| KVM Lock Overview | |
| ================= | |
| 1. Acquisition Orders | |
| --------------------- | |
| (to be written) | |
| 2. Reference | |
| ------------ | |
| Name: kvm_lock | |
| Type: raw_spinlock | |
| Arch: any | |
| Protects: - vm_list | |
| - hardware virtualization enable/disable | |
| Comment: 'raw' because hardware enabling/disabling must be atomic /wrt | |
| migration. | |
| Name: kvm_arch::tsc_write_lock | |
| Type: raw_spinlock | |
| Arch: x86 | |
| Protects: - kvm_arch::{last_tsc_write,last_tsc_nsec,last_tsc_offset} | |
| - tsc offset in vmcb | |
| Comment: 'raw' because updating the tsc offsets must not be preempted. |