regs

struct kvm_sregs2 是相对于 kvm_sregs 而言的，只是一个新的

/* for KVM_GET_REGS and KVM_SET_REGS */
struct kvm_regs {
	/* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
	__u64 rax, rbx, rcx, rdx;
	__u64 rsi, rdi, rsp, rbp;
	__u64 r8,  r9,  r10, r11;
	__u64 r12, r13, r14, r15;
	__u64 rip, rflags;
};


struct kvm_sregs2 {
	/* out (KVM_GET_SREGS2) / in (KVM_SET_SREGS2) */
	struct kvm_segment cs, ds, es, fs, gs, ss;
	struct kvm_segment tr, ldt;
	struct kvm_dtable gdt, idt;
	__u64 cr0, cr2, cr3, cr4, cr8;
	__u64 efer;
	__u64 apic_base;
	__u64 flags;
	__u64 pdptrs[4];
};

    ret = has_sregs2 ? kvm_put_sregs2(x86_cpu) : kvm_put_sregs(x86_cpu);

• __clone3
  • start_thread
    • qemu_thread_start
      • kvm_vcpu_thread_fn
        • qemu_wait_io_event
          • process_queued_cpu_work
            • do_kvm_cpu_synchronize_state
              • do_kvm_cpu_synchronize_state
                • kvm_arch_get_registers
                  • kvm_get_sregs2

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