[dpdk-dev] [PATCH v6 59/70] eal: add secondary process init with memory hotplug

[Anatoly Burakov]

Secondary initialization will just sync memory map with
primary process.

Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
Tested-by: Santosh Shukla <santosh.shukla at caviumnetworks.com>
Tested-by: Hemant Agrawal <hemant.agrawal at nxp.com>
Tested-by: Gowrishankar Muthukrishnan <gowrishankar.m at linux.vnet.ibm.com>
---
 lib/librte_eal/common/eal_common_memory.c |  1 +
 lib/librte_eal/linuxapp/eal/eal_memory.c  | 18 +++++++++++++++---
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c
index d519f15..fe5fdfc 100644
--- a/lib/librte_eal/common/eal_common_memory.c
+++ b/lib/librte_eal/common/eal_common_memory.c
@@ -20,6 +20,7 @@
 #include <rte_errno.h>
 #include <rte_log.h>
 
+#include "eal_memalloc.h"
 #include "eal_private.h"
 #include "eal_internal_cfg.h"
 
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index d919247..eb430a0 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -1777,6 +1777,18 @@ eal_legacy_hugepage_attach(void)
 	return -1;
 }
 
+static int
+eal_hugepage_attach(void)
+{
+	if (eal_memalloc_sync_with_primary()) {
+		RTE_LOG(ERR, EAL, "Could not map memory from primary process\n");
+		if (aslr_enabled() > 0)
+			RTE_LOG(ERR, EAL, "It is recommended to disable ASLR in the kernel and retry running both primary and secondary processes\n");
+		return -1;
+	}
+	return 0;
+}
+
 int
 rte_eal_hugepage_init(void)
 {
@@ -1788,9 +1800,9 @@ rte_eal_hugepage_init(void)
 int
 rte_eal_hugepage_attach(void)
 {
-	if (internal_config.legacy_mem)
-		return eal_legacy_hugepage_attach();
-	return -1;
+	return internal_config.legacy_mem ?
+			eal_legacy_hugepage_attach() :
+			eal_hugepage_attach();
 }
 
 int
-- 
2.7.4