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qemu-patch-raspberry4/hw
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Liran Alon 14cda3503d acpi: Add Windows ACPI Emulated Device Table (WAET) 
Microsoft introduced this ACPI table to avoid Windows guests performing
various workarounds for device erratas. As the virtual device emulated
by VMM may not have the errata.

Currently, WAET allows hypervisor to inform guest about two
specific behaviors: One for RTC and the other for ACPI PM timer.

Support for WAET have been introduced since Windows Vista. This ACPI
table is also exposed by other common hypervisors by default, including:
VMware, GCP and AWS.

This patch adds WAET ACPI Table to QEMU.

We set "ACPI PM timer good" bit in "Emualted Device Flags" field to
indicate that the ACPI PM timer has been enhanced to not require
multiple reads to obtain a reliable value.
This results in improving the performance of Windows guests that use
ACPI PM timer by avoiding unnecessary VMExits caused by these multiple
reads.

Co-developed-by: Elad Gabay <elad.gabay@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Message-Id: <20200313145009.144820-3-liran.alon@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
2020-05-04 10:25:03 -04:00
..
9pfs 9p/proxy: Fix export_flags 2020-03-10 16:12:49 +01:00
acpi hw/arm/virt: Add nvdimm hotplug support 2020-05-04 10:25:02 -04:00
adc hw/*/Makefile.objs: Move many .o files to common-objs 2020-02-04 09:00:57 +01:00
alpha hw/ide: Do ide_drive_get() within pci_ide_create_devs() 2020-03-17 12:22:36 -04:00
arm hw/arm/virt: Add nvdimm hotplug support 2020-05-04 10:25:02 -04:00
audio hw/audio/fmopl: fix segmentation fault 2020-03-25 09:55:40 +01:00
block vhost-user-blk: fix invalid memory access 2020-05-04 10:25:02 -04:00
char hw/char/cadence_uart: add clock support 2020-04-30 15:35:41 +01:00
core target-arm queue: 2020-04-30 15:45:34 +01:00
cpu cpu/arm11mpcore: Set number of GIC priority bits to 4 2020-02-28 16:14:57 +00:00
cris hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
display virtio-vga: fix virtio-vga bar ordering 2020-05-04 10:25:02 -04:00
dma dma/xlnx-zdma: Fix descriptor loading (REG) wrt endianness 2020-04-30 11:52:25 +01:00
gpio hw/gpio/aspeed_gpio.c: Don't directly include assert.h 2020-04-03 19:24:53 +01:00
hppa hw/ide: Remove unneeded inclusion of hw/ide.h 2020-03-17 12:22:36 -04:00
hyperv add device_legacy_reset function to prepare for reset api change 2020-01-30 16:02:03 +00:00
i2c smbus: Fix spd_data_generate() for number of banks > 2 2020-04-29 08:01:52 +02:00
i386 acpi: Add Windows ACPI Emulated Device Table (WAET) 2020-05-04 10:25:03 -04:00
ide cmd646-ide: use qdev gpio rather than qemu_allocate_irqs() 2020-03-27 14:30:08 -04:00
input hw/input: Do not enable CONFIG_PCKBD by default 2020-02-04 09:01:31 +01:00
intc bugfix: Use gicr_typer in arm_gicv3_icc_reset 2020-04-30 11:52:27 +01:00
ipack qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
ipmi qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
isa acpi: add ISADeviceClass->build_aml() 2020-05-04 10:25:02 -04:00
lm32 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
m68k hw/m68k: Use memory_region_init_rom() with read-only regions 2020-03-17 15:18:47 +01:00
mem hw/arm/virt: Add nvdimm hot-plug infrastructure 2020-05-04 10:25:02 -04:00
microblaze hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
mips smbus: Fix spd_data_generate() error API violation 2020-04-29 08:01:52 +02:00
misc hw/misc/zynq_slcr: add clock generation for uarts 2020-04-30 15:35:41 +01:00
moxie hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
net target-arm queue: 2020-04-30 15:45:34 +01:00
nios2 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
nubus hw/m68k: add Nubus support 2019-10-28 19:06:47 +01:00
nvram fw_cfg: Migrate ACPI table mr sizes separately 2020-04-13 06:55:54 -04:00
openrisc hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
pci hw/pci/pcie: Replace PCI_DEVICE() casts with existing variable 2020-05-04 10:25:02 -04:00
pci-bridge pcie_root_port: Add hotplug disabling option 2020-03-08 09:18:29 -04:00
pci-host hw/pci-host: Use memory_region_init_rom() with read-only regions 2020-03-17 15:18:47 +01:00
pcmcia hw/*/Makefile.objs: Move many .o files to common-objs 2020-02-04 09:00:57 +01:00
ppc bamboo, sam460ex: Tidy up error message for unsupported RAM size 2020-04-29 08:01:52 +02:00
rdma hw/rdma: Destroy list mutex when list is destroyed 2020-05-02 21:31:17 +03:00
riscv hw/riscv/spike: Allow more than one CPUs 2020-04-29 13:16:38 -07:00
rtc rtc: add RTC_ISA_BASE 2020-05-04 10:25:02 -04:00
s390x s390x/s390-virtio-ccw: Fix build on systems without KVM 2020-04-29 14:36:19 +02:00
scsi various: Remove suspicious '\' character outside of #define in C code 2020-04-29 08:01:51 +02:00
sd various: Remove suspicious '\' character outside of #define in C code 2020-04-29 08:01:51 +02:00
semihosting semihosting: add qemu_semihosting_console_inc for SYS_READC 2020-01-09 11:41:29 +00:00
sh4 hw/sh4: Use memory_region_init_rom() with read-only regions 2020-03-17 15:18:47 +01:00
smbios hw/smbios/smbios: Remove unused include 2020-02-06 10:38:57 +01:00
sparc hw/sparc: Use memory_region_init_rom() with read-only regions 2020-03-17 15:18:48 +01:00
sparc64 hw/ide: Do ide_drive_get() within pci_ide_create_devs() 2020-03-17 12:22:36 -04:00
ssi aspeed/smc: Fix DMA support for AST2600 2020-03-23 17:22:30 +00:00
timer hw/timer/hpet: Include "exec/address-spaces.h" 2020-03-09 15:59:31 +01:00
tpm tpm: Add the SysBus TPM TIS device 2020-03-05 12:18:08 -05:00
tricore hw: Do not initialize MachineClass::is_default to 0 2020-02-28 14:57:19 -05:00
unicore32 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
usb hw/usb/xen-usb.c: Pass struct usbback_req* to usbback_packet_complete() 2020-04-07 16:13:26 +01:00
vfio vfio/spapr: Fix page size calculation 2020-04-07 08:55:10 +10:00
virtio Refactor vhost_user_set_mem_table functions 2020-05-04 10:25:03 -04:00
watchdog qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
xen xen/pt: Fix flawed conversion to realize() 2020-04-29 08:01:52 +02:00
xenpv trivial: Remove xenfb_enabled from sysemu.h 2020-02-04 09:00:57 +01:00
xtensa hw/xtensa/xtfpga:fix leak of fdevice tree blob 2020-02-19 10:33:38 +01:00
Kconfig Remove the core bluetooth code 2019-12-17 09:01:14 +01:00
Makefile.objs Remove the core bluetooth code 2019-12-17 09:01:14 +01:00