adstraw commented on code in PR #13381: URL: https://github.com/apache/tvm/pull/13381#discussion_r1023086521
########## src/runtime/hexagon/hexagon_buffer.cc: ########## @@ -237,8 +236,15 @@ void hexagon_buffer_copy_across_regions(const BufferSet& dest, const BufferSet& // Finally, do the memory copies. for (const auto& copy : macro_copies) { - int error_code = hexagon_user_dma_1d_sync(copy.dest, copy.src, copy.num_bytes); - CHECK_EQ(error_code, 0); + qurt_mem_cache_clean(reinterpret_cast<qurt_addr_t>(copy.dest), copy.num_bytes, + QURT_MEM_CACHE_INVALIDATE, QURT_MEM_DCACHE); + qurt_mem_cache_clean(reinterpret_cast<qurt_addr_t>(copy.src), copy.num_bytes, + QURT_MEM_CACHE_INVALIDATE, QURT_MEM_DCACHE); + memcpy(copy.dest, copy.src, copy.num_bytes); + qurt_mem_cache_clean(reinterpret_cast<qurt_addr_t>(copy.dest), copy.num_bytes, + QURT_MEM_CACHE_INVALIDATE, QURT_MEM_DCACHE); + qurt_mem_cache_clean(reinterpret_cast<qurt_addr_t>(copy.src), copy.num_bytes, + QURT_MEM_CACHE_INVALIDATE, QURT_MEM_DCACHE); Review Comment: Will do. Just to be clear, I think we would still need to invalidate the ION buffer itself in case it's dirty in cache. So, we would save 75% of the cache invalidations and the memcpy. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@tvm.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org