From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Hildenbrand Subject: [PATCH v2 13/15] KVM: x86: document special identity map address value Date: Thu, 24 Aug 2017 20:51:35 +0200 Message-ID: <20170824185137.6253-14-david@redhat.com> References: <20170824185137.6253-1-david@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , david@redhat.com To: kvm@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:55684 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753883AbdHXSwG (ORCPT ); Thu, 24 Aug 2017 14:52:06 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AB076769E2 for ; Thu, 24 Aug 2017 18:52:06 +0000 (UTC) In-Reply-To: <20170824185137.6253-1-david@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Setting it to 0 leads to setting it to the default value, let's document this. Reviewed-by: Radim Krčmář Signed-off-by: David Hildenbrand --- Documentation/virtual/kvm/api.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index e63a35fafef0..22bc5a052a5d 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -1124,6 +1124,9 @@ guest physical address space and must not conflict with any memory slot or any mmio address. The guest may malfunction if it accesses this memory region. +Setting the address to 0 will result in resetting the address to its default +(0xfffbc000). + This ioctl is required on Intel-based hosts. This is needed on Intel hardware because of a quirk in the virtualization implementation (see the internals documentation when it pops into existence). -- 2.13.5