From: "Radim Krčmář" <rkrcmar@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>, Cornelia Huck <cohuck@redhat.com>
Subject: [PATCH] Revert "KVM: doc: Document the life cycle of a VM and its resources"
Date: Mon, 29 Apr 2019 15:25:35 +0200 [thread overview]
Message-ID: <20190429132535.8302-1-rkrcmar@redhat.com> (raw)
This reverts commit 919f6cd8bb2fe7151f8aecebc3b3d1ca2567396e.
The patch was applied twice.
The first commit is eca6be566d47029f945a5f8e1c94d374e31df2ca.
Reported-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
---
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
-------------
--
2.20.1
next reply other threads:[~2019-04-29 13:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-29 13:25 Radim Krčmář [this message]
2019-04-29 13:31 ` Cornelia Huck
2019-04-30 19:31 ` Paolo Bonzini
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