【虚拟化】kernel OLK-5.10 supports KVM RISC-V

测试RISC-V虚拟化功能

启动虚拟机
1.1 为仿真器配置虚拟网桥
$brctl addbr virbr0$ brctl stp virbr0 on
$ifconfig virbr0 up$ ifconfig virbr0 192.168.122.1 netmask 255.255.255.0

1.2 启动仿真器
$ ./qemu-system-riscv64 -M virt -m 4096M -cpu rv64,x-h=true -nographic
-name guest=riscv-hyp,debug-threads=on
-smp 4
-bios ./fw_jump.bin
-kernel ./Image
-drive file=./hypervisor.img,format=raw,id=hd0
-device virtio-blk-device,drive=hd0
-append "root=/dev/vda rw console=ttyS0 earlycon=sbi"
-netdev type=tap,script=./ifup.sh,downscript=./ifdown.sh,id=net0
-device virtio-net-device,netdev=net0
结果如下：
输入图片说明

1.3 启动RISC-V虚拟机
$ ./qemu-system-riscv64 -M virt,accel=kvm -m 512M -cpu host -nographic
-name guest=riscv-guest
-bios none
-smp 2
-kernel ./Image
-drive file=./guest.img,format=raw,id=hd0
-device virtio-blk,drive=hd0
-append "root=/dev/vda rw console=ttyS0 earlycon=sbi"
结果如下：
输入图片说明

热迁移
2.1 在仿真器1上启动源端虚拟机
$./qemu-system-riscv64 -M virt,accel=kvm -m 512M -cpu host -nographic -name guest=riscv-guest -bios none -smp 2 -kernel ./Image -drive file=./guest.img,format=raw,id=hd0 -device virtio-blk,drive=hd0 -append "root=/dev/vda rw console=ttyS0 earlycon=sbi" -monitor tcp:0:55555,server,nowait 2.2 在仿真器2上启动对端虚拟机，等待源端迁移$ ./qemu-system-riscv64 -M virt,accel=kvm -m 512M -cpu host -nographic
-name guest=riscv-guest
-bios none
-smp 2
-kernel ./Image
-drive file=./guest.img,format=raw,id=hd0
-device virtio-blk,drive=hd0
-append "root=/dev/vda rw console=ttyS0 earlycon=sbi"
-device i6300esb,id=watchdog
-serial tcp:0:33333,server,nowait
-incoming tcp:0:44444
-monitor tcp:0:55555,server,nowait

2.3 登录仿真器1，启动热迁移
$ socat -,echo=0,icanon=0 tcp-connect:192.168.122.2:55555
(qemu) migrate -d -i tcp:192.168.122.3:44444

2.4 登录热迁移后的虚拟机
$ socat -,echo=0,icanon=0 tcp-connect:192.168.122.3:33333
结果如下：
输入图片说明

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已合入如下相关补丁：
bb420cf9aa96 RISCV: KVM: fix bug in migration
8d9fb94def6d RISC-V: Enable KVM for RV64 and RV32
0fb0f6010791 RISC-V: KVM: Add MAINTAINERS entry
94249beff832 RISC-V: KVM: Document RISC-V specific parts of KVM API
7b4c2ba99524 RISC-V: KVM: Add SBI v0.1 support
1740d169ec24 RISC-V: KVM: Implement ONE REG interface for FP registers
d58a09d981c6 RISC-V: KVM: FP lazy save/restore
5d694703a4df RISC-V: KVM: Add timer functionality
3bba8056692e RISC-V: KVM: Implement MMU notifiers
4c99be36676d RISC-V: KVM: Implement stage2 page table programming
f2c078138b96 RISC-V: KVM: Implement VMID allocator
ac864e222df9 RISC-V: KVM: Handle WFI exits for VCPU
76580c26bfaf RISC-V: KVM: Handle MMIO exits for VCPU
a8c4fcfe6cca RISC-V: KVM: Implement VCPU world-switch
5fbaad69b54f RISC-V: KVM: Implement KVM_GET_ONE_REG/KVM_SET_ONE_REG ioctls
712a392a1ee1 RISC-V: KVM: Implement VCPU interrupts and requests handling
547754bf9ebe RISC-V: KVM: Implement VCPU create, init and destroy functions
e91613aec0b9 RISC-V: Add initial skeletal KVM support
145b00007b88 RISC-V: Add hypervisor extension related CSR defines
ddc1d948927c RISC-V: Enable drivers for Microchip PolarFire ICICLE board
41e926e6ead2 RISC-V: Initial DTS for Microchip ICICLE board
ee81ec41a2d0 RISC-V: Add Microchip PolarFire kconfig option
b87003a9d82f Microchip Polarfire SoC Clock Driver
ff85bc34763a RISC-V: Enable CPU Hotplug in defconfigs
3693aa3de291 Revert "riscv: Use latest system call ABI"
688923d14395 RISC-V: Add fragmented config for debug options

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