From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 5C50E1B9BB; Fri, 14 Dec 2018 12:54:05 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Dec 2018 03:54:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,352,1539673200"; d="scan'208";a="259461168" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga004.jf.intel.com with ESMTP; 14 Dec 2018 03:54:02 -0800 Received: from sivswdev05.ir.intel.com (sivswdev05.ir.intel.com [10.243.17.64]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id wBEBs2Or005606; Fri, 14 Dec 2018 11:54:02 GMT Received: from sivswdev05.ir.intel.com (localhost [127.0.0.1]) by sivswdev05.ir.intel.com with ESMTP id wBEBs2Oo008778; Fri, 14 Dec 2018 11:54:02 GMT Received: (from aburakov@localhost) by sivswdev05.ir.intel.com with LOCAL id wBEBs1bM008774; Fri, 14 Dec 2018 11:54:02 GMT From: Anatoly Burakov To: dev@dpdk.org Cc: yskoh@mellanox.com, shahafs@mellanox.com, stable@dpdk.org Date: Fri, 14 Dec 2018 11:54:01 +0000 Message-Id: <245b643cbfb5f3a0f96e44603339e20278b34e76.1544788410.git.anatoly.burakov@intel.com> X-Mailer: git-send-email 1.7.0.7 Subject: [dpdk-dev] [PATCH] malloc: make alignment requirements more stringent X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Dec 2018 11:54:05 -0000 The external heaps API already implicitly expects start address of the external memory area to be page-aligned, but it is not enforced or documented. Fix this by implementing additional parameter checks at memory add call, and document the page alignment requirement explicitly. Fixes: 7d75c31014f7 ("malloc: allow adding memory to named heaps") Cc: stable@dpdk.org Signed-off-by: Anatoly Burakov Suggested-by: Yongseok Koh --- lib/librte_eal/common/include/rte_malloc.h | 4 ++-- lib/librte_eal/common/rte_malloc.c | 8 +++----- 2 files changed, 5 insertions(+), 7 deletions(-) diff --git a/lib/librte_eal/common/include/rte_malloc.h b/lib/librte_eal/common/include/rte_malloc.h index 7249e6aae..a5290b074 100644 --- a/lib/librte_eal/common/include/rte_malloc.h +++ b/lib/librte_eal/common/include/rte_malloc.h @@ -282,9 +282,9 @@ rte_malloc_get_socket_stats(int socket, * @param heap_name * Name of the heap to add memory chunk to * @param va_addr - * Start of virtual area to add to the heap + * Start of virtual area to add to the heap. Must be aligned by ``page_sz``. * @param len - * Length of virtual area to add to the heap + * Length of virtual area to add to the heap. Must be aligned by ``page_sz``. * @param iova_addrs * Array of page IOVA addresses corresponding to each page in this memory * area. Can be NULL, in which case page IOVA addresses will be set to diff --git a/lib/librte_eal/common/rte_malloc.c b/lib/librte_eal/common/rte_malloc.c index 0da5ad5e8..46abbfcf6 100644 --- a/lib/librte_eal/common/rte_malloc.c +++ b/lib/librte_eal/common/rte_malloc.c @@ -345,6 +345,9 @@ rte_malloc_heap_memory_add(const char *heap_name, void *va_addr, size_t len, if (heap_name == NULL || va_addr == NULL || page_sz == 0 || !rte_is_power_of_2(page_sz) || + RTE_ALIGN(len, page_sz) != len || + !rte_is_aligned(va_addr, page_sz) || + ((len / page_sz) != n_pages && iova_addrs != NULL) || strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == 0 || strnlen(heap_name, RTE_HEAP_NAME_MAX_LEN) == RTE_HEAP_NAME_MAX_LEN) { @@ -367,11 +370,6 @@ rte_malloc_heap_memory_add(const char *heap_name, void *va_addr, size_t len, goto unlock; } n = len / page_sz; - if (n != n_pages && iova_addrs != NULL) { - rte_errno = EINVAL; - ret = -1; - goto unlock; - } rte_spinlock_lock(&heap->lock); ret = malloc_heap_add_external_memory(heap, va_addr, iova_addrs, n, -- 2.17.1