Messages in this thread Patch in this message | | | From | Lu Baolu <> | Subject | [PATCH v6 1/8] iommu/vt-d: Don't switch off swiotlb if use direct dma | Date | Tue, 30 Jul 2019 12:52:22 +0800 |
| |
The direct dma implementation depends on swiotlb. Hence, don't switch off swiotlb since direct dma interfaces are used in this driver.
Cc: Ashok Raj <ashok.raj@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> --- drivers/iommu/intel-iommu.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index bdaed2da8a55..8064af607d3b 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4568,9 +4568,6 @@ static int __init platform_optin_force_iommu(void) iommu_identity_mapping |= IDENTMAP_ALL; dmar_disabled = 0; -#if defined(CONFIG_X86) && defined(CONFIG_SWIOTLB) - swiotlb = 0; -#endif no_iommu = 0; return 1; @@ -4709,9 +4706,6 @@ int __init intel_iommu_init(void) } up_write(&dmar_global_lock); -#if defined(CONFIG_X86) && defined(CONFIG_SWIOTLB) - swiotlb = 0; -#endif dma_ops = &intel_dma_ops; init_iommu_pm_ops(); -- 2.17.1
| |