On Thu, Oct 30, 2014 at 06:19:33PM +0100, Maxime Ripard wrote:

quoted

With AF_ALG and cryptodev, the SG is in highmem. Verified with some
PageHighMem().

Then fix AF_ALG and cryptodev, because all of the other drivers might
be affected.

No it's the driver that needs to be fixed.  Of course if there
are enough drivers it may be worthwhile adding either copying or
a software fallback for highmem requests.

Cheers,
-- 
Email: Herbert Xu [off-list ref]
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