forked from luck/tmp_suning_uos_patched
Revert "KVM: doc: Document the life cycle of a VM and its resources"
This reverts commit919f6cd8bb
. The patch was applied twice. The first commit iseca6be566d
. Reported-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -69,23 +69,6 @@ by and on behalf of the VM's process may not be freed/unaccounted when
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the VM is shut down.
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It is important to note that althought VM ioctls may only be issued from
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the process that created the VM, a VM's lifecycle is associated with its
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file descriptor, not its creator (process). In other words, the VM and
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its resources, *including the associated address space*, are not freed
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until the last reference to the VM's file descriptor has been released.
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For example, if fork() is issued after ioctl(KVM_CREATE_VM), the VM will
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not be freed until both the parent (original) process and its child have
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put their references to the VM's file descriptor.
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Because a VM's resources are not freed until the last reference to its
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file descriptor is released, creating additional references to a VM via
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via fork(), dup(), etc... without careful consideration is strongly
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discouraged and may have unwanted side effects, e.g. memory allocated
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by and on behalf of the VM's process may not be freed/unaccounted when
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the VM is shut down.
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3. Extensions
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-------------
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