Hi Joerg,
On 12/27/17 4:20 PM, Suravee Suthikulpanit wrote:
Implement the newly added IOTLB flushing interface for AMD IOMMU.
Signed-off-by: Suravee Suthikulpanit <[email protected]>
---
drivers/iommu/amd_iommu.c | 73 ++++++++++++++++++++++++++++++++++++++++-
drivers/iommu/amd_iommu_init.c | 7 ++++
drivers/iommu/amd_iommu_types.h | 7 ++++
3 files changed, 86 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 7d5eb00..42fe365 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
...
@@ -3163,6 +3168,69 @@ static bool amd_iommu_is_attach_deferred(struct
iommu_domain *domain,
return dev_data->defer_attach;
}
+static void amd_iommu_flush_iotlb_all(struct iommu_domain *domain)
+{
+ struct protection_domain *dom = to_pdomain(domain);
+
+ domain_flush_tlb_pde(dom);
+}
I made a mistake here ...
...
+static void amd_iommu_iotlb_sync(struct iommu_domain *domain)
+{
+ struct protection_domain *pdom = to_pdomain(domain);
+ struct amd_iommu_flush_entries *entry, *next;
+ unsigned long flags;
+
+ /* Note:
+ * Currently, IOMMU driver just flushes the whole IO/TLB for
+ * a given domain. So, just remove entries from the list here.
+ */
+ spin_lock_irqsave(&amd_iommu_flush_list_lock, flags);
+ list_for_each_entry_safe(entry, next, &amd_iommu_flush_list, list) {
+ list_del(&entry->list);
+ kfree(entry);
+ }
+ spin_unlock_irqrestore(&amd_iommu_flush_list_lock, flags);
+
+ domain_flush_tlb_pde(pdom);
+}
... and here where I should also call domain_flush_complete() after
domain_flush_tlb_pde(). I'll send out a new version (v3) as a separate patch
from the series.
Thanks,
Suravee
