linux-kernel - Re: [PATCH -v2 9/9] x86: handle HW IOMMU initialization failure gracely

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Date:	Tue, 10 Nov 2009 12:27:23 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	linux-kernel@...r.kernel.org, chrisw@...s-sol.org,
	wmw2@...radead.org, joerg.roedel@....com, muli@...ibm.com
Subject: Re: [PATCH -v2 9/9] x86: handle HW IOMMU initialization failure
 gracely


this patch needed the fixlet below. (it could be cleaned up later 
perhaps to not need the #ifdef - but wanted to keep it simple for now.)

	Ingo

------------->
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index c7a8bcf..43d755a 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3252,7 +3252,9 @@ int __init intel_iommu_init(void)
 	"PCI-DMA: Intel(R) Virtualization Technology for Directed I/O\n");
 
 	init_timer(&unmap_timer);
+#ifdef CONFIG_SWIOTLB
 	swiotlb = 0;
+#endif
 	dma_ops = &intel_dma_ops;
 
 	init_iommu_sysfs();
--
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