From: Alex Williamson <alex.williamson@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Marcelo Tosatti <mtosatti@redhat.com>, kvm <kvm@vger.kernel.org>
Subject: Re: [RFC][PATCH] pci-assign: Drop support for raw ioport access
Date: Tue, 29 May 2012 07:47:59 -0600 [thread overview]
Message-ID: <1338299279.4714.98.camel@ul30vt> (raw)
In-Reply-To: <4FC49647.2020805@redhat.com>
On Tue, 2012-05-29 at 12:26 +0300, Avi Kivity wrote:
> On 05/29/2012 10:47 AM, Jan Kiszka wrote:
> >
> >>
> >> Under what conditions would the kernel not support ioport access via sysfs?
> >>
> >
> > No clue. The oldest kernel I checked (2.6.16) does not contain traces it
> > would refuse to provide access.
>
> I guess this was added first, and sysfs support was added later
> (9ed83e8eb18b0). Alex, any idea what kernels would fail this?
It's more recent than that. 8633328b is where we added pci-sysfs ioport
access, so 2.6.35 would be the first kernel with it. I don't really
know how this ever worked except for a very limited range of io ports
addresses before the sysfs access went in, so I'm ok with removing it.
Thanks,
Alex
next prev parent reply other threads:[~2012-05-29 13:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-28 13:03 [RFC][PATCH] pci-assign: Drop support for raw ioport access Jan Kiszka
2012-05-28 14:06 ` Avi Kivity
2012-05-29 7:47 ` Jan Kiszka
2012-05-29 9:26 ` Avi Kivity
2012-05-29 13:47 ` Alex Williamson [this message]
2012-05-29 14:00 ` Avi Kivity
2012-05-29 9:23 ` [PATCH] qemu-kvm: " Jan Kiszka
2012-05-29 13:51 ` [RFC][PATCH] pci-assign: " Alex Williamson
2012-05-29 14:41 ` Alex Williamson
2012-05-29 15:45 ` Jan Kiszka
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