Merge tag 'loongarch-kvm-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhu...

LoongArch KVM changes for v6.7

Add LoongArch's KVM support. Loongson 3A5000/3A6000 supports hardware
assisted virtualization. With cpu virtualization, there are separate
hw-supported user mode and kernel mode in guest mode. With memory
virtualization, there are two-level hw mmu table for guest mode and host
mode. Also there is separate hw cpu timer with consant frequency in
guest mode, so that vm can migrate between hosts with different freq.
Currently, we are able to boot LoongArch Linux Guests.

Few key aspects of KVM LoongArch added by this series are:
1. Enable kvm hardware function when kvm module is loaded.
2. Implement VM and vcpu related ioctl interface such as vcpu create,
   vcpu run etc. GET_ONE_REG/SET_ONE_REG ioctl commands are use to
   get general registers one by one.
3. Hardware access about MMU, timer and csr are emulated in kernel.
4. Hardwares such as mmio and iocsr device are emulated in user space
   such as IPI, irqchips, pci devices etc.

diff --combined MAINTAINERS
index dd5de540ec0b52c4222c6fd1df24d10d3b7d9090,4ef242344028e5d138fc4ee018ccc602645a63f1..7f0d7cc0e693baf691e10422d90619d5883bb3d2
--- 1/MAINTAINERS
--- 2/MAINTAINERS
+++ b/MAINTAINERS
@@@ -378,9 -378,8 +378,9 @@@ F: drivers/acpi/viot.
  F:    include/linux/acpi_viot.h
  
  ACPI WMI DRIVER
 +M:    Armin Wolf <[email protected]>
  L:    [email protected]
 -S:    Orphan
 +S:    Maintained
  F:    Documentation/driver-api/wmi.rst
  F:    Documentation/wmi/
  F:    drivers/platform/x86/wmi.c
@@@ -471,6 -470,7 +471,6 @@@ F: drivers/hwmon/adm1029.
  ADM8211 WIRELESS DRIVER
  L:    [email protected]
  S:    Orphan
 -W:    https://wireless.wiki.kernel.org/
  F:    drivers/net/wireless/admtek/adm8211.*
  
  ADP1653 FLASH CONTROLLER DRIVER
@@@ -1585,17 -1585,6 +1585,17 @@@ F:    arch/arm/include/asm/arch_timer.
  F:    arch/arm64/include/asm/arch_timer.h
  F:    drivers/clocksource/arm_arch_timer.c
  
 +ARM GENERIC INTERRUPT CONTROLLER DRIVERS
 +M:    Marc Zyngier <[email protected]>
 +L:    [email protected] (moderated for non-subscribers)
 +S:    Maintained
 +F:    Documentation/devicetree/bindings/interrupt-controller/arm,gic*
 +F:    arch/arm/include/asm/arch_gicv3.h
 +F:    arch/arm64/include/asm/arch_gicv3.h
 +F:    drivers/irqchip/irq-gic*.[ch]
 +F:    include/linux/irqchip/arm-gic*.h
 +F:    include/linux/irqchip/arm-vgic-info.h
 +
  ARM HDLCD DRM DRIVER
  M:    Liviu Dudau <[email protected]>
  S:    Supported
@@@ -2222,28 -2211,21 +2222,28 @@@ F:   arch/arm/boot/dts/ti/omap/omap3-igep
  ARM/INTEL IXP4XX ARM ARCHITECTURE
  M:    Linus Walleij <[email protected]>
  M:    Imre Kaloz <[email protected]>
 -M:    Krzysztof Halasa <[email protected]>
  L:    [email protected] (moderated for non-subscribers)
  S:    Maintained
  F:    Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
  F:    Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt
  F:    Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
  F:    Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion*
 +F:    Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml
  F:    Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml
  F:    arch/arm/boot/dts/intel/ixp/
  F:    arch/arm/mach-ixp4xx/
  F:    drivers/bus/intel-ixp4xx-eb.c
 +F:    drivers/char/hw_random/ixp4xx-rng.c
  F:    drivers/clocksource/timer-ixp4xx.c
  F:    drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
  F:    drivers/gpio/gpio-ixp4xx.c
  F:    drivers/irqchip/irq-ixp4xx.c
 +F:    drivers/net/ethernet/xscale/ixp4xx_eth.c
 +F:    drivers/net/wan/ixp4xx_hss.c
 +F:    drivers/soc/ixp4xx/ixp4xx-npe.c
 +F:    drivers/soc/ixp4xx/ixp4xx-qmgr.c
 +F:    include/linux/soc/ixp4xx/npe.h
 +F:    include/linux/soc/ixp4xx/qmgr.h
  
  ARM/INTEL KEEMBAY ARCHITECTURE
  M:    Paul J. Murphy <[email protected]>
@@@ -2345,7 -2327,7 +2345,7 @@@ F:      drivers/rtc/rtc-mt7622.
  
  ARM/Mediatek SoC support
  M:    Matthias Brugger <[email protected]>
 -R:    AngeloGioacchino Del Regno <[email protected]>
 +M:    AngeloGioacchino Del Regno <[email protected]>
  L:    [email protected]
  L:    [email protected] (moderated for non-subscribers)
  L:    [email protected] (moderated for non-subscribers)
@@@ -6003,8 -5985,8 +6003,8 @@@ F:      include/linux/devm-helpers.
  DEVICE-MAPPER  (LVM)
  M:    Alasdair Kergon <[email protected]>
  M:    Mike Snitzer <[email protected]>
 -M:    dm-devel@redhat.com
 -L:    dm-devel@redhat.com
 +M:    dm-devel@lists.linux.dev
 +L:    dm-devel@lists.linux.dev
  S:    Maintained
  W:    http://sources.redhat.com/dm
  Q:    http://patchwork.kernel.org/project/dm-devel/list/
@@@ -6766,7 -6748,7 +6766,7 @@@ F:      drivers/gpu/drm/panel/panel-sitronix
  DRM DRIVER FOR SITRONIX ST7703 PANELS
  M:    Guido Günther <[email protected]>
  R:    Purism Kernel Team <[email protected]>
 -R:    Ondrej Jirman <meg[email protected]>
 +R:    Ondrej Jirman <meg[email protected]>
  S:    Maintained
  F:    Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
  F:    drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@@ -8111,7 -8093,7 +8111,7 @@@ F:      include/linux/arm_ffa.
  
  FIRMWARE LOADER (request_firmware)
  M:    Luis Chamberlain <[email protected]>
 -M:    Russ Weight <russ[email protected]>
 +M:    Russ Weight <russ[email protected]>
  L:    [email protected]
  S:    Maintained
  F:    Documentation/firmware_class/
@@@ -9549,8 -9531,10 +9549,8 @@@ F:     Documentation/devicetree/bindings/ii
  F:    drivers/iio/pressure/mprls0025pa.c
  
  HOST AP DRIVER
 -M:    Jouni Malinen <[email protected]>
  L:    [email protected]
  S:    Obsolete
 -W:    http://w1.fi/hostap-driver.html
  F:    drivers/net/wireless/intersil/hostap/
  
  HP BIOSCFG DRIVER
@@@ -10638,6 -10622,22 +10638,6 @@@ L:  [email protected]
  S:    Maintained
  F:    drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
  
 -INTEL IXP4XX QMGR, NPE, ETHERNET and HSS SUPPORT
 -M:    Krzysztof Halasa <[email protected]>
 -S:    Maintained
 -F:    drivers/net/ethernet/xscale/ixp4xx_eth.c
 -F:    drivers/net/wan/ixp4xx_hss.c
 -F:    drivers/soc/ixp4xx/ixp4xx-npe.c
 -F:    drivers/soc/ixp4xx/ixp4xx-qmgr.c
 -F:    include/linux/soc/ixp4xx/npe.h
 -F:    include/linux/soc/ixp4xx/qmgr.h
 -
 -INTEL IXP4XX RANDOM NUMBER GENERATOR SUPPORT
 -M:    Deepak Saxena <[email protected]>
 -S:    Maintained
 -F:    Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml
 -F:    drivers/char/hw_random/ixp4xx-rng.c
 -
  INTEL KEEM BAY DRM DRIVER
  M:    Anitha Chrisanthus <[email protected]>
  M:    Edmund Dea <[email protected]>
@@@ -10701,7 -10701,7 +10701,7 @@@ F:   drivers/mfd/intel-m10-bmc
  F:    include/linux/mfd/intel-m10-bmc.h
  
  INTEL MAX10 BMC SECURE UPDATES
 -M:    Russ Weight <russell.h.weight@intel.com>
 +M:    Peter Colberg <peter.colberg@intel.com>
  L:    [email protected]
  S:    Maintained
  F:    Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
@@@ -11063,7 -11063,7 +11063,7 @@@ F:   Documentation/devicetree/bindings/so
  F:    sound/soc/codecs/sma*
  
  IRQ DOMAINS (IRQ NUMBER MAPPING LIBRARY)
 -M:    Marc Zyngier <[email protected]>
 +M:    Thomas Gleixner <[email protected]>
  S:    Maintained
  T:    git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
  F:    Documentation/core-api/irq/irq-domain.rst
@@@ -11082,6 -11082,7 +11082,6 @@@ F:   lib/group_cpus.
  
  IRQCHIP DRIVERS
  M:    Thomas Gleixner <[email protected]>
 -M:    Marc Zyngier <[email protected]>
  L:    [email protected]
  S:    Maintained
  T:    git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
@@@ -11522,6 -11523,18 +11522,18 @@@ F: include/kvm/arm_
  F:    tools/testing/selftests/kvm/*/aarch64/
  F:    tools/testing/selftests/kvm/aarch64/
  
+ KERNEL VIRTUAL MACHINE FOR LOONGARCH (KVM/LoongArch)
+ M:    Tianrui Zhao <[email protected]>
+ M:    Bibo Mao <[email protected]>
+ M:    Huacai Chen <[email protected]>
+ L:    [email protected]
+ L:    [email protected]
+ S:    Maintained
+ T:    git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
+ F:    arch/loongarch/include/asm/kvm*
+ F:    arch/loongarch/include/uapi/asm/kvm*
+ F:    arch/loongarch/kvm/
+ 
  KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)
  M:    Huacai Chen <[email protected]>
  L:    [email protected]
@@@ -13846,10 -13859,9 +13858,10 @@@ F: Documentation/devicetree/bindings/me
  F:    drivers/staging/media/meson/vdec/
  
  METHODE UDPU SUPPORT
 -M:    Vladimir Vid <vladimir.vid@sartura.hr>
 +M:    Robert Marko <robert.marko@sartura.hr>
  S:    Maintained
 -F:    arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
 +F:    arch/arm64/boot/dts/marvell/armada-3720-eDPU.dts
 +F:    arch/arm64/boot/dts/marvell/armada-3720-uDPU.*
  
  MHI BUS
  M:    Manivannan Sadhasivam <[email protected]>
@@@ -14947,7 -14959,7 +14959,7 @@@ K:   macse
  K:    \bmdo_
  
  NETWORKING [MPTCP]
 -M:    Matthieu Baerts <matt[email protected]>
 +M:    Matthieu Baerts <matt[email protected]>
  M:    Mat Martineau <[email protected]>
  L:    [email protected]
  L:    [email protected]
@@@ -15132,7 -15144,7 +15144,7 @@@ NOLIBC HEADER FIL
  M:    Willy Tarreau <[email protected]>
  M:    Thomas Weißschuh <[email protected]>
  S:    Maintained
 -T:    git git://git.kernel.org/pub/scm/linux/kernel/git/wtarreau/nolibc.git
 +T:    git git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc.git
  F:    tools/include/nolibc/
  F:    tools/testing/selftests/nolibc/
  
@@@ -17602,7 -17614,6 +17614,7 @@@ M:   Kalle Valo <[email protected]
  M:    Jeff Johnson <[email protected]>
  L:    [email protected]
  S:    Supported
 +W:    https://wireless.wiki.kernel.org/en/users/Drivers/ath12k
  T:    git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
  F:    drivers/net/wireless/ath/ath12k/
  
@@@ -18133,6 -18144,8 +18145,6 @@@ REALTEK WIRELESS DRIVER (rtlwifi family
  M:    Ping-Ke Shih <[email protected]>
  L:    [email protected]
  S:    Maintained
 -W:    https://wireless.wiki.kernel.org/
 -T:    git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
  F:    drivers/net/wireless/realtek/rtlwifi/
  
  REALTEK WIRELESS DRIVER (rtw88)
@@@ -18660,6 -18673,7 +18672,6 @@@ F:   drivers/media/dvb-frontends/rtl2832_
  RTL8180 WIRELESS DRIVER
  L:    [email protected]
  S:    Orphan
 -W:    https://wireless.wiki.kernel.org/
  F:    drivers/net/wireless/realtek/rtl818x/rtl8180/
  
  RTL8187 WIRELESS DRIVER
@@@ -18667,12 -18681,14 +18679,12 @@@ M:        Hin-Tak Leung <[email protected]
  M:    Larry Finger <[email protected]>
  L:    [email protected]
  S:    Maintained
 -W:    https://wireless.wiki.kernel.org/
  F:    drivers/net/wireless/realtek/rtl818x/rtl8187/
  
  RTL8XXXU WIRELESS DRIVER (rtl8xxxu)
  M:    Jes Sorensen <[email protected]>
  L:    [email protected]
  S:    Maintained
 -T:    git git://git.kernel.org/pub/scm/linux/kernel/git/jes/linux.git rtl8xxxu-devel
  F:    drivers/net/wireless/realtek/rtl8xxxu/
  
  RTRS TRANSPORT DRIVERS
@@@ -20486,7 -20502,6 +20498,7 @@@ F:   include/dt-bindings/clock/starfive?j
  STARFIVE JH71X0 PINCTRL DRIVERS
  M:    Emil Renner Berthing <[email protected]>
  M:    Jianlong Huang <[email protected]>
 +M:    Hal Feng <[email protected]>
  L:    [email protected]
  S:    Maintained
  F:    Documentation/devicetree/bindings/pinctrl/starfive,jh71*.yaml
@@@ -21655,6 -21670,7 +21667,6 @@@ L:   [email protected]
  S:    Orphan
  W:    https://wireless.wiki.kernel.org/en/users/Drivers/wl12xx
  W:    https://wireless.wiki.kernel.org/en/users/Drivers/wl1251
 -T:    git git://git.kernel.org/pub/scm/linux/kernel/git/luca/wl12xx.git
  F:    drivers/net/wireless/ti/
  
  TIMEKEEPING, CLOCKSOURCE CORE, NTP, ALARMTIMER