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H A D | chacha20poly1305.c | 255f6c2e Mon Sep 14 22:30:24 CDT 2020 Herbert Xu <herbert@gondor.apana.org.au> crypto: lib/chacha20poly1305 - Set SG_MITER_ATOMIC unconditionally
There is no reason for the chacha20poly1305 SG miter code to use kmap instead of kmap_atomic as the critical section doesn't sleep anyway. So we can simply get rid of the preemptible check and set SG_MITER_ATOMIC unconditionally.
Even if we need to reenable preemption to lower latency we should be doing that by interrupting the SG miter walk rather than using kmap.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 255f6c2e Mon Sep 14 22:30:24 CDT 2020 Herbert Xu <herbert@gondor.apana.org.au> crypto: lib/chacha20poly1305 - Set SG_MITER_ATOMIC unconditionally There is no reason for the chacha20poly1305 SG miter code to use kmap instead of kmap_atomic as the critical section doesn't sleep anyway. So we can simply get rid of the preemptible check and set SG_MITER_ATOMIC unconditionally. Even if we need to reenable preemption to lower latency we should be doing that by interrupting the SG miter walk rather than using kmap. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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