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 -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
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