From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Alejandro Lucero <alejandro.lucero@netronome.com>, dev@dpdk.org
Cc: stable@dpdk.org, maxime.coquelin@redhat.com
Subject: Re: [dpdk-stable] [PATCH 3/6] bus/pci: use IOVAs check when setting IOVA mode
Date: Tue, 3 Jul 2018 10:10:25 +0100 [thread overview]
Message-ID: <544f7536-9140-850a-8a01-7b6e15909ae4@intel.com> (raw)
In-Reply-To: <1530552423-32301-4-git-send-email-alejandro.lucero@netronome.com>
On 02-Jul-18 6:27 PM, Alejandro Lucero wrote:
> Although VT-d emulation currently only supports 39 bits, it could
> be iovas being within that supported range. This patch allows
> IOVA mode in such a case.
>
> Indeed, memory initialization code can be modified for using lower
> virtual addresses than those used by the kernel for 64 bits processes
> by default, and therefore memsegs iovas can use 39 bits or less for
> most system. And this is likely 100% true for VMs.
>
> Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
> ---
General question - is this issue only applicable to PCI? Do other buses
need this?
--
Thanks,
Anatoly
next prev parent reply other threads:[~2018-07-03 9:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-02 17:26 [dpdk-stable] [PATH 0/6] Use IOVAs check based on DMA mask Alejandro Lucero
2018-07-02 17:26 ` [dpdk-stable] [PATCH 1/6] mem: add function for checking memsegs IOVAs addresses Alejandro Lucero
2018-07-03 9:07 ` Burakov, Anatoly
2018-07-03 10:01 ` Alejandro Lucero
2018-07-02 17:26 ` [dpdk-stable] [PATCH 2/6] ethdev: add function for checking IOVAs by a device Alejandro Lucero
2018-07-02 17:27 ` [dpdk-stable] [PATCH 3/6] bus/pci: use IOVAs check when setting IOVA mode Alejandro Lucero
2018-07-03 9:10 ` Burakov, Anatoly [this message]
2018-07-03 10:08 ` Alejandro Lucero
2018-07-02 17:27 ` [dpdk-stable] [PATCH 4/6] mem: use address hint for mapping hugepages Alejandro Lucero
2018-07-03 9:17 ` Burakov, Anatoly
2018-07-03 10:44 ` Alejandro Lucero
2018-07-03 10:46 ` Burakov, Anatoly
2018-07-02 17:27 ` [dpdk-stable] [PATCH 5/6] net/nfp: check hugepages IOVAs based on DMA mask Alejandro Lucero
2018-07-02 17:27 ` [dpdk-stable] [PATCH 6/6] net/nfp: support IOVA VA mode Alejandro Lucero
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