Hi
On 2/22/19 1:06 PM, Lu Baolu wrote:
Do you mind checking this?
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 6ecdcf8fc8c0..f62f30bc1339 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2632,6 +2632,9 @@ static struct dmar_domain
*find_or_alloc_domain(struct device *dev, int gaw)
goto out;
}
+ if (!iommu_should_identity_map(dev, 0))
+ return si_domain;
+
/* Allocate and initialize new domain for the device */
domain = alloc_domain(0);
if (!domain)
Oops! This can't be compiled. Please try below instead if you'd like to.
Sorry about it.
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 6ecdcf8fc8c0..b89f5ba6a3c8 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -174,6 +174,8 @@ static inline unsigned long virt_to_dma_pfn(void *p)
return page_to_dma_pfn(virt_to_page(p));
}
+static int iommu_should_identity_map(struct device *dev, int startup);
+
/* global iommu list, set NULL for ignored DMAR units */
static struct intel_iommu **g_iommus;
@@ -2632,6 +2634,9 @@ static struct dmar_domain
*find_or_alloc_domain(struct device *dev, int gaw)
goto out;
}
+ if (iommu_should_identity_map(dev, 0))
+ return si_domain;
+
/* Allocate and initialize new domain for the device */
domain = alloc_domain(0);
if (!domain)
Best regards,
Lu Baolu
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