X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Flinux%2Feal%2Feal_memory.c;h=43e4ffc757bdc2e4d0dd324e4056cd437512f492;hb=6cfe84fbe7b166d272797c859966e387ef078e44;hp=226ac7014f1dc9a2d086ee29695e5811186c9084;hpb=3fe4bced1ba1f586ce5407e91537151d4eb43061;p=dpdk.git

diff --git a/lib/librte_eal/linux/eal/eal_memory.c b/lib/librte_eal/linux/eal/eal_memory.c
index 226ac7014f..43e4ffc757 100644
--- a/lib/librte_eal/linux/eal/eal_memory.c
+++ b/lib/librte_eal/linux/eal/eal_memory.c
@@ -69,6 +69,26 @@ static int phys_addrs_available = -1;
 
 #define RANDOMIZE_VA_SPACE_FILE "/proc/sys/kernel/randomize_va_space"
 
+uint64_t eal_get_baseaddr(void)
+{
+	/*
+	 * Linux kernel uses a really high address as starting address for
+	 * serving mmaps calls. If there exists addressing limitations and IOVA
+	 * mode is VA, this starting address is likely too high for those
+	 * devices. However, it is possible to use a lower address in the
+	 * process virtual address space as with 64 bits there is a lot of
+	 * available space.
+	 *
+	 * Current known limitations are 39 or 40 bits. Setting the starting
+	 * address at 4GB implies there are 508GB or 1020GB for mapping the
+	 * available hugepages. This is likely enough for most systems, although
+	 * a device with addressing limitations should call
+	 * rte_mem_check_dma_mask for ensuring all memory is within supported
+	 * range.
+	 */
+	return 0x100000000ULL;
+}
+
 /*
  * Get physical address of any mapped virtual address in the current process.
  */
@@ -811,6 +831,7 @@ alloc_memseg_list(struct rte_memseg_list *msl, uint64_t page_sz,
 	msl->page_sz = page_sz;
 	msl->socket_id = socket_id;
 	msl->base_va = NULL;
+	msl->heap = 1; /* mark it as a heap segment */
 
 	RTE_LOG(DEBUG, EAL, "Memseg list allocated: 0x%zxkB at socket %i\n",
 			(size_t)page_sz >> 10, socket_id);
@@ -1385,6 +1406,7 @@ eal_legacy_hugepage_init(void)
 		msl->page_sz = page_sz;
 		msl->socket_id = 0;
 		msl->len = internal_config.memory;
+		msl->heap = 1;
 
 		/* we're in single-file segments mode, so only the segment list
 		 * fd needs to be set up.
@@ -1657,6 +1679,7 @@ eal_legacy_hugepage_init(void)
 		mem_sz = msl->len;
 		munmap(msl->base_va, mem_sz);
 		msl->base_va = NULL;
+		msl->heap = 0;
 
 		/* destroy backing fbarray */
 		rte_fbarray_destroy(&msl->memseg_arr);