] Bit Width : 20
> >> [296h 0662 1] Bit Offset : 00
> >> [297h 0663 1] Encoded Access Width : 03 [DWord Access:32]
> >> [298h 0664 8] Address : 00000000C1063000
> >>
> >> [2A0h 0672 8] Value : 000000000000000D
> >> [2A8h 0680 8] Mask : 00000000000000FF
> >>
> >> [2B0h 0688 1] Action : 0D [Get Error Address Range]
> >> [2B1h 0689 1] Instruction : 00 [Read Register]
> >> [2B2h 0690 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [2B3h 0691 1] Reserved : 00
> >>
> >> [2B4h 0692 12] Register Region : [Generic Address Structure]
> >> [2B4h 0692 1] Space ID : 00 [SystemMemory]
> >> [2B5h 0693 1] Bit Width : 40
> >> [2B6h 0694 1] Bit Offset : 00
> >> [2B7h 0695 1] Encoded Access Width : 04 [QWord Access:64]
> >> [2B8h 0696 8] Address : 00000000C1063008
> >>
> >> [2C0h 0704 8] Value : 0000000000000000
> >> [2C8h 0712 8] Mask : FFFFFFFFFFFFFFFF
> >>
> >> [2D0h 0720 1] Action : 0E [Get Error Address
> >> Length]
> >> [2D1h 0721 1] Instruction : 03 [Write Register Value]
> >> [2D2h 0722 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [2D3h 0723 1] Reserved : 00
> >>
> >> [2D4h 0724 12] Register Region : [Generic Address Structure]
> >> [2D4h 0724 1] Space ID : 00 [SystemMemory]
> >> [2D5h 0725 1] Bit Width : 20
> >> [2D6h 0726 1] Bit Offset : 00
> >> [2D7h 0727 1] Encoded Access Width : 03 [DWord Access:32]
> >> [2D8h 0728 8] Address : 00000000C1063000
> >>
> >> [2E0h 0736 8] Value : 000000000000000E
> >> [2E8h 0744 8] Mask : 00000000000000FF
> >>
> >> [2F0h 0752 1] Action : 0E [Get Error Address
> >> Length]
> >> [2F1h 0753 1] Instruction : 00 [Read Register]
> >> [2F2h 0754 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [2F3h 0755 1] Reserved : 00
> >>
> >> [2F4h 0756 12] Register Region : [Generic Address Structure]
> >> [2F4h 0756 1] Space ID : 00 [SystemMemory]
> >> [2F5h 0757 1] Bit Width : 40
> >> [2F6h 0758 1] Bit Offset : 00
> >> [2F7h 0759 1] Encoded Access Width : 04 [QWord Access:64]
> >> [2F8h 0760 8] Address : 00000000C1063008
> >>
> >> [300h 0768 8] Value : 0000000000000000
> >> [308h 0776 8] Mask : 00000000FFFFFFFF
> >>
> >> [310h 0784 1] Action : 0F [Get Error Attributes]
> >> [311h 0785 1] Instruction : 03 [Write Register Value]
> >> [312h 0786 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [313h 0787 1] Reserved : 00
> >>
> >> [314h 0788 12] Register Region : [Generic Address Structure]
> >> [314h 0788 1] Space ID : 00 [SystemMemory]
> >> [315h 0789 1] Bit Width : 20
> >> [316h 0790 1] Bit Offset : 00
> >> [317h 0791 1] Encoded Access Width : 03 [DWord Access:32]
> >> [318h 0792 8] Address : 00000000C1063000
> >>
> >> [320h 0800 8] Value : 000000000000000F
> >> [328h 0808 8] Mask : 00000000000000FF
> >>
> >> [330h 0816 1] Action : 0F [Get Error Attributes]
> >> [331h 0817 1] Instruction : 00 [Read Register]
> >> [332h 0818 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [333h 0819 1] Reserved : 00
> >>
> >> [334h 0820 12] Register Region : [Generic Address Structure]
> >> [334h 0820 1] Space ID : 00 [SystemMemory]
> >> [335h 0821 1] Bit Width : 20
> >> [336h 0822 1] Bit Offset : 00
> >> [337h 0823 1] Encoded Access Width : 03 [DWord Access:32]
> >> [338h 0824 8] Address : 00000000C1063008
> >>
> >> [340h 0832 8] Value : 0000000000000000
> >> [348h 0840 8] Mask : 00000000FFFFFFFF
> >>
> >> [350h 0848 1] Action : 10 [Execute Timings]
> >> [351h 0849 1] Instruction : 03 [Write Register Value]
> >> [352h 0850 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [353h 0851 1] Reserved : 00
> >>
> >> [354h 0852 12] Register Region : [Generic Address Structure]
> >> [354h 0852 1] Space ID : 00 [SystemMemory]
> >> [355h 0853 1] Bit Width : 20
> >> [356h 0854 1] Bit Offset : 00
> >> [357h 0855 1] Encoded Access Width : 03 [DWord Access:32]
> >> [358h 0856 8] Address : 00000000C1063000
> >>
> >> [360h 0864 8] Value : 0000000000000010
> >> [368h 0872 8] Mask : 00000000000000FF
> >>
> >> [370h 0880 1] Action : 10 [Execute Timings]
> >> [371h 0881 1] Instruction : 00 [Read Register]
> >> [372h 0882 1] Flags (decoded below) : 00
> >> Preserve Register Bits : 0
> >> [373h 0883 1] Reserved : 00
> >>
> >> [374h 0884 12] Register Region : [Generic Address Structure]
> >> [374h 0884 1] Space ID : 00 [SystemMemory]
> >> [375h 0885 1] Bit Width : 40
> >> [376h 0886 1] Bit Offset : 00
> >> [377h 0887 1] Encoded Access Width : 04 [QWord Access:64]
> >> [378h 0888 8] Address : 00000000C1063008
> >>
> >> [380h 0896 8] Value : 0000000000000000
> >> [388h 0904 8] Mask : FFFFFFFFFFFFFFFF
> >>
> >> Raw Table Data: Length 912 (0x390)
> >>
> >> 0000: 45 52 53 54 90 03 00 00 01 C8 42 4F 43 48 53 20 //
> >> ERST......BOCHS
> >> 0010: 42 58 50 43 20 20 20 20 01 00 00 00 42 58 50 43 // BXPC
> >> ....BXPC
> >> 0020: 01 00 00 00 30 00 00 00 00 00 00 00 1B 00 00 00 //
> >> ....0...........
> >> 0030: 00 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0040: 00 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0050: 01 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0060: 01 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0070: 02 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0080: 02 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0090: 03 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 00A0: 03 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 00B0: 04 02 00 00 00 20 00 03 08 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 00C0: 00 00 00 00 00 00 00 00 FF FF FF FF 00 00 00 00 //
> >> ................
> >> 00D0: 04 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 00E0: 04 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 00F0: 05 03 00 00 00 20 00 03 08 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0100: 9C 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0110: 05 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0120: 05 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0130: 06 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0140: 06 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0150: 06 01 00 00 00 20 00 03 08 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0160: 01 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0170: 07 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0180: 07 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0190: 07 00 00 00 00 20 00 03 08 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 01A0: 00 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 01B0: 08 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 01C0: 08 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 01D0: 08 00 00 00 00 40 00 04 08 30 06 C1 00 00 00 00 //
> >> .....@...0......
> >> 01E0: 00 00 00 00 00 00 00 00 FF FF FF FF FF FF FF FF //
> >> ................
> >> 01F0: 09 02 00 00 00 40 00 04 08 30 06 C1 00 00 00 00 //
> >> .....@...0......
> >> 0200: 00 00 00 00 00 00 00 00 FF FF FF FF FF FF FF FF //
> >> ................
> >> 0210: 09 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0220: 09 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0230: 0A 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0240: 0A 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0250: 0A 00 00 00 00 20 00 03 08 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0260: 00 00 00 00 00 00 00 00 FF FF FF FF 00 00 00 00 //
> >> ................
> >> 0270: 0B 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0280: 0B 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0290: 0D 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 02A0: 0D 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 02B0: 0D 00 00 00 00 40 00 04 08 30 06 C1 00 00 00 00 //
> >> .....@...0......
> >> 02C0: 00 00 00 00 00 00 00 00 FF FF FF FF FF FF FF FF //
> >> ................
> >> 02D0: 0E 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 02E0: 0E 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 02F0: 0E 00 00 00 00 40 00 04 08 30 06 C1 00 00 00 00 //
> >> .....@...0......
> >> 0300: 00 00 00 00 00 00 00 00 FF FF FF FF 00 00 00 00 //
> >> ................
> >> 0310: 0F 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0320: 0F 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0330: 0F 00 00 00 00 20 00 03 08 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0340: 00 00 00 00 00 00 00 00 FF FF FF FF 00 00 00 00 //
> >> ................
> >> 0350: 10 03 00 00 00 20 00 03 00 30 06 C1 00 00 00 00 // .....
> >> ...0......
> >> 0360: 10 00 00 00 00 00 00 00 FF 00 00 00 00 00 00 00 //
> >> ................
> >> 0370: 10 00 00 00 00 40 00 04 08 30 06 C1 00 00 00 00 //
> >> .....@...0......
> >> 0380: 00 00 00 00 00 00 00 00 FF FF FF FF FF FF FF FF //
> >> ................
> >>
> >
>