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.
Bibo Mao (2): LoongArch: KVM: Add steal time support in kvm side LoongArch: Add steal time support in guest side 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 | 130 +++++++++++++++++++++++++ arch/loongarch/kernel/time.c | 2 + arch/loongarch/kvm/exit.c | 35 ++++++- arch/loongarch/kvm/vcpu.c | 120 +++++++++++++++++++++++ 9 files changed, 309 insertions(+), 5 deletions(-) base-commit: 2ac2b1665d3fbec6ca709dd6ef3ea05f4a51ee4c -- 2.39.3
