mem: honor IOVA mode for no-huge case

With the introduction of IOVA mode, the only blocker to run
with 4KB pages for NICs binding to vfio-pci, is that
RTE_BAD_PHYS_ADDR is not a valid IOVA address.

We can refine this by using VA as IOVA if it's IOVA mode.

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>

diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 28bca49..187d338 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -1030,7 +1030,10 @@ rte_eal_hugepage_init(void)
                                        strerror(errno));
                        return -1;
                }
-               mcfg->memseg[0].phys_addr = RTE_BAD_PHYS_ADDR;
+               if (rte_eal_iova_mode() == RTE_IOVA_VA)
+                       mcfg->memseg[0].phys_addr = (uintptr_t)addr;
+               else
+                       mcfg->memseg[0].phys_addr = RTE_BAD_PHYS_ADDR;
                mcfg->memseg[0].addr = addr;
                mcfg->memseg[0].hugepage_sz = RTE_PGSIZE_4K;
                mcfg->memseg[0].len = internal_config.memory;