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Nicholas Piggin 120f738a46 spapr: implement nested-hv capability for the virtual hypervisor 
This implements the Nested KVM HV hcall API for spapr under TCG.

The L2 is switched in when the H_ENTER_NESTED hcall is made, and the
L1 is switched back in returned from the hcall when a HV exception
is sent to the vhyp. Register state is copied in and out according to
the nested KVM HV hcall API specification.

The hdecr timer is started when the L2 is switched in, and it provides
the HDEC / 0x980 return to L1.

The MMU re-uses the bare metal radix 2-level page table walker by
using the get_pate method to point the MMU to the nested partition
table entry. MMU faults due to partition scope errors raise HV
exceptions and accordingly are routed back to the L1.

The MMU does not tag translations for the L1 (direct) vs L2 (nested)
guests, so the TLB is flushed on any L1<->L2 transition (hcall entry
and exit).

Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
[ clg: checkpatch fixes ]
Message-Id: <20220216102545.1808018-10-npiggin@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-02-18 08:34:14 +01:00
..
9pfs 9pfs: use P9Array in v9fs_walk() 2021-10-27 14:45:22 +02:00
acpi ACPI ERST: build the ACPI ERST table 2022-02-06 04:33:50 -05:00
adc hw/adc: Add basic Aspeed ADC model 2021-10-12 08:20:08 +02:00
alpha
arm hw/arm/smmuv3: Fix device reset 2022-02-08 10:56:28 +00:00
audio Remove unnecessary minimum_version_id_old fields 2022-01-28 15:38:23 +01:00
avr hw/avr: Realize AVRCPU qdev object using qdev_realize() 2021-12-17 10:43:24 +01:00
block Pull request 2022-02-15 19:30:33 +00:00
char hw/char/exynos4210_uart: Fix crash on trying to load VM state 2022-01-28 14:29:46 +00:00
core Allow setting up to 8 bytes with the generic loader 2022-02-16 12:24:18 +10:00
cpu
cris
display Fixes and updates for hppa target 2022-02-02 19:54:30 +00:00
dma Migration Pull request (Take 2) 2022-01-29 15:55:54 +00:00
gpio Remove unnecessary minimum_version_id_old fields 2022-01-28 15:38:23 +01:00
hppa hppa: Add support for an emulated TOC/NMI button. 2022-02-02 18:46:42 +01:00
hyperv dma: Let dma_memory_map() take MemTxAttrs argument 2021-12-30 17:16:32 +01:00
i2c aspeed/i2c: QOMify AspeedI2CBus 2021-10-12 08:20:08 +02:00
i386 ACPI ERST: create ACPI ERST table for pc/x86 machines 2022-02-06 04:33:50 -05:00
ide hw/dma: Let dma_buf_read() / dma_buf_write() propagate MemTxResult 2022-01-18 12:56:29 +01:00
input ps2: Initial horizontal scroll support 2022-01-13 15:33:18 +01:00
intc hw/intc: Add RISC-V AIA APLIC device emulation 2022-02-16 12:24:19 +10:00
ipack qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
ipmi
isa vt82c686: Add a method to VIA_ISA to raise ISA interrupts 2021-10-18 00:41:36 +02:00
m68k m68k: virt: correctly set the initial PC 2022-01-20 09:09:37 +01:00
mem nvdimm: Add realize, unrealize callbacks to NVDIMMDevice class 2022-02-18 08:34:13 +01:00
microblaze hw/microblaze: Replace drive_get_next() by drive_get() 2021-12-15 08:38:16 +01:00
mips hw/mips/jazz: Inline vga_mmio_init() and remove it 2022-01-13 10:58:54 +01:00
misc Migration Pull request (Take 2) 2022-01-29 15:55:54 +00:00
net hw/net: e1000e: Clear ICR on read when using non MSI-X interrupts 2022-02-14 11:50:44 +08:00
nios2
nubus qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
nvme hw/nvme: add support for zoned random write area 2022-02-14 08:58:29 +01:00
nvram hw/nvram: Restrict fw_cfg QOM interface to sysemu and tools 2022-01-18 10:45:35 +01:00
openrisc
pci pcie_aer: Don't trigger a LSI if none are defined 2022-01-07 05:19:55 -05:00
pci-bridge qdev: Make DeviceState.id independent of QemuOpts 2021-10-15 16:06:35 +02:00
pci-host ppc/pnv: use a do-while() loop in pnv_phb4_translate_tve() 2022-01-28 13:15:02 +01:00
pcmcia
ppc spapr: implement nested-hv capability for the virtual hypervisor 2022-02-18 08:34:14 +01:00
rdma hw/dma: Use dma_addr_t type definition when relevant 2022-01-18 12:56:29 +01:00
remote hw/remote/proxy: Categorize Wireless devices as 'Network' ones 2021-10-04 09:47:26 +02:00
riscv hw/riscv: virt: Use AIA INTC compatible string when available 2022-02-16 12:24:19 +10:00
rtc rtc: Move RTC function prototypes to their own header 2022-01-28 14:29:46 +00:00
rx
s390x rtc: Move RTC function prototypes to their own header 2022-01-28 14:29:46 +00:00
scsi Migration Pull request (Take 2) 2022-01-29 15:55:54 +00:00
sd hw/sd: Add SDHC support for SD card SPI-mode 2022-01-04 08:50:28 +01:00
sensor hw/sensor: Add lsm303dlhc magnetometer device 2022-02-08 10:56:29 +00:00
sh4 hw/intc/sh_intc: Inline and drop sh_intc_source() function 2021-10-30 18:39:37 +02:00
smbios smbios: Rename SMBIOS_ENTRY_POINT_* enums 2022-01-07 05:19:55 -05:00
sparc sun4m: fix setting CPU id when more than one CPU is present 2021-09-08 11:09:45 +01:00
sparc64 hw: Replace trivial drive_get_next() by drive_get() 2021-12-15 08:38:16 +01:00
ssi hw/ssi: Add a model of Xilinx Versal's OSPI flash memory controller 2022-01-28 14:29:46 +00:00
timer hw/timer/armv7m_systick: Update clock source before enabling timer 2022-02-08 10:56:28 +00:00
tpm tpm: mark correct memory region range dirty when clearing RAM 2021-10-02 08:43:21 +02:00
tricore
usb uas: add missing return 2022-01-13 10:58:05 +01:00
vfio vfio: Fix memory leak of hostwin 2021-11-17 11:25:55 -07:00
virtio Remove unnecessary minimum_version_id_old fields 2022-01-28 15:38:23 +01:00
watchdog watchdog: remove select_watchdog_action 2021-11-02 15:57:27 +01:00
xen aio-posix: split poll check from ready handler 2022-01-12 17:09:39 +00:00
xenpv
xtensa
Kconfig hw/arm: xlnx-zcu102: Add Xilinx eFUSE device 2021-09-30 13:42:10 +01:00
meson.build