From: Joerg Roedel <joro@8bytes.org>
To: iommu@lists.linux-foundation.org,
Alex Williamson <alex.williamson@redhat.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Joerg Roedel <jroedel@suse.de>,
stable@vger.kernel.org, #@8bytes.org, =@8bytes.org,
2.6.33@8bytes.org
Subject: [PATCH 1/4] iommu/amd: Finish TLB flush in amd_iommu_unmap()
Date: Fri, 13 Oct 2017 16:40:10 +0200 [thread overview]
Message-ID: <1507905613-30695-2-git-send-email-joro@8bytes.org> (raw)
In-Reply-To: <1507905613-30695-1-git-send-email-joro@8bytes.org>
From: Joerg Roedel <jroedel@suse.de>
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 | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index cb7c531..3a702c4 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3046,6 +3046,7 @@ 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;
}
--
2.7.4
next prev parent reply other threads:[~2017-10-13 14:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-13 14:40 [PATCH 0/4] iommu/amd, vfio: Reduce IOTLB Flushm Rate Joerg Roedel
2017-10-13 14:40 ` Joerg Roedel [this message]
2017-10-13 14:40 ` [PATCH 2/4] iommu/amd: Implement IOMMU-API TLB flush interface Joerg Roedel
2017-10-13 14:40 ` [PATCH 3/4] vfio/type1: Make use of iommu_unmap_fast() Joerg Roedel
2017-10-13 14:40 ` [PATCH 4/4] vfio/type1: Gather TLB-syncs and pages to unpin Joerg Roedel
2017-10-13 17:02 ` Alex Williamson
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