linux-kernel - [PATCH v9 08/11] vfio: Add new IRQ for DMA fault reporting

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Message-Id: <20190711135625.20684-9-eric.auger@redhat.com>
Date:   Thu, 11 Jul 2019 15:56:22 +0200
From:   Eric Auger <eric.auger@...hat.com>
To:     eric.auger.pro@...il.com, eric.auger@...hat.com,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, kvmarm@...ts.cs.columbia.edu, joro@...tes.org,
        alex.williamson@...hat.com, jacob.jun.pan@...ux.intel.com,
        yi.l.liu@...el.com, jean-philippe.brucker@....com,
        will.deacon@....com, robin.murphy@....com
Cc:     kevin.tian@...el.com, ashok.raj@...el.com, marc.zyngier@....com,
        peter.maydell@...aro.org, vincent.stehle@....com,
        zhangfei.gao@...il.com, tina.zhang@...el.com
Subject: [PATCH v9 08/11] vfio: Add new IRQ for DMA fault reporting

Add a new IRQ type/subtype to get notification on nested
stage DMA faults.

Signed-off-by: Eric Auger <eric.auger@...hat.com>
---
 include/uapi/linux/vfio.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index b53714ae02c5..58607809e81a 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -473,6 +473,9 @@ struct vfio_irq_info_cap_type {
 	__u32 subtype;  /* type specific */
 };
 
+#define VFIO_IRQ_TYPE_NESTED				(1)
+#define VFIO_IRQ_SUBTYPE_DMA_FAULT			(1)
+
 /**
  * VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set)
  *
-- 
2.20.1