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From:   Keqian Zhu <zhukeqian1@huawei.com>
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CC:     Mark Rutland <mark.rutland@arm.com>,
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        Robin Murphy <robin.murphy@arm.com>,
        Joerg Roedel <joro@8bytes.org>,
        "Daniel Lezcano" <daniel.lezcano@linaro.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Julien Thierry <julien.thierry.kdev@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Alexios Zavras <alexios.zavras@intel.com>,
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Subject: [PATCH 6/6] vfio/iommu_type1: Drop parameter "pgsize" of update_user_bitmap
Date:   Thu, 7 Jan 2021 12:44:01 +0800
Message-ID: <20210107044401.19828-7-zhukeqian1@huawei.com>
In-Reply-To: <20210107044401.19828-1-zhukeqian1@huawei.com>
References: <20210107044401.19828-1-zhukeqian1@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

We always use the smallest supported page size of vfio_iommu as
pgsize. Drop parameter "pgsize" of update_user_bitmap.

Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
---
 drivers/vfio/vfio_iommu_type1.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 82649a040148..bceda5e8baaa 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -978,10 +978,9 @@ static void vfio_update_pgsize_bitmap(struct vfio_iommu *iommu)
 }
 
 static int update_user_bitmap(u64 __user *bitmap, struct vfio_iommu *iommu,
-			      struct vfio_dma *dma, dma_addr_t base_iova,
-			      size_t pgsize)
+			      struct vfio_dma *dma, dma_addr_t base_iova)
 {
-	unsigned long pgshift = __ffs(pgsize);
+	unsigned long pgshift = __ffs(iommu->pgsize_bitmap);
 	unsigned long nbits = dma->size >> pgshift;
 	unsigned long bit_offset = (dma->iova - base_iova) >> pgshift;
 	unsigned long copy_offset = bit_offset / BITS_PER_LONG;
@@ -1046,7 +1045,7 @@ static int vfio_iova_dirty_bitmap(u64 __user *bitmap, struct vfio_iommu *iommu,
 		if (dma->iova > iova + size - 1)
 			break;
 
-		ret = update_user_bitmap(bitmap, iommu, dma, iova, pgsize);
+		ret = update_user_bitmap(bitmap, iommu, dma, iova);
 		if (ret)
 			return ret;
 
@@ -1192,7 +1191,7 @@ static int vfio_dma_do_unmap(struct vfio_iommu *iommu,
 
 		if (unmap->flags & VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP) {
 			ret = update_user_bitmap(bitmap->data, iommu, dma,
-						 unmap->iova, pgsize);
+						 unmap->iova);
 			if (ret)
 				break;
 		}
-- 
2.19.1