On Wed, Jul 15, 2026 at 09:21:16AM +0300, Leon Romanovsky wrote:
On Wed, Jul 08, 2026 at 11:48:47PM +0000, Samiullah Khawaja wrote:
Add an API that uses cma_for_each() to check whether a DMA allocation is
from a CMA region.
Signed-off-by: Samiullah Khawaja <[email protected]>
---
include/linux/dma-map-ops.h | 6 ++++++
kernel/dma/contiguous.c | 24 ++++++++++++++++++++++++
2 files changed, 30 insertions(+)
<...>
#ifdef CONFIG_DMA_DECLARE_COHERENT
diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index 03f52bd17120..0b1702bf39ca 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c
@@ -130,6 +130,30 @@ struct cma *dev_get_cma_area(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_get_cma_area);
+struct dma_cma_check_data {
+ phys_addr_t start;
+ phys_addr_t end;
+};
If this series is retried, use "struct phys_vec" here instead of
declaring a new structure:
https://elixir.bootlin.com/linux/v7.1.3/source/include/linux/types.h#L173
Sure this sounds great.
Thanks.
Sami
