From: Tom Lyon <pugs@lyon-about.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/1] uio_pci_generic: extensions to allow access for non-privileged processes
Date: Thu, 1 Apr 2010 09:06:47 -0700 [thread overview]
Message-ID: <201004010906.47321.pugs@lyon-about.com> (raw)
In-Reply-To: <4BB4C1A6.8050904@redhat.com>
On Thursday 01 April 2010 08:54:14 am Avi Kivity wrote:
> On 04/01/2010 06:39 PM, Tom Lyon wrote:
> >>> - support for MSI and MSI-X interrupts (the intel 82599 VFs support
> >>> only MSI-X)
> >>
> >> How does a userspace program receive those interrupts?
> >
> > Same as other UIO drivers - by read()ing an event counter.
>
> IIRC the usual event counter is /dev/uioX, what's your event counter now?
Exact same mechanism.
>
> kvm really wants the event counter to be an eventfd, that allows hooking
> it directly to kvm (which can inject an interrupt on an eventfd_signal),
> can you adapt your patch to do this?
My patch does not currently go anywhere near the read/fd logic of /dev/uioX.
I think a separate patch would be appropriate.
next prev parent reply other threads:[~2010-04-01 16:09 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-01 0:08 [PATCH 0/1] uio_pci_generic: extensions to allow access for non-privileged processes Tom Lyon
2010-04-01 0:12 ` [PATCH 1/1] " Tom Lyon
2010-04-09 9:08 ` Joerg Roedel
2010-04-09 16:27 ` Tom Lyon
2010-04-01 9:09 ` [PATCH 0/1] " Avi Kivity
2010-04-01 15:39 ` Tom Lyon
2010-04-01 15:54 ` Avi Kivity
2010-04-01 16:06 ` Tom Lyon [this message]
2010-04-01 16:10 ` Avi Kivity
2010-04-01 19:24 ` Tom Lyon
2010-04-01 20:21 ` Joerg Roedel
2010-04-02 6:43 ` Avi Kivity
2010-04-02 17:05 ` Greg KH
2010-04-09 9:58 ` Avi Kivity
2010-04-09 16:34 ` Tom Lyon
2010-04-09 16:48 ` [PATCH 0/1] uio_pci_generic: extensions to allow access for?non-privileged processes Joerg Roedel
2010-04-09 17:43 ` [PATCH 0/1] uio_pci_generic: extensions to allow access for non-privileged processes Avi Kivity
2010-04-09 20:09 ` [PATCH 0/1] uio_pci_generic: extensions to allow access for?non-privileged processes Chris Wright
2010-04-09 20:05 ` [PATCH 0/1] uio_pci_generic: extensions to allow access for non-privileged processes Chris Wright
2010-04-01 21:27 ` Tom Lyon
2010-04-02 6:44 ` Avi Kivity
2010-04-01 12:52 ` Joerg Roedel
2010-04-01 15:40 ` Tom Lyon
2010-04-01 16:07 ` Joerg Roedel
2010-04-01 19:18 ` Tom Lyon
2010-04-01 20:09 ` Joerg Roedel
2010-04-01 14:25 ` Michael S. Tsirkin
2010-04-01 16:02 ` Tom Lyon
2010-04-01 16:57 ` Joerg Roedel
2010-04-01 19:08 ` Hans J. Koch
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