linux-kernel - Re: [dpdk-dev] [PATCH 0/2] uio

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Message-ID: <560D11F6.2080609@scylladb.com>
Date:	Thu, 1 Oct 2015 13:59:02 +0300
From:	Avi Kivity <avi@...lladb.com>
To:	Stephen Hemminger <stephen@...workplumber.org>, hjk@...sjkoch.de,
	gregkh@...ux-foundation.org
Cc:	dev@...k.org, linux-kernel@...r.kernel.org
Subject: Re: [dpdk-dev] [PATCH 0/2] uio_msi: device driver

On 10/01/2015 01:28 AM, Stephen Hemminger wrote:
> This is a new UIO device driver to allow supporting MSI-X and MSI devices
> in userspace.  It has been used in environments like VMware and older versions
> of QEMU/KVM where no IOMMU support is available.

Why not add msi/msix support to uio_pci_generic?

> Stephen Hemminger (2):
>
> *** BLURB HERE ***
>
> Stephen Hemminger (2):
>    uio: add support for ioctls
>    uio: new driver to support PCI MSI-X
>
>   drivers/uio/Kconfig          |   9 ++
>   drivers/uio/Makefile         |   1 +
>   drivers/uio/uio.c            |  15 ++
>   drivers/uio/uio_msi.c        | 378 +++++++++++++++++++++++++++++++++++++++++++
>   include/linux/uio_driver.h   |   3 +
>   include/uapi/linux/Kbuild    |   1 +
>   include/uapi/linux/uio_msi.h |  22 +++
>   7 files changed, 429 insertions(+)
>   create mode 100644 drivers/uio/uio_msi.c
>   create mode 100644 include/uapi/linux/uio_msi.h
>

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