From: Lu Baolu <baolu.lu@linux.intel.com> To: David Woodhouse <dwmw2@infradead.org>, Joerg Roedel <joro@8bytes.org>, Bjorn Helgaas <bhelgaas@google.com>, Christoph Hellwig <hch@lst.de> Cc: ashok.raj@intel.com, jacob.jun.pan@intel.com, alan.cox@intel.com, kevin.tian@intel.com, mika.westerberg@linux.intel.com, Ingo Molnar <mingo@redhat.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, pengfei.xu@intel.com, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Marek Szyprowski <m.szyprowski@samsung.com>, Robin Murphy <robin.murphy@arm.com>, Jonathan Corbet <corbet@lwn.net>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Juergen Gross <jgross@suse.com>, Stefano Stabellini <sstabellini@kernel.org>, Steven Rostedt <rostedt@goodmis.org>, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Lu Baolu <baolu.lu@linux.intel.com>, Jacob Pan <jacob.jun.pan@linux.intel.com> 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 [thread overview] Message-ID: <20190730045229.3826-2-baolu.lu@linux.intel.com> (raw) In-Reply-To: <20190730045229.3826-1-baolu.lu@linux.intel.com> 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
WARNING: multiple messages have this Message-ID (diff)
From: Lu Baolu <baolu.lu@linux.intel.com> To: David Woodhouse <dwmw2@infradead.org>, Joerg Roedel <joro@8bytes.org>, Bjorn Helgaas <bhelgaas@google.com>, Christoph Hellwig <hch@lst.de> Cc: Juergen Gross <jgross@suse.com>, kevin.tian@intel.com, Stefano Stabellini <sstabellini@kernel.org>, ashok.raj@intel.com, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, alan.cox@intel.com, Jonathan Corbet <corbet@lwn.net>, Robin Murphy <robin.murphy@arm.com>, Steven Rostedt <rostedt@goodmis.org>, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, pengfei.xu@intel.com, Ingo Molnar <mingo@redhat.com>, jacob.jun.pan@intel.com, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, mika.westerberg@linux.intel.com 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 [thread overview] Message-ID: <20190730045229.3826-2-baolu.lu@linux.intel.com> (raw) In-Reply-To: <20190730045229.3826-1-baolu.lu@linux.intel.com> 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 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2019-07-30 4:53 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-30 4:52 [PATCH v6 0/8] iommu: Bounce page for untrusted devices Lu Baolu 2019-07-30 4:52 ` Lu Baolu 2019-07-30 4:52 ` Lu Baolu [this message] 2019-07-30 4:52 ` [PATCH v6 1/8] iommu/vt-d: Don't switch off swiotlb if use direct dma Lu Baolu 2019-07-30 4:52 ` [PATCH v6 2/8] PCI: Add dev_is_untrusted helper Lu Baolu 2019-07-30 4:52 ` Lu Baolu 2019-07-30 4:52 ` [PATCH v6 3/8] swiotlb: Split size parameter to map/unmap APIs Lu Baolu 2019-07-30 4:52 ` Lu Baolu 2019-07-30 4:52 ` [PATCH v6 4/8] swiotlb: Zero out bounce buffer for untrusted device Lu Baolu 2019-07-30 4:52 ` Lu Baolu 2019-07-30 4:52 ` [PATCH v6 5/8] iommu: Add bounce page APIs Lu Baolu 2019-07-30 4:52 ` Lu Baolu 2019-08-14 8:38 ` Joerg Roedel 2019-08-14 8:38 ` Joerg Roedel 2019-08-15 6:15 ` Lu Baolu 2019-08-15 6:15 ` Lu Baolu 2019-08-15 15:48 ` Joerg Roedel 2019-08-15 15:48 ` Joerg Roedel 2019-08-16 2:45 ` Lu Baolu 2019-08-16 2:45 ` Lu Baolu 2019-08-16 4:46 ` Christoph Hellwig 2019-08-16 4:46 ` Christoph Hellwig 2019-08-18 3:07 ` Lu Baolu 2019-08-18 3:07 ` Lu Baolu 2019-07-30 4:52 ` [PATCH v6 6/8] iommu/vt-d: Check whether device requires bounce buffer Lu Baolu 2019-07-30 4:52 ` Lu Baolu 2019-07-30 4:52 ` [PATCH v6 7/8] iommu/vt-d: Add trace events for device dma map/unmap Lu Baolu 2019-07-30 4:52 ` Lu Baolu 2019-07-30 4:52 ` [PATCH v6 8/8] iommu/vt-d: Use bounce buffer for untrusted devices Lu Baolu 2019-07-30 4:52 ` Lu Baolu
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