Hi

Am 11.01.22 um 14:56 schrieb Matthew Wilcox:

On Tue, Jan 11, 2022 at 12:40:10PM +0100, Thomas Zimmermann wrote:

quoted

Hi

Am 10.01.22 um 20:34 schrieb Matthew Wilcox:

quoted

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)
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