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iommu/amd: Finish TLB flush in amd_iommu_unmap()
author
Joerg Roedel
<jroedel@suse.de>
Fri, 13 Oct 2017 12:32:37 +0000
(14:32 +0200)
committer
Joerg Roedel
<jroedel@suse.de>
Fri, 13 Oct 2017 15:32:19 +0000
(17:32 +0200)
The function only sends the flush command to the IOMMU(s),
but does not wait for its completion when it returns. Fix
that.
Fixes:
601367d76bd1
('x86/amd-iommu: Remove iommu_flush_domain function')
Cc: stable@vger.kernel.org # >= 2.6.33
Signed-off-by: Joerg Roedel <jroedel@suse.de>
drivers/iommu/amd_iommu.c
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diff --git
a/drivers/iommu/amd_iommu.c
b/drivers/iommu/amd_iommu.c
index
822679a
..
8e8874d
100644
(file)
--- a/
drivers/iommu/amd_iommu.c
+++ b/
drivers/iommu/amd_iommu.c
@@
-3048,6
+3048,7
@@
static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
mutex_unlock(&domain->api_lock);
domain_flush_tlb_pde(domain);
+ domain_flush_complete(domain);
return unmap_size;
}