On Tue, Jul 05, 2016 at 06:19:24PM +0530, Jerin Jacob wrote: > Split out SSE instruction based virtio simple Rx > implementation to a separate file > > Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
Hi, I was about to apply this set. I then did some build test and found a weird issue: it breaks the build with clang (ubuntu 16.04). drivers/net/virtio/virtio_rxtx_simple_sse.c:130:2: error: cast from 'const void *' to 'void *' drops const qualifier [-Werror,-Wcast-qual] _mm_prefetch((const void *)rused, _MM_HINT_T0); ^ /usr/lib/llvm-3.8/bin/../lib/clang/3.8.0/include/xmmintrin.h:684:58: note: expanded from macro '_mm_prefetch' #define _mm_prefetch(a, sel) (__builtin_prefetch((void *)(a), 0, (sel))) ^ 1 error generated. Weird enough I don't see this issue before this commit: the error line is exactly the same before and after this commit. Another note is that _mm_prefetch() is actually with different prototype for gcc and clang. For gcc, we have: _mm_prefetch (const void *__P, enum _mm_hint __I) Any thoughts? --yliu