DPDK-dev Archive on lore.kernel.org
 help / color / Atom feed
From: Gagandeep Singh <g.singh@nxp.com>
To: dev@dpdk.org, thomas@monjalon.net
Cc: anatoly.burakov@intel.com, olivier.matz@6wind.com,
	arybchenko@solarflare.com, Gagandeep Singh <g.singh@nxp.com>,
	stable@dpdk.org, Nipun Gupta <nipun.gupta@nxp.com>
Subject: [dpdk-dev] [PATCH v2] eal: change max hugepage sizes to 4 for ARM platforms
Date: Thu,  8 Aug 2019 17:43:20 +0530
Message-ID: <20190808121320.12253-1-g.singh@nxp.com> (raw)
In-Reply-To: <20190807101204.21614-1-g.singh@nxp.com>

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: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Nipun Gupta <nipun.gupta@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


  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-07 10:12 [dpdk-dev] [PATCH] eal: change max hugepage sizes to 4 Gagandeep Singh
2019-08-07 12:00 ` David Marchand
2019-08-07 12:07   ` Thomas Monjalon
2019-08-07 13:28     ` Hemant Agrawal
2019-08-08  7:31       ` Thomas Monjalon
2019-08-12  9:43         ` Burakov, Anatoly
2019-08-12  9:49           ` David Marchand
2019-08-12 10:01             ` Thomas Monjalon
2019-08-12 10:38             ` Burakov, Anatoly
2019-08-08  7:33       ` David Marchand
2019-08-08  9:00         ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-08-08 10:37         ` [dpdk-dev] " Hemant Agrawal
2019-08-08 12:29           ` Steve Capper
2019-08-08 12:39             ` David Marchand
2019-08-12  9:42       ` Burakov, Anatoly
2019-08-07 15:27 ` Stephen Hemminger
2019-08-08 12:13 ` Gagandeep Singh [this message]
2019-08-08 12:37   ` [dpdk-dev] [dpdk-stable] [PATCH v2] eal: change max hugepage sizes to 4 for ARM platforms David Marchand
2019-08-08 15:26     ` Thomas Monjalon

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190808121320.12253-1-g.singh@nxp.com \
    --to=g.singh@nxp.com \
    --cc=anatoly.burakov@intel.com \
    --cc=arybchenko@solarflare.com \
    --cc=dev@dpdk.org \
    --cc=nipun.gupta@nxp.com \
    --cc=olivier.matz@6wind.com \
    --cc=stable@dpdk.org \
    --cc=thomas@monjalon.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK-dev Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/dpdk-dev/0 dpdk-dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dpdk-dev dpdk-dev/ https://lore.kernel.org/dpdk-dev \
		dev@dpdk.org
	public-inbox-index dpdk-dev

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git