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x86/amd-iommu: Make sure a device is assigned in passthrough mode 

When the IOMMU driver runs in passthrough mode it has to
make sure that every device not assigned to an IOMMU-API
domain must be put into the passthrough domain instead of
keeping it unassigned.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
hifive-unleashed-5.1
Joerg Roedel 2009-09-01 11:59:42 +02:00
parent eba6ac60ba
commit 21129f786f
1 changed files with 9 additions and 0 deletions
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9
arch/x86/kernel/amd_iommu.c
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@ -1141,6 +1141,15 @@ static void __detach_device(struct protection_domain *domain, u16 devid)
/* ready */
spin_unlock(&domain->lock);
/*
* If we run in passthrough mode the device must be assigned to the
* passthrough domain if it is detached from any other domain
*/
if (iommu_pass_through) {
struct amd_iommu *iommu = amd_iommu_rlookup_table[devid];
__attach_device(iommu, pt_domain, devid);
}
}
/*