From 75327bc67e9acb646d3c810956524ceb1927065a Mon Sep 17 00:00:00 2001
From: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Date: Tue, 14 Aug 2018 10:45:49 +0200
Subject: [PATCH] env/dpdk: allow 0 requested memory size

Now that DPDK can reserve additional memory on the fly,
the initial requested memory only serves as preallocation
and it makes sense to request no preallocated memory.

Right now, passing `--mem-size 0` counterintuitively
tries to reserve all hugepages on the system.

Change-Id: I281900efc7bd0bbb7eed30161ba0b88e16195170
Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/422241
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
---
 lib/env_dpdk/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/env_dpdk/init.c b/lib/env_dpdk/init.c
index 7b2bef00c..f715c2401 100644
--- a/lib/env_dpdk/init.c
+++ b/lib/env_dpdk/init.c
@@ -246,7 +246,7 @@ spdk_build_eal_cmdline(const struct spdk_env_opts *opts)
 	}
 
 	/* set the memory size */
-	if (opts->mem_size > 0) {
+	if (opts->mem_size >= 0) {
 		args = spdk_push_arg(args, &argcount, _sprintf_alloc("-m %d", opts->mem_size));
 		if (args == NULL) {
 			return -1;