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linux-headers: update against 5.10 and manual clear vfio dirty log series

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The new capability VFIO_DIRTY_LOG_MANUAL_CLEAR and the new ioctl
VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP_NOCLEAR and
VFIO_IOMMU_DIRTY_PAGES_FLAG_CLEAR_BITMAP have been introduced in
the kernel, update the header to add them.

Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
Signed-off-by: imxcc <xingchaochao@huawei.com>
(cherry picked from commit 7518c53b639053d5535b3c4e3aeb4a21950f9042)
This commit is contained in:
Chen Qun 2021-05-08 17:31:03 +08:00 committed by yezengruan
parent 238e2831d9
commit 7c34d162fc
1 changed files with 82 additions and 0 deletions
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linux-headers-update-against-5.10-and-manual-clear-v.patch Normal file
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@ -0,0 +1,82 @@
From 40512773625a4f8ddd96a5af924f119b89a14706 Mon Sep 17 00:00:00 2001
From: Zenghui Yu <yuzenghui@huawei.com>
Date: Sat, 8 May 2021 17:31:03 +0800
Subject: [PATCH] linux-headers: update against 5.10 and manual clear vfio
dirty log series
The new capability VFIO_DIRTY_LOG_MANUAL_CLEAR and the new ioctl
VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP_NOCLEAR and
VFIO_IOMMU_DIRTY_PAGES_FLAG_CLEAR_BITMAP have been introduced in
the kernel, update the header to add them.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
---
linux-headers/linux/vfio.h | 36 +++++++++++++++++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index e680594f27..f4ff038e8c 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -52,6 +52,16 @@
/* Supports the vaddr flag for DMA map and unmap */
#define VFIO_UPDATE_VADDR 10
+/*
+ * The vfio_iommu driver may support user clears dirty log manually, which means
+ * dirty log can be requested to not cleared automatically after dirty log is
+ * copied to userspace, it's user's duty to clear dirty log.
+ *
+ * Note: please refer to VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP_NOCLEAR and
+ * VFIO_IOMMU_DIRTY_PAGES_FLAG_CLEAR_BITMAP.
+ */
+#define VFIO_DIRTY_LOG_MANUAL_CLEAR 11
+
/*
* The IOCTL interface is designed for extensibility by embedding the
* structure length (argsz) and flags into structures passed between
@@ -1196,8 +1206,30 @@ struct vfio_iommu_type1_dma_unmap {
* actual bitmap. If dirty pages logging is not enabled, an error will be
* returned.
*
- * Only one of the flags _START, _STOP and _GET may be specified at a time.
+ * The VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP_NOCLEAR flag is almost same as
+ * VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP, except that it requires underlying
+ * dirty bitmap is not cleared automatically. The user can clear it manually by
+ * calling the IOCTL with VFIO_IOMMU_DIRTY_PAGES_FLAG_CLEAR_BITMAP flag set.
*
+ * Calling the IOCTL with VFIO_IOMMU_DIRTY_PAGES_FLAG_CLEAR_BITMAP flag set,
+ * instructs the IOMMU driver to clear the dirty status of pages in a bitmap
+ * for IOMMU container for a given IOVA range. The user must specify the IOVA
+ * range, the bitmap and the pgsize through the structure
+ * vfio_iommu_type1_dirty_bitmap_get in the data[] portion. This interface
+ * supports clearing a bitmap of the smallest supported pgsize only and can be
+ * modified in future to clear a bitmap of any specified supported pgsize. The
+ * user must provide a memory area for the bitmap memory and specify its size
+ * in bitmap.size. One bit is used to represent one page consecutively starting
+ * from iova offset. The user should provide page size in bitmap.pgsize field.
+ * A bit set in the bitmap indicates that the page at that offset from iova is
+ * cleared the dirty status, and dirty tracking is re-enabled for that page. The
+ * caller must set argsz to a value including the size of structure
+ * vfio_iommu_dirty_bitmap_get, but excluing the size of the actual bitmap. If
+ * dirty pages logging is not enabled, an error will be returned. Note: user
+ * should clear dirty log before handle corresponding dirty pages.
+ *
+ * Only one of the flags _START, _STOP, _GET, _GET_NOCLEAR_, and _CLEAR may be
+ * specified at a time.
*/
struct vfio_iommu_type1_dirty_bitmap {
__u32 argsz;
@@ -1205,6 +1237,8 @@ struct vfio_iommu_type1_dirty_bitmap {
#define VFIO_IOMMU_DIRTY_PAGES_FLAG_START (1 << 0)
#define VFIO_IOMMU_DIRTY_PAGES_FLAG_STOP (1 << 1)
#define VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP (1 << 2)
+#define VFIO_IOMMU_DIRTY_PAGES_FLAG_GET_BITMAP_NOCLEAR (1 << 3)
+#define VFIO_IOMMU_DIRTY_PAGES_FLAG_CLEAR_BITMAP (1 << 4)
__u8 data[];
};
--
2.27.0