From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59D88C43219 for ; Mon, 29 Apr 2019 13:25:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2EFED2084B for ; Mon, 29 Apr 2019 13:25:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728246AbfD2NZr (ORCPT ); Mon, 29 Apr 2019 09:25:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38018 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725838AbfD2NZr (ORCPT ); Mon, 29 Apr 2019 09:25:47 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 22A108667B; Mon, 29 Apr 2019 13:25:47 +0000 (UTC) Received: from flask (unknown [10.40.205.238]) by smtp.corp.redhat.com (Postfix) with SMTP id 0F5A34387; Mon, 29 Apr 2019 13:25:44 +0000 (UTC) Received: by flask (sSMTP sendmail emulation); Mon, 29 Apr 2019 15:25:44 +0200 From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Paolo Bonzini , Cornelia Huck Subject: [PATCH] Revert "KVM: doc: Document the life cycle of a VM and its resources" Date: Mon, 29 Apr 2019 15:25:35 +0200 Message-Id: <20190429132535.8302-1-rkrcmar@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Mon, 29 Apr 2019 13:25:47 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This reverts commit 919f6cd8bb2fe7151f8aecebc3b3d1ca2567396e. The patch was applied twice. The first commit is eca6be566d47029f945a5f8e1c94d374e31df2ca. Reported-by: Cornelia Huck Signed-off-by: Radim Krčmář --- 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