[PATCH v2 17/18] vfio: Use it_page_size

[Alexey Kardashevskiy]

This makes use of the it_page_size from the iommu_table struct
as page size can differ.

This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code
as recently introduced IOMMU_PAGE_XXX macros do not include
IOMMU_PAGE_SHIFT.

Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>
---
 drivers/vfio/vfio_iommu_spapr_tce.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c
index d6264ac..e6cb18f 100644
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -59,7 +59,7 @@ static long tce_iommu_account_memlimit(struct iommu_table *tbl, bool inc)
 	if (!current->mm)
 		return -ESRCH; /* process exited */
 
-	npages = (tbl->it_size << IOMMU_PAGE_SHIFT_4K) >> PAGE_SHIFT;
+	npages = (tbl->it_size << tbl->it_page_shift) >> PAGE_SHIFT;
 	if (!inc)
 		npages = -npages;
 
@@ -228,8 +228,8 @@ static long tce_iommu_ioctl(void *iommu_data,
 		if (info.argsz < minsz)
 			return -EINVAL;
 
-		info.dma32_window_start = tbl->it_offset << IOMMU_PAGE_SHIFT_4K;
-		info.dma32_window_size = tbl->it_size << IOMMU_PAGE_SHIFT_4K;
+		info.dma32_window_start = tbl->it_offset << tbl->it_page_shift;
+		info.dma32_window_size = tbl->it_size << tbl->it_page_shift;
 		info.flags = 0;
 
 		if (copy_to_user((void __user *)arg, &info, minsz))
@@ -282,17 +282,17 @@ static long tce_iommu_ioctl(void *iommu_data,
 		if (ret)
 			return ret;
 
-		for (i = 0; i < (param.size >> IOMMU_PAGE_SHIFT_4K); ++i) {
+		for (i = 0; i < (param.size >> tbl->it_page_shift); ++i) {
 			ret = iommu_put_tce_user_mode(tbl,
-					(param.iova >> IOMMU_PAGE_SHIFT_4K) + i,
+					(param.iova >> tbl->it_page_shift) + i,
 					tce);
 			if (ret)
 				break;
-			tce += IOMMU_PAGE_SIZE_4K;
+			tce += IOMMU_PAGE_SIZE(tbl);
 		}
 		if (ret)
 			iommu_clear_tces_and_put_pages(tbl,
-					param.iova >> IOMMU_PAGE_SHIFT_4K, i);
+					param.iova >> tbl->it_page_shift, i);
 
 		iommu_flush_tce(tbl);
 
@@ -333,13 +333,13 @@ static long tce_iommu_ioctl(void *iommu_data,
 		BUG_ON(!tbl->it_group);
 
 		ret = iommu_tce_clear_param_check(tbl, param.iova, 0,
-				param.size >> IOMMU_PAGE_SHIFT_4K);
+				param.size >> tbl->it_page_shift);
 		if (ret)
 			return ret;
 
 		ret = iommu_clear_tces_and_put_pages(tbl,
-				param.iova >> IOMMU_PAGE_SHIFT_4K,
-				param.size >> IOMMU_PAGE_SHIFT_4K);
+				param.iova >> tbl->it_page_shift,
+				param.size >> tbl->it_page_shift);
 		iommu_flush_tce(tbl);
 
 		return ret;
-- 
2.0.0