From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <aburakov@ecsmtp.ir.intel.com>
Received: from mga18.intel.com (mga18.intel.com [134.134.136.126])
by dpdk.org (Postfix) with ESMTP id A4D6BAA9E
for <dev@dpdk.org>; Wed, 7 Mar 2018 17:57:29 +0100 (CET)
X-Amp-Result: SKIPPED(no attachment in message)
X-Amp-File-Uploaded: False
Received: from orsmga001.jf.intel.com ([10.7.209.18])
by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;
07 Mar 2018 08:57:17 -0800
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.47,436,1515484800"; d="scan'208";a="36737801"
Received: from irvmail001.ir.intel.com ([163.33.26.43])
by orsmga001.jf.intel.com with ESMTP; 07 Mar 2018 08:57:13 -0800
Received: from sivswdev01.ir.intel.com (sivswdev01.ir.intel.com
[10.237.217.45])
by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id
w27GvDcA032419; Wed, 7 Mar 2018 16:57:13 GMT
Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1])
by sivswdev01.ir.intel.com with ESMTP id w27GvDsu006797;
Wed, 7 Mar 2018 16:57:13 GMT
Received: (from aburakov@localhost)
by sivswdev01.ir.intel.com with LOCAL id w27GvDvK006793;
Wed, 7 Mar 2018 16:57:13 GMT
From: Anatoly Burakov <anatoly.burakov@intel.com>
To: dev@dpdk.org
Cc: keith.wiles@intel.com, jianfeng.tan@intel.com, andras.kovacs@ericsson.com,
laszlo.vadkeri@ericsson.com, benjamin.walker@intel.com,
bruce.richardson@intel.com, thomas@monjalon.net,
konstantin.ananyev@intel.com, kuralamudhan.ramakrishnan@intel.com,
louise.m.daly@intel.com, nelio.laranjeiro@6wind.com,
yskoh@mellanox.com, pepperjo@japf.ch, jerin.jacob@caviumnetworks.com,
hemant.agrawal@nxp.com, olivier.matz@6wind.com
Date: Wed, 7 Mar 2018 16:56:53 +0000
Message-Id: <282d80c42bd35814ee0f237c580ee8ef64ef36a2.1520428025.git.anatoly.burakov@intel.com>
X-Mailer: git-send-email 1.7.0.7
In-Reply-To: <cover.1520428025.git.anatoly.burakov@intel.com>
References: <cover.1520428025.git.anatoly.burakov@intel.com>
In-Reply-To: <cover.1520428025.git.anatoly.burakov@intel.com>
References: <cover.1520083504.git.anatoly.burakov@intel.com>
<cover.1520428025.git.anatoly.burakov@intel.com>
Subject: [dpdk-dev] [PATCH v2 25/41] eal: map/unmap memory with VFIO when
alloc/free pages
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://dpdk.org/ml/options/dev>,
<mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://dpdk.org/ml/listinfo/dev>,
<mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Wed, 07 Mar 2018 16:57:30 -0000
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
lib/librte_eal/linuxapp/eal/eal_memalloc.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/lib/librte_eal/linuxapp/eal/eal_memalloc.c b/lib/librte_eal/linuxapp/eal/eal_memalloc.c
index bbeeeba..c03e7bc 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memalloc.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memalloc.c
@@ -34,6 +34,7 @@
#include <rte_eal.h>
#include <rte_memory.h>
#include <rte_spinlock.h>
+#include <rte_vfio.h>
#include "eal_filesystem.h"
#include "eal_internal_cfg.h"
@@ -476,6 +477,10 @@ alloc_page(struct rte_memseg *ms, void *addr, uint64_t size, int socket_id,
ms->iova = iova;
ms->socket_id = socket_id;
+ /* map the segment so that VFIO has access to it */
+ if (rte_eal_iova_mode() == RTE_IOVA_VA &&
+ rte_vfio_dma_map(ms->addr_64, iova, size))
+ RTE_LOG(DEBUG, EAL, "Cannot register segment with VFIO\n");
return 0;
mapped:
@@ -507,6 +512,12 @@ free_page(struct rte_memseg *ms, struct hugepage_info *hi,
char path[PATH_MAX];
int fd, ret;
+ /* unmap the segment from VFIO */
+ if (rte_eal_iova_mode() == RTE_IOVA_VA &&
+ rte_vfio_dma_unmap(ms->addr_64, ms->iova, ms->len)) {
+ RTE_LOG(DEBUG, EAL, "Cannot unregister segment with VFIO\n");
+ }
+
if (mmap(ms->addr, ms->hugepage_sz, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0) ==
MAP_FAILED) {
--
2.7.4