From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anatoly Burakov Subject: [PATCH v2 25/41] eal: map/unmap memory with VFIO when alloc/free pages Date: Wed, 7 Mar 2018 16:56:53 +0000 Message-ID: <282d80c42bd35814ee0f237c580ee8ef64ef36a2.1520428025.git.anatoly.burakov@intel.com> References: 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 To: dev@dpdk.org Return-path: Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id A4D6BAA9E for ; Wed, 7 Mar 2018 17:57:29 +0100 (CET) In-Reply-To: In-Reply-To: References: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Anatoly Burakov --- 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 #include #include +#include #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