From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: passing through SMBus Date: Thu, 14 Nov 2013 21:59:58 +0000 Message-ID: <528547DE.3050704@citrix.com> References: <5284AC2D.6060304@citrix.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8914508865068980526==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Shailesh Kumar , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org --===============8914508865068980526== Content-Type: multipart/alternative; boundary="------------050101090901030509040201" --------------050101090901030509040201 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit On 14/11/2013 19:30, Shailesh Kumar wrote: > I am looking for passingthrough the SMBus to the guest. > > Please do not drop xen-devel from the CC line, and please do not top-post. Passing though the host SMBus to a VM is almost certainly going to cause issues. dom0 will likely be using bits and pieces on the SMBus itself. How are you trying to connect to your windows VM ? ~Andrew > On Thu, Nov 14, 2013 at 2:55 AM, Andrew Cooper > > wrote: > > On 14/11/13 03:03, Shailesh Kumar wrote: >> Hi All, >> >> I have a windows 7 as my domU and some windows based drivers are >> not fully functional (like: touchpad-driver etc ) because they >> are SMBus based. I was looking at a way to passthrough the SMBus >> at 00:1f.03 on south bridge ( 00:1f.0), I was debugging at >> pt-graphics.c and understand that it is detecting the south >> bridge and passing it through but the other functions for the >> same dev-id are not getting passed through. Seeking help if >> someone can help me to get the function '3' also pass through. >> >> I am using Xen-4.2.0 and dom-0 linux kernel is 3.9.4. My dom-0 is >> Fedora-17-64bit based. >> >> thanks >> tsk > > Do you mean that you are looking to pass through the host SMBus to > a guest, or that you are looking for qemu to emulate an SMBus? > > ~Andrew > > --------------050101090901030509040201 Content-Type: text/html; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit
On 14/11/2013 19:30, Shailesh Kumar wrote:
I am looking for passingthrough the SMBus to the guest.



Please do not drop xen-devel from the CC line, and please do not top-post.

Passing though the host SMBus to a VM is almost certainly going to cause issues.  dom0 will likely be using bits and pieces on the SMBus itself.

How are you trying to connect to your windows VM ?

~Andrew

On Thu, Nov 14, 2013 at 2:55 AM, Andrew Cooper <andrew.cooper3@citrix.com> wrote:
On 14/11/13 03:03, Shailesh Kumar wrote:
Hi All, 

I have a windows 7 as my domU and some windows based drivers are not fully functional (like: touchpad-driver etc ) because they are SMBus based. I was looking at a way to passthrough the SMBus at 00:1f.03 on south bridge ( 00:1f.0), I was debugging at pt-graphics.c and understand that it is detecting the south bridge and passing it through but the other functions for the same dev-id are not getting passed through. Seeking help if someone can help me to get the function '3' also pass through.

I am using Xen-4.2.0 and dom-0 linux kernel is 3.9.4. My dom-0 is Fedora-17-64bit based.

thanks 
tsk

Do you mean that you are looking to pass through the host SMBus to a guest, or that you are looking for qemu to emulate an SMBus?

~Andrew



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