Re: [Xen-devel] [PATCH V2 14/25] x86/vvtd: Process interrupt remapping request

2017-08-23 Thread Jan Beulich
>>> On 23.08.17 at 11:49, wrote: > On Wed, Aug 09, 2017 at 04:34:15PM -0400, Lan Tianyu wrote: >> @@ -384,6 +399,12 @@ struct iremap_entry { >> }; >> >> /* >> + * When VT-d doesn't enable Extended Interrupt Mode. Hardware only >> interprets >> + * only 8-bits ([15:8]) of Destination-ID field

Re: [Xen-devel] [PATCH V2 14/25] x86/vvtd: Process interrupt remapping request

2017-08-23 Thread Roger Pau Monné
On Wed, Aug 09, 2017 at 04:34:15PM -0400, Lan Tianyu wrote: > From: Chao Gao > > When a remapping interrupt request arrives, remapping hardware computes the > interrupt_index per the algorithm described in VTD spec > "Interrupt Remapping Table", interprets the IRTE and generates a remapped > inte