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qemu/include/hw
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Nicholas Piggin ccc5a4c5e1 spapr: Add SPAPR_CAP_AIL_MODE_3 for AIL mode 3 support for H_SET_MODE hcall 
The behaviour of the Address Translation Mode on Interrupt resource is
not consistently supported by all CPU versions or all KVM versions: KVM
HV does not support mode 2, and does not support mode 3 on POWER7 or
early POWER9 processesors. KVM PR only supports mode 0. TCG supports all
modes (0, 2, 3) on CPUs with support for the corresonding LPCR[AIL] mode.
This leads to inconsistencies in guest behaviour and could cause problems
migrating guests.

This was not noticable for Linux guests for a long time because the
kernel only uses modes 0 and 3, and it used to consider AIL-3 to be
advisory in that it would always keep the AIL-0 vectors around, so it
did not matter whether or not interrupts were delivered according to
the AIL mode. Recent Linux guests depend on AIL mode 3 working as
specified in order to support the SCV facility interrupt. If AIL-3 can
not be provided, then H_SET_MODE must return an error to Linux so it can
disable the SCV facility (failure to do so can lead to userspace being
able to crash the guest kernel).

Add the ail-mode-3 capability to specify that AIL-3 is supported. AIL-0
is implied as the baseline, and AIL-2 is no longer supported by spapr.
AIL-2 is not known to be used by any software, but support in TCG could
be restored with an ail-mode-2 capability quite easily if a regression
is reported.

Modify the H_SET_MODE Address Translation Mode on Interrupt resource
handler to check capabilities and correctly return error if not
supported.

KVM has a cap to advertise support for AIL-3.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20230515160216.394612-1-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2023-05-28 07:13:54 -03:00
..
acpi tpm: Extend common APIs to support TPM TIS I2C 2023-04-20 08:17:15 -04:00
adc hw/arm/npcm7xx: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
arm hw/arm/boot: Make write_bootloader() public as arm_write_bootloader() 2023-05-02 15:47:40 +01:00
audio introduce -audio as a replacement for -soundhw 2022-05-14 12:33:44 +02:00
block hw/block: replace TABs with space 2023-03-24 11:45:46 +01:00
char hw/char/parallel: Move TYPE_ISA_PARALLEL to the header file 2023-05-22 09:44:48 +02:00
core cpu: Introduce a wrapper for being able to use TARGET_NAME in common code 2023-05-16 09:14:18 +02:00
cpu Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
cris include: Include headers where needed 2023-01-08 01:54:22 -05:00
cxl hw/cxl: Introduce cxl_device_get_timestamp() utility function 2023-05-19 10:30:46 -04:00
display include: Include headers where needed 2023-01-08 01:54:22 -05:00
dma include: Include headers where needed 2023-01-08 01:54:22 -05:00
firmware hw/smbios: add core_count2 to smbios table type 4 2022-11-07 14:08:17 -05:00
gpio hw/gpio: replace HWADDR_PRIx with PRIx64 2022-05-25 10:31:33 +02:00
hyperv hw/hyperv/vmbus: Remove unused vmbus_load/save_req() 2022-05-30 19:49:42 +02:00
i2c qtest: Add functions for accessing devices on Aspeed I2C controller 2023-04-20 08:17:15 -04:00
i386 hw: Move the default NIC machine class setting from the x86 to the generic one 2023-05-22 09:39:15 +02:00
ide hw/ide: replace TABs with space 2023-03-24 11:45:33 +01:00
input hw/input: Clean up includes 2023-02-08 07:16:23 +01:00
intc hw/loongarch/virt: Set max 256 cpus support on loongarch virt machine 2023-05-15 19:09:33 +08:00
ipack ipack: Rename ipack_bus_new_inplace() to ipack_bus_init() 2021-09-30 13:42:10 +01:00
ipmi Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
isa hw/audio/via-ac97: Basic implementation of audio playback 2023-03-08 00:37:48 +01:00
kvm target/i386: always create kvmclock device 2020-09-30 19:11:36 +02:00
loongarch hw/loongarch/virt: Set max 256 cpus support on loongarch virt machine 2023-05-15 19:09:33 +08:00
m68k hw/m68k/mcf: Add missing 'exec/hwaddr.h' header 2022-02-21 10:35:13 +01:00
mem acpi/nvdimm: Define trace events for NVDIMM and substitute nvdimm_debug() 2022-07-26 10:37:46 -04:00
mips hw/mips/bootloader: Handle buffers as opaque arrays 2023-01-13 09:32:32 +01:00
misc hw/arm/bcm2835_property: Implement "get command line" message 2023-05-02 15:47:40 +01:00
net hw/net/imx_fec: Support two Ethernet interfaces connected to single MDIO bus 2023-04-20 10:25:43 +01:00
nubus Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
nvram Revert "x86: return modified setup_data only if read as memory, not as file" 2023-03-02 03:10:46 -05:00
openrisc hw/openrisc: Split re-usable boot time apis out to boot.c 2022-09-04 07:02:56 +01:00
pci hw/pci: Disable PCI_ERR_UNCOR_MASK register for machine type < 8.0 2023-05-19 10:30:46 -04:00
pci-bridge pci/pci_expander_bridge: For CXL HB delay the HB register memory region setup. 2022-06-09 19:32:49 -04:00
pci-host hw/pci-host/pam: Make init_pam() usage more readable 2023-05-19 10:30:46 -04:00
ppc spapr: Add SPAPR_CAP_AIL_MODE_3 for AIL mode 3 support for H_SET_MODE hcall 2023-05-28 07:13:54 -03:00
rdma qapi: introduce x-query-rdma QMP command 2021-11-02 15:55:14 +00:00
remote include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
riscv hw/riscv/virt: Enable basic ACPI infrastructure 2023-03-06 11:35:04 -08:00
rtc hw/rtc: Rename rtc_[get|set]_memory -> mc146818rtc_[get|set]_cmos_data 2023-02-27 22:29:02 +01:00
rx Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
s390x s390x/pv: Fix spurious warning with asynchronous teardown 2023-05-16 09:14:18 +02:00
scsi replace TABs with spaces 2023-03-20 12:43:50 +01:00
sd replace TABs with spaces 2023-03-20 12:43:50 +01:00
sensor hw/sensor: Add IC_DEVICE_ID to ISL voltage regulators 2022-07-14 16:24:38 +02:00
sh4 hw/intc/sh_intc: Inline and drop sh_intc_source() function 2021-10-30 18:39:37 +02:00
southbridge hw/i386/pc: Create RTC controllers in south bridges 2023-05-19 10:30:46 -04:00
sparc hw: Replace anti-social QOM type names 2021-03-19 15:18:43 +01:00
ssi Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
timer hw: Replace isa_get_irq() by isa_bus_get_irq() when ISABus is available 2023-02-27 22:29:02 +01:00
tricore Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
usb include: Include headers where needed 2023-01-08 01:54:22 -05:00
vfio vfio/migration: Rename entry points 2023-03-07 11:19:07 -07:00
virtio virtio-pci: add handling of PCI ATS and Device-TLB enable/disable 2023-05-19 10:30:46 -04:00
watchdog hw/watchdog: Allwinner WDT emulation for system reset 2023-04-20 10:21:13 +01:00
xen hw/xen: Rename xen_common.h to xen_native.h 2023-03-07 17:04:30 +00:00
xtensa Include hw/irq.h a lot less 2019-08-16 13:31:52 +02:00
boards.h hw: Move the default NIC machine class setting from the x86 to the generic one 2023-05-22 09:39:15 +02:00
clock.h host-utils: add 128-bit quotient support to divu128/divs128 2021-10-27 17:10:00 -07:00
elf_ops.h replace TABs with spaces 2023-03-20 12:43:50 +01:00
fw-path-provider.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
hotplug.h pci: fix 'hotplugglable' property behavior 2023-03-07 12:38:59 -05:00
hw.h compiler.h: replace QEMU_NORETURN with G_NORETURN 2022-04-21 17:03:51 +04:00
ide.h hw/ide: Declare ide_get_[geometry/bios_chs_trans] in 'hw/ide/internal.h' 2023-02-27 22:29:02 +01:00
irq.h hw/core/irq: remove unused 'qemu_irq_split' function 2022-04-21 11:37:04 +01:00
loader-fit.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
loader.h hw: arm: Support direct boot for Linux/arm64 EFI zboot images 2023-03-06 14:08:12 +00:00
nmi.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
or-irq.h hw: Replace qemu_or_irq typedef by OrIRQState 2023-02-27 13:27:05 +00:00
pcmcia.h replace TABs with spaces 2023-03-20 12:43:50 +01:00
platform-bus.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
ptimer.h ptimer: Rename PTIMER_POLICY_DEFAULT to PTIMER_POLICY_LEGACY 2022-05-19 16:19:03 +01:00
qdev-clock.h clock: Add ClockEvent parameter to callbacks 2021-03-08 17:20:01 +00:00
qdev-core.h memory: prevent dma-reentracy issues 2023-04-28 11:20:01 +02:00
qdev-dma.h Supply missing header guards 2019-06-12 13:20:21 +02:00
qdev-properties-system.h qdev: Reuse DEFINE_PROP in all DEFINE_PROP_* macros 2020-12-18 15:20:17 -05:00
qdev-properties.h qdev-properties: Add a new macro with bitmask check for uint64_t property 2022-05-14 12:32:41 +02:00
register.h hw/core/register: Add more 64-bit utilities 2021-09-01 11:59:12 +10:00
registerfields.h hw/registerfields: Add shared fields macros 2022-06-22 09:49:34 +02:00
resettable.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
stream.h hw/core/stream: Rename StreamSlave as StreamSink 2020-12-10 12:15:04 -05:00
sysbus.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
usb.h hw/usb: fix tab indentation 2022-11-08 11:13:48 +01:00
vmstate-if.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00