[PATCH 5/7] x86/amd-iommu: Add function to commit domain changes

[Joerg Roedel <joerg.roedel@amd.com>]

This patch adds the function iommu_update_domain() which
makes sure that the hardware caches are in sync with the
software changes. This function is used in the iommu-api
path.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
 arch/x86/kernel/amd_iommu.c |   15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index bda00f0..4063f55 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -761,6 +761,13 @@ static void iommu_update_domain_dte(struct protection_domain *domain)
 	domain->flush.dte = false;
 }
 
+static void iommu_update_domain(struct protection_domain *domain)
+{
+	iommu_update_domain_dte(domain);
+	iommu_update_domain_tlb(domain, false);
+	iommu_flush_complete(domain);
+}
+
 /****************************************************************************
  *
  * The functions below are used the create the page table mappings for
@@ -899,8 +906,6 @@ static int iommu_map_page(struct protection_domain *dom,
 
 	*pte = __pte;
 
-	iommu_update_domain_dte(dom);
-
 	return 0;
 }
 
@@ -2495,8 +2500,7 @@ static int amd_iommu_map_range(struct iommu_domain *dom,
 	if (unlikely(amd_iommu_np_cache))
 		update_flush_info_tlb(domain, iova, iova + size);
 
-	iommu_update_domain_tlb(domain, true);
-	iommu_flush_complete(domain);
+	iommu_update_domain(domain);
 
 	return 0;
 }
@@ -2517,8 +2521,7 @@ static void amd_iommu_unmap_range(struct iommu_domain *dom,
 
 	update_flush_info_tlb(domain, iova, iova + size);
 
-	iommu_update_domain_tlb(domain, true);
-	iommu_flush_complete(domain);
+	iommu_update_domain(domain);
 }
 
 static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
-- 
1.6.6