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[16/19] iommu/amd: Use roundup_pow_two() instead of get_order()

Message ID 16-v1-416f64558c7c+2a5-iommu_pages_jgg@nvidia.com (mailing list archive)
State New
Headers show
Series iommu: Further abstract iommu-pages | expand

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Commit Message

Jason Gunthorpe Feb. 4, 2025, 6:34 p.m. UTC 
1 << (get_order(x) + PAGE_SHIFT) ==  roundup_pow_two()

Use the shorter version.

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---
 drivers/iommu/amd/init.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index f1c5041647173c..7d77929bc63af3 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -247,10 +247,7 @@  static void init_translation_status(struct amd_iommu *iommu)
 
 static inline unsigned long tbl_size(int entry_size, int last_bdf)
 {
-	unsigned shift = PAGE_SHIFT +
-			 get_order((last_bdf + 1) * entry_size);
-
-	return 1UL << shift;
+	return roundup_pow_of_two((last_bdf + 1) * entry_size);
 }
 
 int amd_iommu_get_num_iommus(void)