mem: make base address hint OS specific

[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 19ea475..4a9cc1f 100644 (file)
--- a/lib/librte_eal/common/eal_common_memory.c
+++ b/lib/librte_eal/common/eal_common_memory.c
@@ -40,23 +40,6 @@
 static void *next_baseaddr;
 static uint64_t system_page_sz;
 
-#ifdef RTE_ARCH_64
-/*
- * 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.
- */
-static uint64_t baseaddr = 0x100000000;
-#endif
-
 #define MAX_MMAP_WITH_DEFINED_ADDR_TRIES 5
 void *
 eal_get_virtual_area(void *requested_addr, size_t *size,
@@ -85,7 +68,7 @@ eal_get_virtual_area(void *requested_addr, size_t *size,
 #ifdef RTE_ARCH_64
        if (next_baseaddr == NULL && internal_config.base_virtaddr == 0 &&
                        rte_eal_process_type() == RTE_PROC_PRIMARY)
-               next_baseaddr = (void *) baseaddr;
+               next_baseaddr = (void *) eal_get_baseaddr();
 #endif
        if (requested_addr == NULL && next_baseaddr != NULL) {
                requested_addr = next_baseaddr;