linux-kernel - [PATCH v2 06/24] virtio_blk: correct tags for config space fields

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Date:   Mon, 3 Aug 2020 16:58:59 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     virtualization@...ts.linux-foundation.org,
        Jason Wang <jasowang@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>
Subject: [PATCH v2 06/24] virtio_blk: correct tags for config space fields

Tag config space fields as having virtio endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 include/uapi/linux/virtio_blk.h | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index 0f99d7b49ede..d888f013d9ff 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -57,20 +57,20 @@
 
 struct virtio_blk_config {
 	/* The capacity (in 512-byte sectors). */
-	__u64 capacity;
+	__virtio64 capacity;
 	/* The maximum segment size (if VIRTIO_BLK_F_SIZE_MAX) */
-	__u32 size_max;
+	__virtio32 size_max;
 	/* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */
-	__u32 seg_max;
+	__virtio32 seg_max;
 	/* geometry of the device (if VIRTIO_BLK_F_GEOMETRY) */
 	struct virtio_blk_geometry {
-		__u16 cylinders;
+		__virtio16 cylinders;
 		__u8 heads;
 		__u8 sectors;
 	} geometry;
 
 	/* block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
-	__u32 blk_size;
+	__virtio32 blk_size;
 
 	/* the next 4 entries are guarded by VIRTIO_BLK_F_TOPOLOGY  */
 	/* exponent for physical block per logical block. */
@@ -78,42 +78,42 @@ struct virtio_blk_config {
 	/* alignment offset in logical blocks. */
 	__u8 alignment_offset;
 	/* minimum I/O size without performance penalty in logical blocks. */
-	__u16 min_io_size;
+	__virtio16 min_io_size;
 	/* optimal sustained I/O size in logical blocks. */
-	__u32 opt_io_size;
+	__virtio32 opt_io_size;
 
 	/* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */
 	__u8 wce;
 	__u8 unused;
 
 	/* number of vqs, only available when VIRTIO_BLK_F_MQ is set */
-	__u16 num_queues;
+	__virtio16 num_queues;
 
 	/* the next 3 entries are guarded by VIRTIO_BLK_F_DISCARD */
 	/*
 	 * The maximum discard sectors (in 512-byte sectors) for
 	 * one segment.
 	 */
-	__u32 max_discard_sectors;
+	__virtio32 max_discard_sectors;
 	/*
 	 * The maximum number of discard segments in a
 	 * discard command.
 	 */
-	__u32 max_discard_seg;
+	__virtio32 max_discard_seg;
 	/* Discard commands must be aligned to this number of sectors. */
-	__u32 discard_sector_alignment;
+	__virtio32 discard_sector_alignment;
 
 	/* the next 3 entries are guarded by VIRTIO_BLK_F_WRITE_ZEROES */
 	/*
 	 * The maximum number of write zeroes sectors (in 512-byte sectors) in
 	 * one segment.
 	 */
-	__u32 max_write_zeroes_sectors;
+	__virtio32 max_write_zeroes_sectors;
 	/*
 	 * The maximum number of segments in a write zeroes
 	 * command.
 	 */
-	__u32 max_write_zeroes_seg;
+	__virtio32 max_write_zeroes_seg;
 	/*
 	 * Set if a VIRTIO_BLK_T_WRITE_ZEROES request may result in the
 	 * deallocation of one or more of the sectors.
-- 
MST