Hi
Am 11.01.22 um 14:56 schrieb Matthew Wilcox:
On Tue, Jan 11, 2022 at 12:40:10PM +0100, Thomas Zimmermann wrote:
Hi
Am 10.01.22 um 20:34 schrieb Matthew Wilcox:
TLDR: I want to introduce a new data type:
struct phyr { phys_addr_t addr; size_t len; };
Did you look at struct dma_buf_map? [1]
Thanks. I wasn't aware of that. It doesn't seem to actually solve the problem, in that it doesn't carry any length information. Did you mean to point me at a different structure?
It's the structure I meant. It refers to a buffer, so the length could be added. For something more sophisticated, dma_buf_map could be changed to distinguish between the buffer and an iterator pointing into the buffer.
But if it's really different, then so be it.
Best regards Thomas