On 2021-03-19 17:26, John Garry wrote:
[...]
@@ -25,7 +25,8 @@ struct iova {
struct iova_magazine;
struct iova_cpu_rcache;
-#define IOVA_RANGE_CACHE_MAX_SIZE 6 /* log of max cached IOVA
range size (in pages) */
+#define IOVA_RANGE_CACHE_DEFAULT_SIZE 6
+#define IOVA_RANGE_CACHE_MAX_SIZE
On 19/03/2021 16:25, Robin Murphy wrote:
On 2021-03-19 13:25, John Garry wrote:
Some LLDs may request DMA mappings whose IOVA length exceeds that of the
current rcache upper limit.
This means that allocations for those IOVAs will never be cached, and
always must be allocated and freed from the
On 2021-03-19 13:25, John Garry wrote:
Some LLDs may request DMA mappings whose IOVA length exceeds that of the
current rcache upper limit.
This means that allocations for those IOVAs will never be cached, and
always must be allocated and freed from the RB tree per DMA mapping cycle.
This has a
