Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 6/8] x86/amd-iommu: Make sure a device is assigned in passthrough mode | Date | Fri, 4 Sep 2009 11:36:32 +0200 |
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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> --- arch/x86/kernel/amd_iommu.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 9aa135d..a8e74c3 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -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); + } } /* -- 1.6.3.3
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