Re: [PATCH v4 2/8] iommu/dma: Introduce generic helper to retrieve RMR info
From: Joerg Roedel <joro@8bytes.org>
Date: 2021-05-18 08:51:32
Also in:
linux-acpi, linux-iommu
On Thu, May 13, 2021 at 02:45:44PM +0100, Shameer Kolothum wrote:
+/**
+ * struct iommu_rmr - Reserved Memory Region details per IOMMU
+ * @list: Linked list pointers to hold RMR region info
+ * @base_address: base address of Reserved Memory Region
+ * @length: length of memory region
+ * @sid: associated stream id
+ * @flags: flags that apply to the RMR node
+ */
+struct iommu_rmr {
+ struct list_head list;
+ phys_addr_t base_address;
+ u64 length;
+ u32 sid;
+ u32 flags;
+};
+
+/* RMR Remap permitted */
+#define IOMMU_RMR_REMAP_PERMITTED (1 << 0)
+This struct has lots of overlap with 'struct iommu_resv_region'. Any reason the existing struct can't be used here? Regards, Joerg _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel