From 3a1e5e4a2c7a1ec63e6d70a7e921f62bcbb57b85 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= Date: Mon, 29 Apr 2019 15:25:35 +0200 Subject: [PATCH] Revert "KVM: doc: Document the life cycle of a VM and its resources" MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This reverts commit 919f6cd8bb2fe7151f8aecebc3b3d1ca2567396e. The patch was applied twice. The first commit is eca6be566d47029f945a5f8e1c94d374e31df2ca. Reported-by: Cornelia Huck Signed-off-by: Radim Krčmář Signed-off-by: Paolo Bonzini --- Documentation/virtual/kvm/api.txt | 17 ----------------- 1 file changed, 17 deletions(-) diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index b62ad0d94234..26dc1280b49b 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -69,23 +69,6 @@ by and on behalf of the VM's process may not be freed/unaccounted when the VM is shut down. -It is important to note that althought VM ioctls may only be issued from -the process that created the VM, a VM's lifecycle is associated with its -file descriptor, not its creator (process). In other words, the VM and -its resources, *including the associated address space*, are not freed -until the last reference to the VM's file descriptor has been released. -For example, if fork() is issued after ioctl(KVM_CREATE_VM), the VM will -not be freed until both the parent (original) process and its child have -put their references to the VM's file descriptor. - -Because a VM's resources are not freed until the last reference to its -file descriptor is released, creating additional references to a VM via -via fork(), dup(), etc... without careful consideration is strongly -discouraged and may have unwanted side effects, e.g. memory allocated -by and on behalf of the VM's process may not be freed/unaccounted when -the VM is shut down. - - 3. Extensions ------------- -- 2.30.2