Linux Virtualization - Aug 2013 - updated: kvm PCI todo wiki

Hey guys,
I've put up a wiki page with a kvm PCI todo list,
mainly to avoid effort duplication, but also in the hope
to draw attention to what I think we should try addressing
in KVM:

http://www.linux-kvm.org/page/PCITodo

This page could cover all PCI related activity in KVM,
it is very incomplete.
We should probably add e.g. IOMMU related stuff.

Note: if there's no developer listed for an item,
this just means I don't know of anyone actively working
on an issue at the moment, not that no one intends to.

I would appreciate it if others working on one of the items on this list
would add their names so we can communicate better.  If others like this
wiki page, please go ahead and add stuff you are working on if any.

It would be especially nice to add testing projects.

Also, feel free to add links to bugzillas items.

Thanks!

-- 
MST

On Wed, 2013-08-21 at 14:45 +0200, Hannes Reinecke
wrote:
> On 08/21/2013 12:48 PM, Michael S. Tsirkin wrote:
> > Hey guys,
> > I've put up a wiki page with a kvm PCI todo list,
> > mainly to avoid effort duplication, but also in the hope
> > to draw attention to what I think we should try addressing
> > in KVM:
> >
> > http://www.linux-kvm.org/page/PCITodo
> >
> > This page could cover all PCI related activity in KVM,
> > it is very incomplete.
> > We should probably add e.g. IOMMU related stuff.
> >
> > Note: if there's no developer listed for an item,
> > this just means I don't know of anyone actively working
> > on an issue at the moment, not that no one intends to.
> >
> > I would appreciate it if others working on one of the items on this
list
> > would add their names so we can communicate better.  If others like
this
> > wiki page, please go ahead and add stuff you are working on if any.
> >
> > It would be especially nice to add testing projects.
> >
> > Also, feel free to add links to bugzillas items.
> >
> On a related note, did anyone ever tried to test MSI / MSI-X with a 
> windows guest? I've tried to enable it for virtio but for some reason
MSI-X is a default mode for NetKvm and viostor on Vista and forward.
It must work. Just make sure that CPU family is 0xf or higher, otherwise
Windows will not activate MSI-X.
Vadim.
 
>  
> Windows didn't wanted to enable it. AHCI was even worse; the stock 
> Windows version doesn't support MSI and the Intel one doesn't like
our
> implementation :-(.
> 
> Anyone ever managed to get this to work?
> 
> If not it'd be a good topic for the wiki ...
> 
> Cheers,
> 
> Hannes

On Wed, Aug 21, 2013 at 02:45:36PM +0200, Hannes Reinecke
wrote:
> On 08/21/2013 12:48 PM, Michael S. Tsirkin wrote:
> >Hey guys,
> >I've put up a wiki page with a kvm PCI todo list,
> >mainly to avoid effort duplication, but also in the hope
> >to draw attention to what I think we should try addressing
> >in KVM:
> >
> >http://www.linux-kvm.org/page/PCITodo
> >
> >This page could cover all PCI related activity in KVM,
> >it is very incomplete.
> >We should probably add e.g. IOMMU related stuff.
> >
> >Note: if there's no developer listed for an item,
> >this just means I don't know of anyone actively working
> >on an issue at the moment, not that no one intends to.
> >
> >I would appreciate it if others working on one of the items on this
list
> >would add their names so we can communicate better.  If others like
this
> >wiki page, please go ahead and add stuff you are working on if any.
> >
> >It would be especially nice to add testing projects.
> >
> >Also, feel free to add links to bugzillas items.
> >
> On a related note, did anyone ever tried to test MSI / MSI-X with a
> windows guest? I've tried to enable it for virtio but for some
> reason Windows didn't wanted to enable it. AHCI was even worse; the
> stock Windows version doesn't support MSI and the Intel one doesn't
> like our implementation :-(.
> Anyone ever managed to get this to work?
> 
> If not it'd be a good topic for the wiki ...
> 
> Cheers,
> 
> Hannes
I put some AHCI - related things there: making intel's
AHCI driver work with QEMU would be nice - e.g.
for windows XP guests. It might also help uncover some bugs.
> -- 
> Dr. Hannes Reinecke		      zSeries & Storage
> hare at suse.de			      +49 911 74053 688
> SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N?rnberg
> GF: J. Hawn, J. Guild, F. Imend?rffer, HRB 16746 (AG N?rnberg)

On 08/21/2013 12:48 PM, Michael S. Tsirkin wrote:
> Hey guys,
> I've put up a wiki page with a kvm PCI todo list,
> mainly to avoid effort duplication, but also in the hope
> to draw attention to what I think we should try addressing
> in KVM:
>
> http://www.linux-kvm.org/page/PCITodo
>
> This page could cover all PCI related activity in KVM,
> it is very incomplete.
> We should probably add e.g. IOMMU related stuff.
>
> Note: if there's no developer listed for an item,
> this just means I don't know of anyone actively working
> on an issue at the moment, not that no one intends to.
>
> I would appreciate it if others working on one of the items on this list
> would add their names so we can communicate better.  If others like this
> wiki page, please go ahead and add stuff you are working on if any.
>
> It would be especially nice to add testing projects.
>
> Also, feel free to add links to bugzillas items.
>
On a related note, did anyone ever tried to test MSI / MSI-X with a 
windows guest? I've tried to enable it for virtio but for some reason 
Windows didn't wanted to enable it. AHCI was even worse; the stock 
Windows version doesn't support MSI and the Intel one doesn't like our 
implementation :-(.

Anyone ever managed to get this to work?

If not it'd be a good topic for the wiki ...

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare at suse.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N?rnberg
GF: J. Hawn, J. Guild, F. Imend?rffer, HRB 16746 (AG N?rnberg)

On Wed, 2013-08-21 at 14:45 +0200, Hannes Reinecke
wrote:
> On 08/21/2013 12:48 PM, Michael S. Tsirkin wrote:
> > Hey guys,
> > I've put up a wiki page with a kvm PCI todo list,
> > mainly to avoid effort duplication, but also in the hope
> > to draw attention to what I think we should try addressing
> > in KVM:
> >
> > http://www.linux-kvm.org/page/PCITodo
> >
> > This page could cover all PCI related activity in KVM,
> > it is very incomplete.
> > We should probably add e.g. IOMMU related stuff.
> >
> > Note: if there's no developer listed for an item,
> > this just means I don't know of anyone actively working
> > on an issue at the moment, not that no one intends to.
> >
> > I would appreciate it if others working on one of the items on this
list
> > would add their names so we can communicate better.  If others like
this
> > wiki page, please go ahead and add stuff you are working on if any.
> >
> > It would be especially nice to add testing projects.
> >
> > Also, feel free to add links to bugzillas items.
> >
> On a related note, did anyone ever tried to test MSI / MSI-X with a 
> windows guest? I've tried to enable it for virtio but for some reason 
> Windows didn't wanted to enable it. AHCI was even worse; the stock 
> Windows version doesn't support MSI and the Intel one doesn't like
our
> implementation :-(.
> 
> Anyone ever managed to get this to work?
> 
> If not it'd be a good topic for the wiki ...
> 
Speaking of which, I asked Asias about this recently and he seems to
think that virtio-net + virtio-blk drivers for MSFT do in fact support
MSI /MSI-X.

MST, do you know if that that true..?

--nab