From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCHv7 5/8] kvm: eoi msi documentation Date: Mon, 18 Jun 2012 18:00:55 +0300 Message-ID: <20120618150055.GG26540@redhat.com> References: <4FDF3911.7020902@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: x86@kernel.org, kvm@vger.kernel.org, Ingo Molnar , "H. Peter Anvin" , Marcelo Tosatti , gleb@redhat.com, Linus Torvalds , linux-kernel@vger.kernel.org, Thomas Gleixner To: Avi Kivity Return-path: Content-Disposition: inline In-Reply-To: <4FDF3911.7020902@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Mon, Jun 18, 2012 at 05:20:01PM +0300, Avi Kivity wrote: > On 06/14/2012 04:53 PM, Michael S. Tsirkin wrote: > > Document the new EOI MSR. Couldn't decide whether this change belongs > > conceptually on guest or host side, so a separate patch. > > > > Signed-off-by: Michael S. Tsirkin > > --- > > Documentation/virtual/kvm/msr.txt | 32 ++++++++++++++++++++++++++++++++ > > 1 file changed, 32 insertions(+) > > > > diff --git a/Documentation/virtual/kvm/msr.txt b/Documentation/virtual/kvm/msr.txt > > index 96b41bd..6ae5a85 100644 > > --- a/Documentation/virtual/kvm/msr.txt > > +++ b/Documentation/virtual/kvm/msr.txt > > @@ -223,3 +223,35 @@ MSR_KVM_STEAL_TIME: 0x4b564d03 > > steal: the amount of time in which this vCPU did not run, in > > nanoseconds. Time during which the vcpu is idle, will not be > > reported as steal time. > > + > > +MSR_KVM_EOI_EN: 0x4b564d04 > > + data: Bit 0 is 1 when PV end of interrupt is enabled on the vcpu; 0 > > + when disabled. When enabled, bits 63-1 hold 2-byte aligned physical address > > + of a 2 byte memory area which must be in guest RAM and must be zeroed. > > 2 byte aligned means we must never access it on the host with a >2 byte > instruction, or we risk touching unmapped memory. Wait, maybe you mean the text above should go into documentation? > -- > error compiling committee.c: too many arguments to function >