linux-kernel - [PATCH v11 09/13] vfio: Add new IRQ for DMA fault reporting

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Message-Id: <20201116110030.32335-10-eric.auger@redhat.com>
Date:   Mon, 16 Nov 2020 12:00:26 +0100
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, will@...nel.org,
        joro@...tes.org, maz@...nel.org, robin.murphy@....com,
        alex.williamson@...hat.com
Cc:     jean-philippe@...aro.org, zhangfei.gao@...aro.org,
        zhangfei.gao@...il.com, vivek.gautam@....com,
        shameerali.kolothum.thodi@...wei.com,
        jacob.jun.pan@...ux.intel.com, yi.l.liu@...el.com, tn@...ihalf.com,
        nicoleotsuka@...il.com, yuzenghui@...wei.com
Subject: [PATCH v11 09/13] 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 0e2bfbeccd08..1e5c82f9d14d 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -722,6 +722,9 @@ 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)
  *
-- 
2.21.3