From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: "Kefeng Wang" <wangkefeng.wang@huawei.com>,
"Kees Cook" <keescook@chromium.org>,
"Yury Norov" <yury.norov@gmail.com>,
"Maíra Canal" <maira.canal@usp.br>,
"Nick Desaulniers" <ndesaulniers@google.com>,
iommu@lists.linux-foundation.org,
"Christophe JAILLET" <christophe.jaillet@wanadoo.fr>
Subject: [PATCH 2/4] iommu/vt-d: Drop duplicate check in dma_pte_free_pagetable()
Date: Fri, 17 Dec 2021 16:38:15 +0800 [thread overview]
Message-ID: <20211217083817.1745419-3-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20211217083817.1745419-1-baolu.lu@linux.intel.com>
From: Kefeng Wang <wangkefeng.wang@huawei.com>
The BUG_ON check exists in dma_pte_clear_range(), kill the duplicate
check.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Link: https://lore.kernel.org/r/20211025032307.182974-1-wangkefeng.wang@huawei.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
drivers/iommu/intel/iommu.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 4acc97765209..e59895af952c 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -1280,10 +1280,6 @@ static void dma_pte_free_pagetable(struct dmar_domain *domain,
unsigned long last_pfn,
int retain_level)
{
- BUG_ON(!domain_pfn_supported(domain, start_pfn));
- BUG_ON(!domain_pfn_supported(domain, last_pfn));
- BUG_ON(start_pfn > last_pfn);
-
dma_pte_clear_range(domain, start_pfn, last_pfn);
/* We don't need lock here; nobody else touches the iova range */
--
2.25.1
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next prev parent reply other threads:[~2021-12-17 8:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-17 8:38 [PATCH 0/4] [PULL REQUEST] Intel IOMMU Updates for Linux v5.17 Lu Baolu
2021-12-17 8:38 ` [PATCH 1/4] iommu/vt-d: Use bitmap_zalloc() when applicable Lu Baolu
2021-12-17 8:38 ` Lu Baolu [this message]
2021-12-17 8:38 ` [PATCH 3/4] iommu/vt-d: Remove unused dma_to_mm_pfn function Lu Baolu
2021-12-17 8:38 ` [PATCH 4/4] iommu/vt-d: Use correctly sized arguments for bit field Lu Baolu
2021-12-17 8:41 ` [PATCH 0/4] [PULL REQUEST] Intel IOMMU Updates for Linux v5.17 Joerg Roedel
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