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From b50c47e1a9fbe8876e231afbb5ed85945c8038da Mon Sep 17 00:00:00 2001
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From: Cornelia Huck <cohuck@redhat.com>
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Date: Tue, 19 Jan 2021 12:50:40 -0500
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Subject: [PATCH 1/7] linux-headers: add vfio DMA available capability
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RH-Author: Cornelia Huck <cohuck@redhat.com>
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Message-id: <20210119125046.472811-2-cohuck@redhat.com>
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Patchwork-id: 100674
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O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/7] linux-headers: add vfio DMA available capability
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Bugzilla: 1905391
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Auger Eric <eric.auger@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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UPSTREAM: RHEL only
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This is the part of 53ba2eee52bf ("linux-headers: update against
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5.10-rc1") required for DMA limiting.
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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linux-headers/linux/vfio.h | 15 +++++++++++++++
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1 file changed, 15 insertions(+)
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diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
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index 9e227348b30..f660bd7bace 100644
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--- a/linux-headers/linux/vfio.h
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+++ b/linux-headers/linux/vfio.h
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@@ -751,6 +751,21 @@ struct vfio_iommu_type1_info_cap_iova_range {
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struct vfio_iova_range iova_ranges[];
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};
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+/*
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+ * The DMA available capability allows to report the current number of
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+ * simultaneously outstanding DMA mappings that are allowed.
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+ *
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+ * The structure below defines version 1 of this capability.
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+ *
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+ * avail: specifies the current number of outstanding DMA mappings allowed.
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+ */
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+#define VFIO_IOMMU_TYPE1_INFO_DMA_AVAIL 3
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+
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+struct vfio_iommu_type1_info_dma_avail {
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+ struct vfio_info_cap_header header;
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+ __u32 avail;
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+};
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+
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#define VFIO_IOMMU_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
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/**
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--
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2.27.0
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