On Thu, Sep 26, 2019 at 8:54 PM Herbert Xu [off-list ref] wrote:

On Thu, Sep 26, 2019 at 07:54:03PM -0700, Linus Torvalds wrote:

quoted

Side note: almost nobody does this.

Almost every single async interface I've ever seen ends up being "only
designed for async".

And I think the reason is that everybody first does the simply
synchronous interfaces, and people start using those, and a lot of
people are perfectly happy with them. They are simple, and they work
fine for the huge majority of users.

The crypto API is not the way it is because of async.  In fact, the
crypto API started out as sync only and async was essentially
bolted on top with minimial changes.

Then what's up with the insistence on using physical addresses for so
many of the buffers?

--Andy

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