Commit-ID: 21129f786f231f7a9dce5b504617b893f50a435f
Gitweb: http://git.kernel.org/tip/21129f786f231f7a9dce5b504617b893f50a435f
Author: Joerg Roedel <joerg.roedel@xxxxxxx>
AuthorDate: Tue, 1 Sep 2009 11:59:42 +0200
Committer: Joerg Roedel <joerg.roedel@xxxxxxx>
CommitDate: Thu, 3 Sep 2009 16:15:45 +0200
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@xxxxxxx>
---
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);
+ }
}
/*
--
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