From: Christoph Hellwig <hch@lst.de>
To: iommu@lists.linux-foundation.org
Cc: Robin Murphy <robin.murphy@arm.com>,
David Rientjes <rientjes@google.com>
Subject: [PATCH 09/11] dma-direct: drop two CONFIG_DMA_RESTRICTED_POOL conditionals
Date: Thu, 11 Nov 2021 07:50:25 +0100 [thread overview]
Message-ID: <20211111065028.32761-10-hch@lst.de> (raw)
In-Reply-To: <20211111065028.32761-1-hch@lst.de>
swiotlb_alloc and swiotlb_free are properly stubbed out if
CONFIG_DMA_RESTRICTED_POOL is not set, so skip the extra checks.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
---
kernel/dma/direct.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 84226a764471b..cf75bfb2f499e 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -97,8 +97,7 @@ static int dma_set_encrypted(struct device *dev, void *vaddr, size_t size)
static void __dma_direct_free_pages(struct device *dev, struct page *page,
size_t size)
{
- if (IS_ENABLED(CONFIG_DMA_RESTRICTED_POOL) &&
- swiotlb_free(dev, page, size))
+ if (swiotlb_free(dev, page, size))
return;
dma_free_contiguous(dev, page, size);
}
@@ -114,8 +113,7 @@ static struct page *__dma_direct_alloc_pages(struct device *dev, size_t size,
gfp |= dma_direct_optimal_gfp_mask(dev, dev->coherent_dma_mask,
&phys_limit);
- if (IS_ENABLED(CONFIG_DMA_RESTRICTED_POOL) &&
- is_swiotlb_for_alloc(dev)) {
+ if (is_swiotlb_for_alloc(dev)) {
page = swiotlb_alloc(dev, size);
if (page && !dma_coherent_ok(dev, page_to_phys(page), size)) {
__dma_direct_free_pages(dev, page, size);
--
2.30.2
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next prev parent reply other threads:[~2021-11-11 6:50 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-11 6:50 dma-direct fixes and cleanups v3 Christoph Hellwig
2021-11-11 6:50 ` [PATCH 01/11] dma-direct: factor out dma_set_{de,en}crypted helpers Christoph Hellwig
2021-11-11 6:50 ` [PATCH 02/11] dma-direct: don't call dma_set_decrypted for remapped allocations Christoph Hellwig
2021-11-11 6:50 ` [PATCH 03/11] dma-direct: always leak memory that can't be re-encrypted Christoph Hellwig
2021-12-06 16:32 ` Robin Murphy
2021-12-07 11:48 ` Christoph Hellwig
2021-11-11 6:50 ` [PATCH 04/11] dma-direct: clean up the remapping checks in dma_direct_alloc Christoph Hellwig
2021-12-06 16:33 ` Robin Murphy
2021-12-07 11:49 ` Christoph Hellwig
2021-12-07 12:43 ` Robin Murphy
2021-11-11 6:50 ` [PATCH 05/11] dma-direct: factor out a helper for DMA_ATTR_NO_KERNEL_MAPPING allocations Christoph Hellwig
2021-11-11 6:50 ` [PATCH 06/11] dma-direct: refactor the !coherent checks in dma_direct_alloc Christoph Hellwig
2021-12-06 16:33 ` Robin Murphy
2021-11-11 6:50 ` [PATCH 07/11] dma-direct: fail allocations that can't be made coherent Christoph Hellwig
2021-12-06 16:33 ` Robin Murphy
2021-11-11 6:50 ` [PATCH 08/11] dma-direct: warn if there is no pool for force unencrypted allocations Christoph Hellwig
2021-11-11 6:50 ` Christoph Hellwig [this message]
2021-11-11 6:50 ` [PATCH 10/11] dma-direct: factor the swiotlb code out of __dma_direct_alloc_pages Christoph Hellwig
2021-11-11 6:50 ` [PATCH 11/11] dma-direct: add a dma_direct_use_pool helper Christoph Hellwig
2021-12-08 15:44 ` Marek Szyprowski
2021-12-08 15:48 ` Christoph Hellwig
2021-11-16 11:31 ` dma-direct fixes and cleanups v3 Robin Murphy
2021-11-17 5:51 ` Christoph Hellwig
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