As part of moving to dynamic DSDT and dropping
ASL templates althogether this series moves out
ASL part of memory hotplug from DSDT into a custom
ACPI table. Beside of reducing ASL codebase (DSDT)
series tries to generalize and consolidate ACPI
part of memory hotplug code so it could be easier
to reuse it with outher targets (I plan to do it
for ARM later).
New table uses 64-bit integers for simplification
of code that are available only since ACPI 2.0.
To avoid breaking Windows XP based (rev1) guests
that table is loaded only if guest supports 2.0
revision Using LoadTable() ASL method.
As a side effect of code consolidation/simplification
series reduces ACPI tables size on:
- 879 bytes without memory hotplug
- 1216 bytes with 256 hotpluggable memory slots
More detailed breakdown on max table sizes in default
and hotplug enabled cases:
new+HP new old old+HP
MHPT 50808 - - -
SSDT 2425 2368 2486 53688
DSDT 2267 2267 3028 3028
Tested with following guests:
- RHEL7.2,
- Windows XPsp3, Windows Server 2003EE,
- Windows Server 2008DC, Windows Server 2012R2DC
Since memory hotpulg doesn't work on XP based guests,
I've just tested that it boots just fine with/without
memory hotplug enabled on QEMU side.
The rest of the guests work as expected.
git tree for testing:
https://github.com/imammedo/qemu/commits/mhpt_table_v1
Igor Mammedov (18):
acpi: aml: add aml_lgreater_equal() and aml_load_table()
acpi: aml: add aml_create_qword_field()
acpi: aml: add aml_decrement() and aml_subtract()
acpi: aml: add aml_call0() helper
pc: acpi: move SSDT part of memhp into a custom table
pc: acpi: memhp: move MHPD._STA method into MHPT table
pc: acpi: memhp: move MHPD.MLCK mutex into NHPT table
pc: acpi: memhp: move MHPD.MSCN method into MHPT table
pc: acpi: make memory device's _UID integer
pc: acpi: memhp: move MHPD.MRST method into MHPT table
pc: acpi: memhp: move MHPD.MPXM method into MHPT table
pc: acpi: memhp: move MHPD.MOST method into MHPT table
pc: acpi: memhp: move MHPD.MEJ0 method into MHPT table
pc: acpi: bump DSDT revision compliance to v2
pc: acpi: memhp: move MHPD.MCRS method into MHPT table
pc: acpi: memhp: move MHPD Device along with _UID/_HID into MHPT table
pc: acpi: memhp: remove acpi-dsdt-mem-hotplug.dsl and move \_GPE._E03
into SSDT
pc: acpi: memhp: cleanup MEMORY_HOTPLUG_IO_REGION usage
Xiao Guangrong (1):
acpi: add aml_mutex(), aml_acquire(), aml_release()
hw/acpi/Makefile.objs | 2 +-
hw/acpi/aml-build.c | 115 ++++++++++++++-
hw/acpi/memory_hotplug_acpi_table.c | 286 ++++++++++++++++++++++++++++++++++++
hw/i386/acpi-build.c | 140 ++++--------------
hw/i386/acpi-dsdt-mem-hotplug.dsl | 171 ---------------------
hw/i386/acpi-dsdt.dsl | 7 +-
hw/i386/q35-acpi-dsdt.dsl | 7 +-
include/hw/acpi/aml-build.h | 9 ++
include/hw/acpi/memory_hotplug.h | 8 +
include/hw/acpi/pc-hotplug.h | 24 ---
10 files changed, 443 insertions(+), 326 deletions(-)
create mode 100644 hw/acpi/memory_hotplug_acpi_table.c
delete mode 100644 hw/i386/acpi-dsdt-mem-hotplug.dsl
--
1.8.3.1
