| From | Greg Kroah-Hartman <> | Subject | [ 061/122] iommu/amd: Fix hotplug with iommu=pt | Date | Tue, 7 Aug 2012 15:25:49 -0700 |
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From: Greg KH <gregkh@linuxfoundation.org>
3.5-stable review patch. If anyone has any objections, please let me know.
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From: Joerg Roedel <joerg.roedel@amd.com>
commit 2c9195e990297068d0f1f1bd8e2f1d09538009da upstream.
This did not work because devices are not put into the pt_domain. Fix this.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/iommu/amd_iommu.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)
--- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2254,6 +2254,18 @@ static int device_change_notifier(struct iommu_init_device(dev); + /* + * dev_data is still NULL and + * got initialized in iommu_init_device + */ + dev_data = get_dev_data(dev); + + if (iommu_pass_through || dev_data->iommu_v2) { + dev_data->passthrough = true; + attach_device(dev, pt_domain); + break; + } + domain = domain_for_device(dev); /* allocate a protection domain if a device is added */ @@ -2271,10 +2283,7 @@ static int device_change_notifier(struct dev_data = get_dev_data(dev); - if (!dev_data->passthrough) - dev->archdata.dma_ops = &amd_iommu_dma_ops; - else - dev->archdata.dma_ops = &nommu_dma_ops; + dev->archdata.dma_ops = &amd_iommu_dma_ops; break; case BUS_NOTIFY_DEL_DEVICE:
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