Messages in this thread Patch in this message | | | From | korantwork@gmail ... | Subject | [PATCH] x86,iommu:cleanup misleading comment about SWIOTLB turned off by IOMMU | Date | Wed, 15 Jun 2022 17:06:39 +0800 |
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From: Xinghui Li <korantli@tencent.com>
According to commit 327d5b2fee91 ("iommu/vt-d: Allow 32bit devices to uses DMA domain"), SWIOTLB could be enable even IOMMU exist.This comment could mislead developer that there is an error enabling SWIOTLB when they enable IOMMU.
Signed-off-by: Xinghui Li <korantli@tencent.com> --- arch/x86/kernel/pci-dma.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 30bbe4abb5d6..c0434abf7e09 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -193,7 +193,6 @@ static int __init pci_iommu_init(void) x86_init.iommu.iommu_init(); #ifdef CONFIG_SWIOTLB - /* An IOMMU turned us off. */ if (x86_swiotlb_enable) { pr_info("PCI-DMA: Using software bounce buffering for IO (SWIOTLB)\n"); swiotlb_print_info(); -- 2.25.1
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