linux-kernel - [PATCH] virt: acrn: split acrn_mmio_dev_res out of acrn

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Message-ID: <20251028040409.868254-1-rdunlap@infradead.org>
Date: Mon, 27 Oct 2025 21:04:09 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: linux-kernel@...r.kernel.org
Cc: Randy Dunlap <rdunlap@...radead.org>,
	Fei Li <fei1.li@...el.com>,
	acrn-dev@...ts.projectacrn.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] virt: acrn: split acrn_mmio_dev_res out of acrn_mmiodev

Add struct acrn_mmio_dev_res before struct acrn_mmio_dev.
The former is used in the latter and breaking them up provides
better kernel-doc documentation for the struct members.

Suggested-by: Fei Li <fei1.li@...el.com>
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Acked-by: Fei Li <fei1.li@...el.com>
---
Cc: acrn-dev@...ts.projectacrn.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/uapi/linux/acrn.h |   36 +++++++++++++++++++++---------------
 1 file changed, 21 insertions(+), 15 deletions(-)

--- linux-next-20251024.orig/include/uapi/linux/acrn.h
+++ linux-next-20251024/include/uapi/linux/acrn.h
@@ -418,26 +418,32 @@ struct acrn_pcidev {
 };
 
 /**
- * struct acrn_mmiodev - Info for assigning or de-assigning a MMIO device
- * @name:			Name of the MMIO device.
- * @res[].user_vm_pa:		Physical address of User VM of the MMIO region
- *				for the MMIO device.
- * @res[].service_vm_pa:	Physical address of Service VM of the MMIO
- *				region for the MMIO device.
- * @res[].size:			Size of the MMIO region for the MMIO device.
- * @res[].mem_type:		Memory type of the MMIO region for the MMIO
- *				device.
+ * struct acrn_mmio_dev_res - MMIO device resource description
+ * @user_vm_pa:		Physical address of User VM of the MMIO region
+ *			for the MMIO device.
+ * @service_vm_pa:	Physical address of Service VM of the MMIO
+ *			region for the MMIO device.
+ * @size:		Size of the MMIO region for the MMIO device.
+ * @mem_type:		Memory type of the MMIO region for the MMIO
+ *			device.
+ */
+struct acrn_mmio_dev_res {
+	__u64	user_vm_pa;
+	__u64	service_vm_pa;
+	__u64	size;
+	__u64	mem_type;
+};
+
+/**
+ * struct acrn_mmiodev - Info for assigning or de-assigning an MMIO device
+ * @name:	Name of the MMIO device.
+ * @res:	Array of MMIO device descriptions
  *
  * This structure will be passed to hypervisor directly.
  */
 struct acrn_mmiodev {
 	__u8	name[8];
-	struct {
-		__u64	user_vm_pa;
-		__u64	service_vm_pa;
-		__u64	size;
-		__u64	mem_type;
-	} res[ACRN_MMIODEV_RES_NUM];
+	struct acrn_mmio_dev_res res[ACRN_MMIODEV_RES_NUM];
 };
 
 /**