linux-kernel - RE: [RFC PATCH v3 1/4] vfio: Define device specific irq type capability

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Message-ID: <237F54289DF84E4997F34151298ABEBC87683644@SHSMSX101.ccr.corp.intel.com>
Date:   Thu, 27 Jun 2019 08:55:21 +0000
From:   "Zhang, Tina" <tina.zhang@...el.com>
To:     Gerd Hoffmann <kraxel@...hat.com>
CC:     "Tian, Kevin" <kevin.tian@...el.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "zhenyuw@...ux.intel.com" <zhenyuw@...ux.intel.com>,
        "Yuan, Hang" <hang.yuan@...el.com>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "Lv, Zhiyuan" <zhiyuan.lv@...el.com>,
        "intel-gvt-dev@...ts.freedesktop.org" 
        <intel-gvt-dev@...ts.freedesktop.org>,
        "Wang, Zhi A" <zhi.a.wang@...el.com>
Subject: RE: [RFC PATCH v3 1/4] vfio: Define device specific irq type
 capability


> -----Original Message-----
> From: intel-gvt-dev [mailto:intel-gvt-dev-bounces@...ts.freedesktop.org] On
> Behalf Of Gerd Hoffmann
> Sent: Thursday, June 27, 2019 2:20 PM
> To: Zhang, Tina <tina.zhang@...el.com>
> Cc: Tian, Kevin <kevin.tian@...el.com>; kvm@...r.kernel.org; linux-
> kernel@...r.kernel.org; zhenyuw@...ux.intel.com; Yuan, Hang
> <hang.yuan@...el.com>; alex.williamson@...hat.com; Lv, Zhiyuan
> <zhiyuan.lv@...el.com>; intel-gvt-dev@...ts.freedesktop.org; Wang, Zhi A
> <zhi.a.wang@...el.com>
> Subject: Re: [RFC PATCH v3 1/4] vfio: Define device specific irq type
> capability
> 
>   Hi,
> 
> > +struct vfio_irq_info_cap_type {
> > +	struct vfio_info_cap_header header;
> > +	__u32 type;     /* global per bus driver */
> > +	__u32 subtype;  /* type specific */
> 
> Do we really need both type and subtype?
Then, if one device has several irqs, how can we identify them?
Thanks.

BR,
tina
> 
> cheers,
>   Gerd
> 
> _______________________________________________
> intel-gvt-dev mailing list
> intel-gvt-dev@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gvt-dev

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