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From: Olivier Matz <olivier.matz@6wind.com>
To: dev@dpdk.org
Cc: bruce.richardson@intel.com, stephen@networkplumber.org,
keith.wiles@intel.com
Date: Wed, 18 May 2016 13:04:42 +0200
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Subject: [dpdk-dev] [PATCH v3 21/35] eal: lock memory when not using
hugepages
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Although the physical address won't be correct in memory segment,
this allows at least to retrieve the physical address using
rte_mem_virt2phy(). Indeed, if the page is not locked, the page
may not be present in physical memory.
With next commit, it allows a mempool to have properly filled physical
addresses when using --no-huge option.
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
lib/librte_eal/linuxapp/eal/eal_memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5b9132c..79d1d2d 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -1074,7 +1074,7 @@ rte_eal_hugepage_init(void)
/* hugetlbfs can be disabled */
if (internal_config.no_hugetlbfs) {
addr = mmap(NULL, internal_config.memory, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+ MAP_LOCKED | MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
if (addr == MAP_FAILED) {
RTE_LOG(ERR, EAL, "%s: mmap() failed: %s\n", __func__,
strerror(errno));
--
2.8.0.rc3