This makes it possible to run DPDK without hugepage memory when VFIO is used, as VFIO uses virtual addresses to set up DMA mappings.
Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com<http://dpdk.org/ml/listinfo/dev>> Test-by: HuilongX Xu huilongx.xu at intel.com<mailto:huilongx.xu at intel.com> Compile pass >>Compile OS: FC20 x86_64 >>Kernel version: 3.13.6-200 >>GCC version: 4.8.2 >>Server: Crownpass --- lib/librte_eal/linuxapp/eal/eal_memory.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c index 5a10a80..3fc0d28 100644 --- a/lib/librte_eal/linuxapp/eal/eal_memory.c +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c @@ -1031,7 +1031,13 @@ rte_eal_hugepage_init(void) /* hugetlbfs can be disabled */ if (internal_config.no_hugetlbfs) { - addr = malloc(internal_config.memory); + addr = mmap(NULL, internal_config.memory, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); + if (addr == MAP_FAILED) { + RTE_LOG(ERR, EAL, "%s: mmap() failed: %s\n", __func__, + strerror(errno)); + return -1; + } mcfg->memseg[0].phys_addr = (phys_addr_t)(uintptr_t)addr; mcfg->memseg[0].addr = addr; mcfg->memseg[0].len = internal_config.memory; -- 1.7.0.7
