From: Christoph Hellwig <hch@lst.de>
To: iommu@lists.linux-foundation.org
Cc: x86@kernel.org, Stefano Stabellini <sstabellini@kernel.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Juergen Gross <jgross@suse.com>, Joerg Roedel <joro@8bytes.org>,
David Woodhouse <dwmw2@infradead.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org,
xen-devel@lists.xenproject.org, linux-ia64@vger.kernel.org,
linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
linux-hyperv@vger.kernel.org, tboot-devel@lists.sourceforge.net,
linux-pci@vger.kernel.org
Subject: [PATCH 02/11] swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set
Date: Tue, 22 Feb 2022 16:35:05 +0100 [thread overview]
Message-ID: <20220222153514.593231-3-hch@lst.de> (raw)
In-Reply-To: <20220222153514.593231-1-hch@lst.de>
If force bouncing is enabled we can't release the bufffers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
kernel/dma/swiotlb.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index f1e7ea160b433..36fbf1181d285 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -378,6 +378,9 @@ void __init swiotlb_exit(void)
unsigned long tbl_vaddr;
size_t tbl_size, slots_size;
+ if (swiotlb_force == SWIOTLB_FORCE)
+ return;
+
if (!mem->nslabs)
return;
--
2.30.2
next prev parent reply other threads:[~2022-02-22 15:36 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 15:35 cleanup swiotlb initialization Christoph Hellwig
2022-02-22 15:35 ` [PATCH 01/11] dma-direct: use is_swiotlb_active in dma_direct_map_page Christoph Hellwig
2022-02-24 10:26 ` Anshuman Khandual
2022-02-22 15:35 ` Christoph Hellwig [this message]
2022-02-24 10:29 ` [PATCH 02/11] swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set Anshuman Khandual
2022-02-22 15:35 ` [PATCH 03/11] swiotlb: simplify swiotlb_max_segment Christoph Hellwig
2022-02-24 10:34 ` Anshuman Khandual
2022-02-22 15:35 ` [PATCH 04/11] swiotlb: rename swiotlb_late_init_with_default_size Christoph Hellwig
2022-02-24 10:36 ` Anshuman Khandual
2022-02-22 15:35 ` [PATCH 05/11] swiotlb: pass a gfp_mask argument to swiotlb_init_late Christoph Hellwig
2022-02-24 10:41 ` Anshuman Khandual
2022-02-22 15:35 ` [PATCH 06/11] MIPS/octeon: use swiotlb_init instead of open coding it Christoph Hellwig
2022-02-22 15:35 ` [PATCH 07/11] x86: remove the IOMMU table infrastructure Christoph Hellwig
2022-02-24 10:18 ` Anshuman Khandual
2022-02-22 15:35 ` [PATCH 08/11] swiotlb: make the swiotlb_init interface more useful Christoph Hellwig
2022-02-22 15:35 ` [PATCH 09/11] swiotlb: add a SWIOTLB_ANY flag to lift the low memory restriction Christoph Hellwig
2022-02-22 15:35 ` [PATCH 10/11] swiotlb: merge swiotlb-xen initialization into swiotlb Christoph Hellwig
2022-02-24 10:16 ` Anshuman Khandual
2022-02-22 15:35 ` [PATCH 11/11] x86: remove cruft from <asm/dma-mapping.h> Christoph Hellwig
2022-02-24 0:57 ` cleanup swiotlb initialization Boris Ostrovsky
2022-02-24 15:58 ` Christoph Hellwig
2022-02-24 16:18 ` Boris Ostrovsky
2022-02-24 16:39 ` Christoph Hellwig
2022-02-24 17:07 ` Boris Ostrovsky
2022-02-25 8:47 ` Christoph Hellwig
2022-02-25 15:24 ` Boris Ostrovsky
2022-02-27 14:30 cleanup swiotlb initialization v2 Christoph Hellwig
2022-02-27 14:30 ` [PATCH 02/11] swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set Christoph Hellwig
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