Re: [Xen-devel] [PATCH] fix MSI injection on Xen

2016-01-05 Thread Stefano Stabellini
On Fri, 18 Dec 2015, Stefano Stabellini wrote: > On Wed, 2 Dec 2015, Michael S. Tsirkin wrote: > > On Wed, Dec 02, 2015 at 05:16:18PM +, Stefano Stabellini wrote: > > > On Wed, 2 Dec 2015, Michael S. Tsirkin wrote: > > > > On Wed, Dec 02, 2015 at 04:56:21PM +, Stefano Stabellini wrote: > >

Re: [Xen-devel] [PATCH] fix MSI injection on Xen

2015-12-18 Thread Stefano Stabellini
On Wed, 2 Dec 2015, Michael S. Tsirkin wrote: > On Wed, Dec 02, 2015 at 05:16:18PM +, Stefano Stabellini wrote: > > On Wed, 2 Dec 2015, Michael S. Tsirkin wrote: > > > On Wed, Dec 02, 2015 at 04:56:21PM +, Stefano Stabellini wrote: > > > > On Xen MSIs can be remapped into pirqs, which are a

Re: [Xen-devel] [PATCH] fix MSI injection on Xen

2015-12-02 Thread Michael S. Tsirkin
On Wed, Dec 02, 2015 at 05:16:18PM +, Stefano Stabellini wrote: > On Wed, 2 Dec 2015, Michael S. Tsirkin wrote: > > On Wed, Dec 02, 2015 at 04:56:21PM +, Stefano Stabellini wrote: > > > On Xen MSIs can be remapped into pirqs, which are a type of event > > > channels. It's mostly for the ben

Re: [Xen-devel] [PATCH] fix MSI injection on Xen

2015-12-02 Thread Stefano Stabellini
On Wed, 2 Dec 2015, Michael S. Tsirkin wrote: > On Wed, Dec 02, 2015 at 04:56:21PM +, Stefano Stabellini wrote: > > On Xen MSIs can be remapped into pirqs, which are a type of event > > channels. It's mostly for the benefit of PCI passthrough devices, to > > avoid the overhead of interacting wi

Re: [Xen-devel] [PATCH] fix MSI injection on Xen

2015-12-02 Thread Michael S. Tsirkin
On Wed, Dec 02, 2015 at 04:56:21PM +, Stefano Stabellini wrote: > On Xen MSIs can be remapped into pirqs, which are a type of event > channels. It's mostly for the benefit of PCI passthrough devices, to > avoid the overhead of interacting with the emulated lapic. > > However remapping interrup