Para-virt feature steal time is added in both kvm and guest kernel side. It is silimar with other architectures, steal time structure comes from guest memory, also pseduo register is used to save/restore base address of steal time structure, so that vm migration is supported also.
--- v2: 1. Add PARAVIRT_TIME_ACCOUNTING kconfig option in file arch/loongarch/Kconfig 2. Function name change such as replace pv_register_steal_time with pv_enable_steal_time etc --- Bibo Mao (2): LoongArch: KVM: Add steal time support in kvm side LoongArch: Add steal time support in guest side arch/loongarch/Kconfig | 11 +++ arch/loongarch/include/asm/kvm_host.h | 7 ++ arch/loongarch/include/asm/kvm_para.h | 10 ++ arch/loongarch/include/asm/loongarch.h | 1 + arch/loongarch/include/asm/paravirt.h | 5 + arch/loongarch/include/uapi/asm/kvm.h | 4 + arch/loongarch/kernel/paravirt.c | 131 +++++++++++++++++++++++++ arch/loongarch/kernel/time.c | 2 + arch/loongarch/kvm/exit.c | 29 +++++- arch/loongarch/kvm/vcpu.c | 120 ++++++++++++++++++++++ 10 files changed, 318 insertions(+), 2 deletions(-) base-commit: 2c8159388952f530bd260e097293ccc0209240be -- 2.39.3
