From: "Tan, Jianfeng" <jianfeng.tan@intel.com>
To: Tetsuya Mukawa <mukawa@igel.co.jp>,
dev@dpdk.org, yuanhan.liu@linux.intel.com
Subject: Re: [dpdk-dev] [RFC PATCH 4/5] EAL: Add new EAL "--shm" option.
Date: Fri, 22 Jan 2016 10:07:58 +0800 [thread overview]
Message-ID: <56A18EFE.5050600@intel.com> (raw)
In-Reply-To: <56A18958.7070202@intel.com>
Hi Tetsuya,
On 1/22/2016 9:43 AM, Tan, Jianfeng wrote:
> Hi Tetsuya,
>
> On 1/21/2016 7:07 PM, Tetsuya Mukawa wrote:
>> This is a temporary patch to get EAL memory under 16T(1 << 44).
>>
>> The patch adds new EAL "--shm" option. If the option is specified,
>> EAL will allocate one file from hugetlbfs. This memory is for sharing
>> memory between DPDK applicaiton and QEMU ivhsmem device.
>>
>> Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
>> ---
>> lib/librte_eal/common/eal_common_options.c | 5 ++
>> lib/librte_eal/common/eal_internal_cfg.h | 1 +
>> lib/librte_eal/common/eal_options.h | 2 +
>> lib/librte_eal/common/include/rte_memory.h | 5 ++
>> lib/librte_eal/linuxapp/eal/eal_memory.c | 76
>> ++++++++++++++++++++++++++++++
>> 5 files changed, 89 insertions(+)
>>
>
...
>> + vaddr = mmap((void *)(1ULL << 43), size, PROT_READ | PROT_WRITE,
>> + MAP_SHARED | MAP_FIXED, fd, 0);
>> + if (vaddr != MAP_FAILED) {
>> + memset(vaddr, 0, size);
>> + *pfd = fd;
>> + }
>
> I'm not sure if hard-coded way is good enough. It's known that kernel
> manages VMAs using red-black tree, but I don't know if kernel
> allocates VMA from low address to high address (if yes, can we
> leverage this feature?).
>
A little more:it seems that kernel uses arch_get_unmapped_area_topdown()
-> unmapped_area_topdown() to do that, which starts at
mm->highest_vm_end. If this value bigger than (1ULL << 44)?
Thanks,
Jianfeng
next prev parent reply other threads:[~2016-01-22 2:08 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-18 9:13 [dpdk-dev] [PATCH 0/3] virtio: Add a new layer to abstract pci access method Tetsuya Mukawa
2016-01-18 9:13 ` [dpdk-dev] [PATCH 1/3] virtio: Change the parameter order of io_write8/16/32() Tetsuya Mukawa
2016-01-21 11:07 ` [dpdk-dev] [RFC PATCH 0/5] virtio: Add a new layer to abstract pci access method Tetsuya Mukawa
2016-01-21 11:10 ` Tetsuya Mukawa
2016-01-21 11:07 ` [dpdk-dev] [RFC PATCH 1/5] virtio: Change the parameter order of io_write8/16/32() Tetsuya Mukawa
2016-01-21 11:07 ` [dpdk-dev] [RFC PATCH 2/5] virtio: move rte_eal_pci_unmap_device() to virtio_pci.c Tetsuya Mukawa
2016-01-21 11:07 ` [dpdk-dev] [RFC PATCH 3/5] virtio: Add a new layer to abstract pci access method Tetsuya Mukawa
2016-01-22 7:26 ` Xie, Huawei
2016-01-22 7:35 ` Tetsuya Mukawa
2016-01-21 11:07 ` [dpdk-dev] [RFC PATCH 4/5] EAL: Add new EAL "--shm" option Tetsuya Mukawa
2016-01-22 1:43 ` Tan, Jianfeng
2016-01-22 2:07 ` Tan, Jianfeng [this message]
2016-01-22 3:23 ` Tetsuya Mukawa
2016-01-21 11:07 ` [dpdk-dev] [RFC PATCH 5/5] virtio: Extend virtio-net PMD to support container environment Tetsuya Mukawa
2016-01-22 8:14 ` Xie, Huawei
2016-01-22 10:37 ` Tetsuya Mukawa
2016-01-25 10:15 ` Xie, Huawei
2016-01-26 2:58 ` Tetsuya Mukawa
2016-01-27 9:39 ` Xie, Huawei
2016-01-28 2:33 ` Tetsuya Mukawa
2016-01-25 10:17 ` Xie, Huawei
2016-01-26 2:58 ` Tetsuya Mukawa
2016-01-25 10:29 ` Xie, Huawei
2016-01-26 2:58 ` Tetsuya Mukawa
2016-01-27 10:03 ` Xie, Huawei
2016-01-28 2:44 ` Tetsuya Mukawa
2016-01-29 8:56 ` Xie, Huawei
2016-01-27 15:58 ` Xie, Huawei
2016-01-28 2:47 ` Tetsuya Mukawa
2016-01-28 9:48 ` Xie, Huawei
2016-01-28 9:53 ` Tetsuya Mukawa
2016-01-27 16:45 ` Xie, Huawei
2016-01-28 2:47 ` Tetsuya Mukawa
2016-01-28 6:15 ` Xie, Huawei
2016-01-28 6:29 ` Tetsuya Mukawa
2016-01-29 8:57 ` Yuanhan Liu
2016-01-29 9:13 ` Yuanhan Liu
2016-02-01 1:49 ` Tetsuya Mukawa
2016-02-10 3:40 ` [dpdk-dev] [PATCH v2 0/5] Virtio-net PMD: QEMU QTest extension for container Tetsuya Mukawa
2016-02-10 3:40 ` [dpdk-dev] [PATCH v2 1/5] virtio: Retrieve driver name from eth_dev Tetsuya Mukawa
2016-02-10 3:40 ` [dpdk-dev] [PATCH v2 2/5] EAL: Add new EAL "--qtest-virtio" option Tetsuya Mukawa
2016-02-15 7:52 ` Tan, Jianfeng
2016-02-16 1:32 ` Tetsuya Mukawa
2016-02-16 5:53 ` David Marchand
2016-02-16 11:36 ` Tan, Jianfeng
2016-02-17 3:36 ` Tetsuya Mukawa
2016-02-22 8:17 ` [dpdk-dev] [PATCH v3 0/6] Virtio-net PMD: QEMU QTest extension for container Tetsuya Mukawa
2016-02-22 8:17 ` [dpdk-dev] [PATCH v3 1/6] virtio: Retrieve driver name from eth_dev Tetsuya Mukawa
2016-02-22 8:17 ` [dpdk-dev] [PATCH v3 2/6] vhost: Add a function to check virtio device type Tetsuya Mukawa
2016-02-22 8:17 ` [dpdk-dev] [PATCH v3 3/6] EAL: Add new EAL "--range-virtaddr" option Tetsuya Mukawa
2016-03-04 2:20 ` Tan, Jianfeng
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 00/12] Virtio-net PMD: QEMU QTest extension for container Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 01/12] virtio: Retrieve driver name from eth_dev Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 02/12] vhost: Add a function to check virtio device type Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 03/12] EAL: Add a new "--range-virtaddr" option Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 04/12] EAL: Add a new "--align-memsize" option Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 05/12] virtio, qtest: Add QTest utility basic functions Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 06/12] virtio, qtest: Add pci device initialization function to qtest utils Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 07/12] virtio, qtest: Add functionality to share memory between QTest guest Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 08/12] virtio, qtest: Add functionality to handle interrupt Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 09/12] virtio, qtest: Add misc functions to handle pci information Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 10/12] virtio: Add QTest support to vtpci abstraction Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 11/12] virtio: Add QTest support for virtio-net PMD Tetsuya Mukawa
2016-06-02 3:29 ` [dpdk-dev] [PATCH v5 0/6] Virtio-net PMD: QEMU QTest extension for container Tetsuya Mukawa
2016-06-02 7:31 ` Yuanhan Liu
2016-06-02 9:30 ` Tetsuya Mukawa
2016-06-03 4:17 ` Yuanhan Liu
2016-06-03 13:51 ` Thomas Monjalon
2016-06-06 5:10 ` Tetsuya Mukawa
2016-06-06 7:21 ` Yuanhan Liu
2016-06-06 8:33 ` Tetsuya Mukawa
2016-06-06 8:49 ` Yuanhan Liu
2016-06-06 9:30 ` Tetsuya Mukawa
2016-06-06 9:58 ` Yuanhan Liu
2016-06-06 10:50 ` Tan, Jianfeng
2016-06-07 7:12 ` Tetsuya Mukawa
2016-06-07 7:33 ` Yuanhan Liu
2016-06-06 8:03 ` Tan, Jianfeng
2016-06-06 9:28 ` Tetsuya Mukawa
2016-06-06 10:35 ` Tan, Jianfeng
2016-06-02 3:29 ` [dpdk-dev] [PATCH v5 1/6] virtio, qtest: Add QTest utility basic functions Tetsuya Mukawa
2016-06-02 3:29 ` [dpdk-dev] [PATCH v5 2/6] virtio, qtest: Add pci device initialization function to qtest utils Tetsuya Mukawa
2016-06-02 3:29 ` [dpdk-dev] [PATCH v5 3/6] virtio, qtest: Add functionality to share memory between QTest guest Tetsuya Mukawa
2016-06-02 3:29 ` [dpdk-dev] [PATCH v5 4/6] virtio, qtest: Add misc functions to handle pci information Tetsuya Mukawa
2016-06-02 3:29 ` [dpdk-dev] [PATCH v5 5/6] virtio: Add QTest support to vtpci abstraction Tetsuya Mukawa
2016-06-02 3:29 ` [dpdk-dev] [PATCH v5 6/6] virtio: Add QTest support for virtio-net PMD Tetsuya Mukawa
2016-06-02 3:30 ` [dpdk-dev] [PATCH v1 0/2] Supplement patches for virtio-qtest to support LSC interrupt Tetsuya Mukawa
2016-06-02 3:30 ` [dpdk-dev] [PATCH v1 1/2] virtio: Handle interrupt things under vtpci abstraction Tetsuya Mukawa
2016-06-02 3:30 ` [dpdk-dev] [PATCH v1 2/2] virtio, qtest: Add functionality to handle interrupt Tetsuya Mukawa
2016-03-09 8:33 ` [dpdk-dev] [PATCH v4 12/12] docs: add release note for qtest virtio container support Tetsuya Mukawa
2016-02-22 8:17 ` [dpdk-dev] [PATCH v3 4/6] EAL: Add a new "--align-memsize" option Tetsuya Mukawa
2016-02-22 8:17 ` [dpdk-dev] [PATCH v3 5/6] virtio: Add support for qtest virtio-net PMD Tetsuya Mukawa
2016-03-04 2:18 ` Tan, Jianfeng
2016-03-04 5:05 ` Tetsuya Mukawa
2016-03-04 6:10 ` Tan, Jianfeng
2016-03-04 9:53 ` Tetsuya Mukawa
2016-02-22 8:17 ` [dpdk-dev] [PATCH v3 6/6] docs: add release note for qtest virtio container support Tetsuya Mukawa
2016-02-22 15:40 ` Mcnamara, John
2016-02-23 10:28 ` Mcnamara, John
2016-02-24 1:20 ` Tetsuya Mukawa
2016-02-10 3:40 ` [dpdk-dev] [PATCH v2 3/5] vhost: Add a function to check virtio device type Tetsuya Mukawa
2016-02-10 3:40 ` [dpdk-dev] [PATCH v2 4/5] virtio: Add support for qtest virtio-net PMD Tetsuya Mukawa
2016-02-10 3:40 ` [dpdk-dev] [PATCH v2 5/5] docs: add release note for qtest virtio container support Tetsuya Mukawa
2016-01-28 9:33 ` [dpdk-dev] [PATCH v2 0/3] virtio: Add a new layer to abstract pci access method Tetsuya Mukawa
2016-01-28 9:33 ` [dpdk-dev] [PATCH v2 1/3] virtio: Change the parameter order of io_write8/16/32() Tetsuya Mukawa
2016-01-28 9:33 ` [dpdk-dev] [PATCH v2 2/3] virtio: move rte_eal_pci_unmap_device() to virtio_pci.c Tetsuya Mukawa
2016-01-28 9:33 ` [dpdk-dev] [PATCH v2 3/3] virtio: Add a new layer to abstract pci access method Tetsuya Mukawa
2016-01-29 9:17 ` Yuanhan Liu
2016-02-01 1:50 ` Tetsuya Mukawa
2016-02-01 13:15 ` Yuanhan Liu
2016-02-02 2:19 ` Tetsuya Mukawa
2016-02-02 2:45 ` Yuanhan Liu
2016-02-02 3:55 ` Tetsuya Mukawa
2016-01-18 9:13 ` [dpdk-dev] [PATCH 2/3] virtio: move rte_eal_pci_unmap_device() to virtio_pci.c Tetsuya Mukawa
2016-01-18 9:13 ` [dpdk-dev] [PATCH 3/3] virtio: Add a new layer to abstract pci access method Tetsuya Mukawa
2016-01-18 13:46 ` Yuanhan Liu
2016-01-19 1:22 ` Tetsuya Mukawa
2016-01-19 2:41 ` Xie, Huawei
2016-01-18 13:13 ` [dpdk-dev] [PATCH 0/3] " Tan, Jianfeng
2016-01-19 1:22 ` Tetsuya Mukawa
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