From: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
[ Upstream commit 68dd9d89eaf56dfab8d46bf25610aa4650247617 ]
Commit 6ee1b77ba3ac ("iommu/vt-d: Add svm/sva invalidate function")
introduced intel_iommu_sva_invalidate() when CONFIG_INTEL_IOMMU_SVM.
This function uses the dedicated static variable inv_type_granu_table
and functions to_vtd_granularity() and to_vtd_size().
These parts are unused when !CONFIG_INTEL_IOMMU_SVM, and hence,
make CC=clang W=1 warns with an -Wunused-function warning.
Include these parts conditionally on CONFIG_INTEL_IOMMU_SVM.
Fixes: 6ee1b77ba3ac ("iommu/vt-d: Add svm/sva invalidate function")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
Acked-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201115205951.20698-1-lukas.bulwahn@xxxxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iommu/intel/iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index a49afa11673cc..c9da9e93f545c 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -5387,6 +5387,7 @@ static void intel_iommu_aux_detach_device(struct iommu_domain *domain,
aux_domain_remove_dev(to_dmar_domain(domain), dev);
}
+#ifdef CONFIG_INTEL_IOMMU_SVM
/*
* 2D array for converting and sanitizing IOMMU generic TLB granularity to
* VT-d granularity. Invalidation is typically included in the unmap operation
@@ -5433,7 +5434,6 @@ static inline u64 to_vtd_size(u64 granu_size, u64 nr_granules)
return order_base_2(nr_pages);
}
-#ifdef CONFIG_INTEL_IOMMU_SVM
static int
intel_iommu_sva_invalidate(struct iommu_domain *domain, struct device *dev,
struct iommu_cache_invalidate_info *inv_info)
--
2.27.0
