From: Wencheng Yang <east.moutain.yang@gmail.com>
To: east.moutain.yang@gmail.com, alex.williamson@redhat.com, jgg@ziepe.ca
Cc: iommu@lists.linux.dev, joro@8bytes.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, robin.murphy@arm.com,
suravee.suthikulpanit@amd.com, will@kernel.org
Subject: [PATCH v3 1/3] uapi/linux/vfio:Add VFIO_DMA_MAP_FLAG_MMIO flag
Date: Tue, 21 Jan 2025 19:28:34 +0800 [thread overview]
Message-ID: <20250121112836.525046-1-east.moutain.yang@gmail.com> (raw)
In-Reply-To: <CALrP2iW11zHNVWCz3JXjPHxyJ=j3FsVdTGetMoxQvmNZo2X_yQ@mail.gmail.com>
The flag will be used by VFIO to map DMA for device MMIO on IOMMU page table.
Signed-off-by: Wencheng Yang <east.moutain.yang@gmail.com>
---
include/uapi/linux/vfio.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index c8dbf8219c4f..68002c8f1157 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -1560,6 +1560,7 @@ struct vfio_iommu_type1_dma_map {
#define VFIO_DMA_MAP_FLAG_READ (1 << 0) /* readable from device */
#define VFIO_DMA_MAP_FLAG_WRITE (1 << 1) /* writable from device */
#define VFIO_DMA_MAP_FLAG_VADDR (1 << 2)
+#define VFIO_DMA_MAP_FLAG_MMIO (1 << 3) /* map of mmio */
__u64 vaddr; /* Process virtual address */
__u64 iova; /* IO virtual address */
__u64 size; /* Size of mapping (bytes) */
--
2.43.0
next prev parent reply other threads:[~2025-01-21 11:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-17 7:14 [PATCH v2] drviers/iommu/amd: support P2P access through IOMMU when SME is enabled Wencheng Yang
2025-01-17 13:44 ` Alex Williamson
2025-01-21 11:07 ` Wencheng Yang
2025-01-21 11:28 ` Wencheng Yang [this message]
2025-01-21 11:28 ` [PATCH v3 2/3] vfio/vfio_iommu_type1:convert VFIO_DMA_MAP_FLAG_MMIO to IOMMU_MMIO flag Wencheng Yang
2025-01-21 11:28 ` [PATCH v3 3/3] iommu/amd:Clear encryption bit if the mapping is for device MMIO Wencheng Yang
2025-01-21 14:05 ` [PATCH v3 1/3] uapi/linux/vfio:Add VFIO_DMA_MAP_FLAG_MMIO flag Jason Gunthorpe
2025-01-21 15:34 ` [PATCH v2] drviers/iommu/amd: support P2P access through IOMMU when SME is enabled Alex Williamson
2025-01-21 20:47 ` Jason Gunthorpe
2025-01-20 13:59 ` Jason Gunthorpe
2025-01-21 9:27 ` Wencheng Yang
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