ARM is supporting maximum 4 hugepage sizes (64K, 2M, 32M and 1G) when granule is 4KB since very long and DPDK support maximum 3 hugepage sizes.
With all 4 hugepage sizes enabled, applications and some stacks like VPP which are working over DPDK and using "in-memory" eal option, or using separate mount points on ARM based platform, fails at huge page initialization, reporting error messages from eal: EAL: FATAL: Cannot get hugepage information. EAL: Cannot get hugepage information. EAL: Error - exiting with code: 1 This issue is visible on kernel 5.2 (stable rel), where kernel is by default creating directories for each supported hugepage size in /sys/kernel/mm/hugepages/ On earlier Stable Kernel LTR's, the directories visible in /sys/kernel/mm/hugepages/ were dependent upon what hugepage sizes are configured at boot time. This change increases the maximum supported mount points to 4 for ARM based platforms. Cc: sta...@dpdk.org Signed-off-by: Gagandeep Singh <g.si...@nxp.com> Signed-off-by: Nipun Gupta <nipun.gu...@nxp.com> --- Changes in V2: - restricted this change specific to ARM - commit message updated - stable added to cc lib/librte_eal/common/eal_internal_cfg.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h index edff09d07..a42f34923 100644 --- a/lib/librte_eal/common/eal_internal_cfg.h +++ b/lib/librte_eal/common/eal_internal_cfg.h @@ -15,7 +15,11 @@ #include "eal_thread.h" +#if defined(RTE_ARCH_ARM) || defined(RTE_ARCH_ARM64) +#define MAX_HUGEPAGE_SIZES 4 /**< support up to 4 page sizes */ +#else #define MAX_HUGEPAGE_SIZES 3 /**< support up to 3 page sizes */ +#endif /* * internal configuration structure for the number, size and -- 2.17.1
