From: Santosh Shukla <sshukla@mvista.com>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3 09/12] virtio: vfio: Enable RTE_PCI_DRV_NEED_MAPPING flag in driver
Date: Wed, 13 Jan 2016 17:48:47 +0530 [thread overview]
Message-ID: <CAAyOgsbBm=YVcuk8BAVmQ-C-Gg_ggu1ju4X9Xw++c8V9KVZn0Q@mail.gmail.com> (raw)
In-Reply-To: <20160112071417.GO26062@yliu-dev.sh.intel.com>
On Tue, Jan 12, 2016 at 12:44 PM, Yuanhan Liu
<yuanhan.liu@linux.intel.com> wrote:
> On Sat, Jan 09, 2016 at 06:08:46PM +0530, Santosh Shukla wrote:
>> On Thu, Jan 7, 2016 at 11:50 PM, Stephen Hemminger
>> <stephen@networkplumber.org> wrote:
>> > On Thu, 7 Jan 2016 22:03:06 +0530
>> > Santosh Shukla <sshukla@mvista.com> wrote:
>> >
>> >> +#ifdef RTE_EAL_VFIO
>> >> + .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_DETACHABLE,
>> >> +#else
>> >> .drv_flags = RTE_PCI_DRV_DETACHABLE,
>> >> +#endif
>> >
>> > Since VFIO is determined at runtime not compile time, the flags should
>> > be updated at runtime not compile time.
>> >
>> >
>> In general, Yes, Its a wrong approach i..e. Wrapping __need_mapping
>> flag only for vfio case. I am thinking to add vfio parser routine
>> something similar to virtio_xxx_xx_uio_xx() / virtio_xx_xx_ioport()
>> currently exist. This will remove RTE_EAL_VFIO ifdef clutter for this
>> patch and [08/12] patch and also virtio pmd driver can then initialize
>> device for vfio mode..
>>
>> _but_ I still need _MAPPING flag enabled for in virtio driver as
>> because for vfio case - I want vfio_xx_mmap() routine to create vfio
>> container/group_id and then create vfio_dev_fd for each virtio-net-pci
>> interface.
>
> I'm thinking my following patch will help:
>
> http://dpdk.org/dev/patchwork/patch/9814/
>
Yes, It works, so wont need NEED_MAPPING flag, Sending v4 patch series
rebased on this patch..
> --yliu
>
>> Let me know my approach aligned to your suggestion.
next prev parent reply other threads:[~2016-01-13 12:18 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-07 16:32 [dpdk-dev] [PATCH v3 00/12] Add virtio support for arm/arm64 Santosh Shukla
2016-01-07 16:32 ` [dpdk-dev] [PATCH v3 01/12] virtio: Introduce config RTE_VIRTIO_INC_VECTOR Santosh Shukla
2016-01-07 16:32 ` [dpdk-dev] [PATCH v3 02/12] config: i686: set RTE_VIRTIO_INC_VECTOR=n Santosh Shukla
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 03/12] linuxapp: eal: arm: Always return 0 for rte_eal_iopl_init() Santosh Shukla
2016-01-07 18:14 ` Stephen Hemminger
2016-01-09 13:18 ` Santosh Shukla
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 04/12] linuxapp/vfio: ignore mapping for ioport region Santosh Shukla
2016-01-07 18:16 ` Stephen Hemminger
2016-01-07 18:53 ` Santosh Shukla
2016-01-08 7:29 ` Yuanhan Liu
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 05/12] virtio_pci.h: build fix for sys/io.h for non-x86 arch Santosh Shukla
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 06/12] eal: pci: vfio: add rd/wr func for pci bar space Santosh Shukla
2016-01-07 18:19 ` Stephen Hemminger
2016-01-07 18:26 ` Wiles, Keith
2016-01-07 18:39 ` Stephen Hemminger
2016-01-07 18:48 ` Santosh Shukla
2016-01-07 18:46 ` Santosh Shukla
2016-01-13 14:47 ` Bruce Richardson
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 07/12] virtio: vfio: add api support to rd/wr ioport bar Santosh Shukla
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 08/12] virtio: Add capability to initialize driver for vfio interface Santosh Shukla
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 09/12] virtio: vfio: Enable RTE_PCI_DRV_NEED_MAPPING flag in driver Santosh Shukla
2016-01-07 18:20 ` Stephen Hemminger
2016-01-09 12:38 ` Santosh Shukla
2016-01-12 7:14 ` Yuanhan Liu
2016-01-13 12:18 ` Santosh Shukla [this message]
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 10/12] config: armv7/v8: Enable RTE_LIBRTE_VIRTIO_PMD Santosh Shukla
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 11/12] vfio: Support for no-IOMMU mode Santosh Shukla
2016-01-07 16:33 ` [dpdk-dev] [PATCH v3 12/12] eal: pci: vfio: fix build error Santosh Shukla
2016-01-07 17:02 ` Burakov, Anatoly
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