From f251e187f2949c690fc13a91df7b873a6b5be671 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 5 Aug 2014 16:48:10 +0200 Subject: [PATCH] iommu/amd: Keep a list of devices in an alias group Some broken devices might use any request-id from the alias group, so we need to set a DTE entry for every device in there. This patch adds creation of those lists. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index fe6d7cc715f7..8a152564a098 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -93,6 +93,7 @@ static struct dma_map_ops amd_iommu_dma_ops; struct iommu_dev_data { struct list_head list; /* For domain->dev_list */ struct list_head dev_data_list; /* For global dev_data_list */ + struct list_head alias_list; /* Link alias-groups together */ struct iommu_dev_data *alias_data;/* The alias dev_data */ struct protection_domain *domain; /* Domain the device is bound to */ atomic_t bind; /* Domain attach reference count */ @@ -135,6 +136,8 @@ static struct iommu_dev_data *alloc_dev_data(u16 devid) if (!dev_data) return NULL; + INIT_LIST_HEAD(&dev_data->alias_list); + dev_data->devid = devid; atomic_set(&dev_data->bind, 0); @@ -383,6 +386,9 @@ static int iommu_init_device(struct device *dev) return -ENOTSUPP; } dev_data->alias_data = alias_data; + + /* Add device to the alias_list */ + list_add(&dev_data->alias_list, &alias_data->alias_list); } ret = init_iommu_group(dev); -- GitLab