Re: [Xen-devel] [PATCH 1/2] xen: devicetree: Introduce a helper to translate PCI requester ID

Hi Stefano, > -Original Message- > From: Stefano Stabellini [mailto:sstabell...@kernel.org] > Sent: 2017年7月7日 4:26 > To: Wei Chen > Cc: xen-devel@lists.xen.org; sstabell...@kernel.org; Julien Grall > ; Steve Capper ; Kaly Xin

Re: [Xen-devel] [PATCH 1/2] xen: devicetree: Introduce a helper to translate PCI requester ID

On Fri, 30 Jun 2017, Wei Chen wrote: > Each PCI(e) device under a root complex is uniquely identified by its > Requester ID (AKA RID). A Requester ID is a triplet of a Bus number, > Device number, and Function number. IOMMUs may distinguish PCI devices > through sideband data derived from the

[Xen-devel] [PATCH 1/2] xen: devicetree: Introduce a helper to translate PCI requester ID

Each PCI(e) device under a root complex is uniquely identified by its Requester ID (AKA RID). A Requester ID is a triplet of a Bus number, Device number, and Function number. IOMMUs may distinguish PCI devices through sideband data derived from the Requester ID. While a given PCI device can only