New upstream version 18.11-rc3

[deb_dpdk.git] / lib / librte_eal / common / eal_common_memory.c

diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c
index 87fd992..d47ea49 100644 (file)
--- a/lib/librte_eal/common/eal_common_memory.c
+++ b/lib/librte_eal/common/eal_common_memory.c
@@ -439,11 +439,7 @@ check_iova(const struct rte_memseg_list *msl __rte_unused,
        return 1;
 }
 
-#if defined(RTE_ARCH_64)
 #define MAX_DMA_MASK_BITS 63
-#else
-#define MAX_DMA_MASK_BITS 31
-#endif
 
 /* check memseg iovas are within the required range based on dma mask */
 static int __rte_experimental
@@ -453,7 +449,8 @@ check_dma_mask(uint8_t maskbits, bool thread_unsafe)
        uint64_t mask;
        int ret;
 
-       /* sanity check */
+       /* Sanity check. We only check width can be managed with 64 bits
+        * variables. Indeed any higher value is likely wrong. */
        if (maskbits > MAX_DMA_MASK_BITS) {
                RTE_LOG(ERR, EAL, "wrong dma mask size %u (Max: %u)\n",
                                   maskbits, MAX_DMA_MASK_BITS);