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cd Documentation mkdir virtual git mv kvm uml lguest virtual Signed-off-by: Rob Landley <rlandley@parallels.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
26 lines
547 B
Plaintext
26 lines
547 B
Plaintext
KVM Lock Overview
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=================
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1. Acquisition Orders
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---------------------
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(to be written)
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2. Reference
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------------
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Name: kvm_lock
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Type: raw_spinlock
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Arch: any
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Protects: - vm_list
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- hardware virtualization enable/disable
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Comment: 'raw' because hardware enabling/disabling must be atomic /wrt
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migration.
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Name: kvm_arch::tsc_write_lock
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Type: raw_spinlock
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Arch: x86
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Protects: - kvm_arch::{last_tsc_write,last_tsc_nsec,last_tsc_offset}
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- tsc offset in vmcb
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Comment: 'raw' because updating the tsc offsets must not be preempted.
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