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From: Nicholas Piggin <npiggin@gmail.com>
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>,
	iommu@lists.linux-foundation.org,
	Robin Murphy <robin.murphy@arm.com>,
	Christoph Hellwig <hch@lst.de>
Subject: [PATCH 2/5] kernel/dma: remove unnecessary unmap_kernel_range
Date: Tue, 26 Jan 2021 14:54:01 +1000	[thread overview]
Message-ID: <20210126045404.2492588-3-npiggin@gmail.com> (raw)
In-Reply-To: <20210126045404.2492588-1-npiggin@gmail.com>

vunmap will remove ptes.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: iommu@lists.linux-foundation.org
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 kernel/dma/remap.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/dma/remap.c b/kernel/dma/remap.c
index 905c3fa005f1..b4526668072e 100644
--- a/kernel/dma/remap.c
+++ b/kernel/dma/remap.c
@@ -66,6 +66,5 @@ void dma_common_free_remap(void *cpu_addr, size_t size)
 		return;
 	}
 
-	unmap_kernel_range((unsigned long)cpu_addr, PAGE_ALIGN(size));
 	vunmap(cpu_addr);
 }
-- 
2.23.0

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WARNING: multiple messages have this Message-ID (diff)
From: Nicholas Piggin <npiggin@gmail.com>
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>
Cc: Nicholas Piggin <npiggin@gmail.com>,
	linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Robin Murphy <robin.murphy@arm.com>,
	iommu@lists.linux-foundation.org
Subject: [PATCH 2/5] kernel/dma: remove unnecessary unmap_kernel_range
Date: Tue, 26 Jan 2021 14:54:01 +1000	[thread overview]
Message-ID: <20210126045404.2492588-3-npiggin@gmail.com> (raw)
In-Reply-To: <20210126045404.2492588-1-npiggin@gmail.com>

vunmap will remove ptes.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: iommu@lists.linux-foundation.org
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 kernel/dma/remap.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/dma/remap.c b/kernel/dma/remap.c
index 905c3fa005f1..b4526668072e 100644
--- a/kernel/dma/remap.c
+++ b/kernel/dma/remap.c
@@ -66,6 +66,5 @@ void dma_common_free_remap(void *cpu_addr, size_t size)
 		return;
 	}
 
-	unmap_kernel_range((unsigned long)cpu_addr, PAGE_ALIGN(size));
 	vunmap(cpu_addr);
 }
-- 
2.23.0



  parent reply	other threads:[~2021-01-26  4:54 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-26  4:53 [PATCH 0/5] mm/vmalloc: cleanup after hugepage series Nicholas Piggin
2021-01-26  4:54 ` [PATCH 1/5] mm/vmalloc: remove map_kernel_range Nicholas Piggin
2021-01-26  6:37   ` Christoph Hellwig
2021-01-26  4:54 ` Nicholas Piggin [this message]
2021-01-26  4:54   ` [PATCH 2/5] kernel/dma: remove unnecessary unmap_kernel_range Nicholas Piggin
2021-01-26  6:38   ` Christoph Hellwig
2021-01-26  6:38     ` Christoph Hellwig
2021-01-26 22:08   ` Konrad Rzeszutek Wilk
2021-01-26 22:08     ` Konrad Rzeszutek Wilk
2021-01-27  7:10     ` Christoph Hellwig
2021-01-27  7:10       ` Christoph Hellwig
2021-01-27 23:44       ` Nicholas Piggin
2021-01-27 23:44         ` Nicholas Piggin
2021-01-26  4:54 ` [PATCH 3/5] powerpc/xive: " Nicholas Piggin
2021-01-26  4:54   ` Nicholas Piggin
2021-01-26  6:38   ` Christoph Hellwig
2021-01-26  6:38     ` Christoph Hellwig
2021-01-26  7:25   ` Cédric Le Goater
2021-01-26  7:25     ` Cédric Le Goater
2021-01-26  4:54 ` [PATCH 4/5] mm/vmalloc: remove unmap_kernel_range Nicholas Piggin
2021-01-26  6:38   ` Christoph Hellwig
2021-01-26  4:54 ` [PATCH 5/5] mm/vmalloc: improve allocation failure error messages Nicholas Piggin
2021-01-26  6:39   ` Christoph Hellwig

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