From: Keqian Zhu <zhukeqian1@huawei.com>
To: <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<iommu@lists.linux-foundation.org>, <kvm@vger.kernel.org>,
<kvmarm@lists.cs.columbia.edu>,
Alex Williamson <alex.williamson@redhat.com>,
Cornelia Huck <cohuck@redhat.com>, Marc Zyngier <maz@kernel.org>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>,
Catalin Marinas <catalin.marinas@arm.com>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Mark Brown <broonie@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Alexios Zavras <alexios.zavras@intel.com>,
<wanghaibin.wang@huawei.com>, <jiangkunkun@huawei.com>,
Keqian Zhu <zhukeqian1@huawei.com>
Subject: [PATCH 5/7] vfio: iommu_type1: Drop parameter "pgsize" of vfio_dma_bitmap_alloc_all
Date: Thu, 10 Dec 2020 15:34:23 +0800 [thread overview]
Message-ID: <20201210073425.25960-6-zhukeqian1@huawei.com> (raw)
In-Reply-To: <20201210073425.25960-1-zhukeqian1@huawei.com>
We always use the smallest supported page size of vfio_iommu as
pgsize. Remove parameter "pgsize" of vfio_dma_bitmap_alloc_all.
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
---
drivers/vfio/vfio_iommu_type1.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 00684597b098..32ab889c8193 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -236,9 +236,10 @@ static void vfio_dma_populate_bitmap(struct vfio_dma *dma, size_t pgsize)
}
}
-static int vfio_dma_bitmap_alloc_all(struct vfio_iommu *iommu, size_t pgsize)
+static int vfio_dma_bitmap_alloc_all(struct vfio_iommu *iommu)
{
struct rb_node *n;
+ size_t pgsize = (size_t)1 << __ffs(iommu->pgsize_bitmap);
for (n = rb_first(&iommu->dma_list); n; n = rb_next(n)) {
struct vfio_dma *dma = rb_entry(n, struct vfio_dma, node);
@@ -2798,12 +2799,9 @@ static int vfio_iommu_type1_dirty_pages(struct vfio_iommu *iommu,
return -EINVAL;
if (dirty.flags & VFIO_IOMMU_DIRTY_PAGES_FLAG_START) {
- size_t pgsize;
-
mutex_lock(&iommu->lock);
- pgsize = 1 << __ffs(iommu->pgsize_bitmap);
if (!iommu->dirty_page_tracking) {
- ret = vfio_dma_bitmap_alloc_all(iommu, pgsize);
+ ret = vfio_dma_bitmap_alloc_all(iommu);
if (!ret)
iommu->dirty_page_tracking = true;
}
--
2.23.0
next prev parent reply other threads:[~2020-12-10 7:38 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 7:34 [PATCH 0/7] vfio: iommu_type1: Some fixes and optimization Keqian Zhu
2020-12-10 7:34 ` [PATCH 1/7] vfio: iommu_type1: Clear added dirty bit when unwind pin Keqian Zhu
2020-12-10 19:16 ` Alex Williamson
2020-12-11 6:51 ` zhukeqian
2020-12-15 0:16 ` Alex Williamson
2020-12-16 7:22 ` [kbuild] " Dan Carpenter
2020-12-10 7:34 ` [PATCH 2/7] vfio: iommu_type1: Initially set the pinned_page_dirty_scope Keqian Zhu
2020-12-10 7:34 ` [PATCH 3/7] vfio: iommu_type1: Make an explicit "promote" semantic Keqian Zhu
2020-12-10 7:34 ` [PATCH 4/7] vfio: iommu_type1: Fix missing dirty page when promote pinned_scope Keqian Zhu
2020-12-15 0:04 ` Alex Williamson
2020-12-15 9:37 ` zhukeqian
2020-12-15 15:53 ` Alex Williamson
2020-12-18 8:21 ` Keqian Zhu
2020-12-10 7:34 ` Keqian Zhu [this message]
2020-12-10 7:34 ` [PATCH 6/7] vfio: iommu_type1: Drop parameter "pgsize" of vfio_iova_dirty_bitmap Keqian Zhu
2020-12-10 7:34 ` [PATCH 7/7] vfio: iommu_type1: Drop parameter "pgsize" of update_user_bitmap Keqian Zhu
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