Re: [PATCH v2 00/11] NVDIMM ACPI: introduce the framework of QEMU emulated

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Hi Michael, Igor, Paolo,

Any comment?



On 01/13/2016 02:49 AM, Xiao Guangrong wrote:
This patchset is against commit 8a1be662a69 (virtio: fix error message for
number of queues) on pci branch of Michael's git tree
and can be found at:
       https://github.com/xiaogr/qemu.git nvdimm-acpi-v2

Changelog:
These changes are based on Igor's comments:
- drop ssdt.rev2 support as the memory address allocated by BIOS/OVMF
   are always 32 bits
- support to test NVDIMM tables (NFIT and NVDIMM SSDT)
- add _CRS to report its operation region
- make AML APIs change be the separated patches

This is the second part of vNVDIMM implementation which implements the
BIOS patched dsm memory and introduces the framework that allows QEMU
to emulate DSM method

Thanks to Michael's idea, we do not reserve any memory for NVDIMM ACPI,
instead we let BIOS allocate the memory and patch the address to the
offset we want

IO port is still enabled as it plays as the way to notify QEMU and pass
the patched dsm memory address, so that IO port region, 0x0a18 - 0xa20,
is reserved and it is divided into two 32 bits ports and used to pass
the low 32 bits and high 32 bits of dsm memory address to QEMU

Thanks Igor's idea, this patchset also extends DSDT/SSDT to revision 2
to apply 64 bit operations, in order to keeping compatibility, old
version (<= 2.5) still uses revision 1. Since 64 bit operations breaks
old guests (such as windows XP), we should keep the 64 bits stuff in
the private place where common ACPI operation does not touch it

Xiao Guangrong (11):
   tests: acpi: test multiple SSDT tables
   tests: acpi: test NVDIMM tables
   acpi: add aml_create_field()
   acpi: add aml_concatenate()
   acpi: allow using object as offset for OperationRegion
   nvdimm acpi: initialize the resource used by NVDIMM ACPI
   nvdimm acpi: introduce patched dsm memory
   nvdimm acpi: let qemu handle _DSM method
   nvdimm acpi: emulate dsm method
   nvdimm acpi: add _CRS
   tests: acpi: update nvdimm ssdt table

  hw/acpi/Makefile.objs                       |   2 +-
  hw/acpi/aml-build.c                         |  33 +++-
  hw/acpi/nvdimm.c                            | 255 +++++++++++++++++++++++++++-
  hw/i386/acpi-build.c                        |  41 ++---
  hw/i386/pc.c                                |   8 +-
  hw/i386/pc_piix.c                           |   5 +
  hw/i386/pc_q35.c                            |   8 +-
  include/hw/acpi/aml-build.h                 |   5 +-
  include/hw/i386/pc.h                        |   5 +-
  include/hw/mem/nvdimm.h                     |  36 +++-
  tests/acpi-test-data/pc/NFIT                | Bin 0 -> 224 bytes
  tests/acpi-test-data/pc/NFIT.bridge         | Bin 0 -> 224 bytes
  tests/acpi-test-data/pc/SSDT                | Bin 2486 -> 2885 bytes
  tests/acpi-test-data/pc/SSDT-NVDIMM         | Bin 0 -> 403 bytes
  tests/acpi-test-data/pc/SSDT-NVDIMM.bridge  | Bin 0 -> 403 bytes
  tests/acpi-test-data/pc/SSDT.bridge         | Bin 4345 -> 4745 bytes
  tests/acpi-test-data/q35/NFIT               | Bin 0 -> 224 bytes
  tests/acpi-test-data/q35/NFIT.bridge        | Bin 0 -> 224 bytes
  tests/acpi-test-data/q35/SSDT               | Bin 691 -> 1090 bytes
  tests/acpi-test-data/q35/SSDT-NVDIMM        | Bin 0 -> 403 bytes
  tests/acpi-test-data/q35/SSDT-NVDIMM.bridge | Bin 0 -> 403 bytes
  tests/acpi-test-data/q35/SSDT.bridge        | Bin 708 -> 1107 bytes
  tests/bios-tables-test.c                    |  58 +++++--
  23 files changed, 400 insertions(+), 56 deletions(-)
  create mode 100644 tests/acpi-test-data/pc/NFIT
  create mode 100644 tests/acpi-test-data/pc/NFIT.bridge
  create mode 100644 tests/acpi-test-data/pc/SSDT-NVDIMM
  create mode 100644 tests/acpi-test-data/pc/SSDT-NVDIMM.bridge
  create mode 100644 tests/acpi-test-data/q35/NFIT
  create mode 100644 tests/acpi-test-data/q35/NFIT.bridge
  create mode 100644 tests/acpi-test-data/q35/SSDT-NVDIMM
  create mode 100644 tests/acpi-test-data/q35/SSDT-NVDIMM.bridge

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