From: Vlad Zolotarov <vladz@cloudius-systems.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
bruce.richardson@intel.com, linux-kernel@vger.kernel.org,
hjk@hansjkoch.de, avi@cloudius-systems.com, corbet@lwn.net,
alexander.duyck@gmail.com, gleb@cloudius-systems.com,
mst@redhat.com
Subject: Re: [PATCH v5 1/4] uio: add ioctl support
Date: Wed, 7 Oct 2015 22:00:58 +0300 [thread overview]
Message-ID: <56156BEA.4050809@cloudius-systems.com> (raw)
In-Reply-To: <CAOaVG17hMG7cAnD_DZ9J3pRMpXctx3o_EF8A62vtZx6Mv9c-2g@mail.gmail.com>
On 10/07/15 21:05, Stephen Hemminger wrote:
>
> Thinking more of a custom filesystem like configfs
>
Why would configfs be better?
I imagine the final files layout as follows: uioY device that would have
enabled MSI-X would have a separate uio/uioY/msix/irqZ for each IRQ[Z]
MSI-X vector.
And this under the same roof with uio/uioY/maps/mapK files.
We then need to implement the write() method for irqZ files so that it
would accept the eventfd and bind it (or unbind if the value is negative).
We may also make read() return not only the currently bond eventfd
descriptor but also the corresponding MSI-X IRQ number.
next prev parent reply other threads:[~2015-10-07 19:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-06 17:17 [PATCH v5 0/4] uio: add MSI/MSI-X support to uio_pci_generic driver Vlad Zolotarov
2015-10-06 17:17 ` [PATCH v5 1/4] uio: add ioctl support Vlad Zolotarov
2015-10-06 21:33 ` Stephen Hemminger
2015-10-07 8:17 ` Vlad Zolotarov
2015-10-07 8:18 ` Vlad Zolotarov
2015-10-07 8:46 ` Greg KH
2015-10-07 8:55 ` Vlad Zolotarov
2015-10-07 17:21 ` Greg KH
2015-10-07 17:28 ` Vlad Zolotarov
[not found] ` <CAOaVG17hMG7cAnD_DZ9J3pRMpXctx3o_EF8A62vtZx6Mv9c-2g@mail.gmail.com>
2015-10-07 19:00 ` Vlad Zolotarov [this message]
[not found] ` <CAOaVG147Fxq0VyohAFBvw4cxtLRw3qd2aNt-e2Vr4_R5EYs7zQ@mail.gmail.com>
2015-10-08 12:41 ` Vlad Zolotarov
2015-10-08 13:03 ` Greg Kroah-Hartman
2015-10-06 17:17 ` [PATCH v5 2/4] uio_pci_generic: properly initialize PCI bars mappings towards UIO Vlad Zolotarov
2015-10-06 17:17 ` [PATCH v5 3/4] uio_pci_generic: add MSI/MSI-X support Vlad Zolotarov
2015-10-06 21:36 ` Stephen Hemminger
2015-10-06 17:17 ` [PATCH v5 4/4] Documentation: update uio-howto Vlad Zolotarov
2015-10-06 18:27 ` [PATCH v5 0/4] uio: add MSI/MSI-X support to uio_pci_generic driver Michael S. Tsirkin
2015-10-06 20:35 ` Vlad Zolotarov
2015-10-06 20:48 ` Vlad Zolotarov
2015-10-06 22:51 ` Michael S. Tsirkin
2015-10-07 8:38 ` Vlad Zolotarov
2015-10-07 10:42 ` Michael S. Tsirkin
2015-10-07 13:44 ` Vlad Zolotarov
2015-10-07 13:55 ` Vlad Zolotarov
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