linux-kernel - Re: [PATCH 0/2] PCI: pci_unignore_hotplug()

Open Source and information security mailing list archives

Message-ID: <CADnq5_PDjww+TkPWVV7HLLA50az2n20SfD5ShVp+OpT8Cy4Dew@mail.gmail.com>
Date:	Tue, 24 Feb 2015 15:23:27 -0500
From:	Alex Deucher <alexdeucher@...il.com>
To:	Alex Williamson <alex.williamson@...hat.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Dave Airlie <airlied@...ux.ie>,
	"Deucher, Alexander" <alexander.deucher@....com>,
	Maling list - DRI developers 
	<dri-devel@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] PCI: pci_unignore_hotplug()

On Tue, Feb 24, 2015 at 3:12 PM, Alex Williamson
<alex.williamson@...hat.com> wrote:
> I'd kinda like to use pci_ignore_hotplug() for devices in use by a
> user via vfio-pci, but the interface seems only partially implemented
> since we can only set ignore_hotplug and not clear it.  This adds the
> capability to clear the flag and applies it as seems to be appropriate
> to the existing users.  I don't have a system with power control for
> a radeon or nouveau device, so I'd certainly appreciate testing.  It
> seems though that once the device is in D0, we've passed the critical
> point where the device could be accidentally unplugged.  Thanks,

Something re-broke this recently.  See:
https://bugzilla.kernel.org/show_bug.cgi?id=61891
https://bugzilla.kernel.org/show_bug.cgi?id=89731

Alex

>
> Alex
>
> ---
>
> Alex Williamson (2):
>       pci: Add reciprocal function for pci_ignore_hotplug()
>       nouveau/radeon: Un-ignore hotplug on resume
>
>
>  drivers/gpu/drm/nouveau/nouveau_drm.c |    1 +
>  drivers/gpu/drm/radeon/radeon_drv.c   |    1 +
>  include/linux/pci.h                   |    5 +++++
>  3 files changed, 7 insertions(+)
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
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