diff mbox series

[v5,02/11] iommu/dma: use iommu_put_pages_list() to releae freelist

Message ID 20240222173942.1481394-3-pasha.tatashin@soleen.com (mailing list archive)
State New
Headers show
Series IOMMU memory observability | expand

Commit Message

Pasha Tatashin Feb. 22, 2024, 5:39 p.m. UTC 
Free the IOMMU page tables via iommu_put_pages_list(). The page tables
were allocated via iommu_alloc_* functions in architecture specific
places, but are released in dma-iommu if the freelist is gathered during
map/unmap operations into iommu_iotlb_gather data structure.

Currently, only iommu/intel that does that.

Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
---
 drivers/iommu/dma-iommu.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Comments

David Rientjes March 15, 2024, 9:28 p.m. UTC | #1 
On Thu, 22 Feb 2024, Pasha Tatashin wrote:

> Free the IOMMU page tables via iommu_put_pages_list(). The page tables
> were allocated via iommu_alloc_* functions in architecture specific
> places, but are released in dma-iommu if the freelist is gathered during
> map/unmap operations into iommu_iotlb_gather data structure.
> 
> Currently, only iommu/intel that does that.
> 
> Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>

Acked-by: David Rientjes <rientjes@google.com>
diff mbox series

Patch

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 50ccc4f1ef81..fa0c4be79f9f 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -32,6 +32,7 @@ 
 #include <trace/events/swiotlb.h>
 
 #include "dma-iommu.h"
+#include "iommu-pages.h"
 
 struct iommu_dma_msi_page {
 	struct list_head	list;
@@ -156,7 +157,7 @@  static void fq_ring_free_locked(struct iommu_dma_cookie *cookie, struct iova_fq
 		if (fq->entries[idx].counter >= counter)
 			break;
 
-		put_pages_list(&fq->entries[idx].freelist);
+		iommu_put_pages_list(&fq->entries[idx].freelist);
 		free_iova_fast(&cookie->iovad,
 			       fq->entries[idx].iova_pfn,
 			       fq->entries[idx].pages);
@@ -254,7 +255,7 @@  static void iommu_dma_free_fq_single(struct iova_fq *fq)
 	int idx;
 
 	fq_ring_for_each(idx, fq)
-		put_pages_list(&fq->entries[idx].freelist);
+		iommu_put_pages_list(&fq->entries[idx].freelist);
 	vfree(fq);
 }
 
@@ -267,7 +268,7 @@  static void iommu_dma_free_fq_percpu(struct iova_fq __percpu *percpu_fq)
 		struct iova_fq *fq = per_cpu_ptr(percpu_fq, cpu);
 
 		fq_ring_for_each(idx, fq)
-			put_pages_list(&fq->entries[idx].freelist);
+			iommu_put_pages_list(&fq->entries[idx].freelist);
 	}
 
 	free_percpu(percpu_fq);