linux-kernel - Re: [PATCH 0/2] pci-hyperv: Some miscellaneous fixes

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Date:   Tue, 4 Apr 2017 15:39:29 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     KY Srinivasan <kys@...rosoft.com>
Cc:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "olaf@...fle.de" <olaf@...fle.de>,
        "apw@...onical.com" <apw@...onical.com>,
        "vkuznets@...hat.com" <vkuznets@...hat.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "leann.ogasawara@...onical.com" <leann.ogasawara@...onical.com>,
        "marcelo.cerri@...onical.com" <marcelo.cerri@...onical.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>
Subject: Re: [PATCH 0/2] pci-hyperv: Some miscellaneous fixes

On Tue, Apr 04, 2017 at 07:54:33PM +0000, KY Srinivasan wrote:
> > -----Original Message-----
> > From: Bjorn Helgaas [mailto:helgaas@...nel.org]
> > Sent: Tuesday, April 4, 2017 12:04 PM
> > To: KY Srinivasan <kys@...rosoft.com>
> > Cc: linux-pci@...r.kernel.org; linux-kernel@...r.kernel.org;
> > devel@...uxdriverproject.org; olaf@...fle.de; apw@...onical.com;
> > vkuznets@...hat.com; jasowang@...hat.com;
> > leann.ogasawara@...onical.com; marcelo.cerri@...onical.com; Stephen
> > Hemminger <sthemmin@...rosoft.com>
> > Subject: Re: [PATCH 0/2] pci-hyperv: Some miscellaneous fixes
> > 
> > On Fri, Mar 24, 2017 at 11:06:40AM -0700, kys@...hange.microsoft.com
> > wrote:
> > > From: K. Y. Srinivasan <kys@...rosoft.com>
> > >
> > > Some miscellaneous fixes.
> > >
> > > K. Y. Srinivasan (2):
> > >   pci-hyperv: Fix a bug in specifying CPU affinity
> > >   pci-hyperv: Fix an atomic bug
> > >
> > >  drivers/pci/host/pci-hyperv.c |   13 +++++++++----
> > >  1 files changed, 9 insertions(+), 4 deletions(-)
> > 
> > I applied these with Long's reviewed-by to pci/host-hv for v4.12 with the
> > following subject lines:
> > 
> >   PCI: hv: Specify CPU_AFFINITY_ALL for MSI affinity when >= 32 CPUs
> >   PCI: hv: Allocate interrupt descriptors with GFP_ATOMIC
> > 
> Thank you.
> 
> > There were two copies of [1/2], which makes this error-prone.  I applied
> > the second one that defines CPU_AFFINITY_ALL.
> 
> Thanks again; sorry for the confusion.
> 
> > 
> > They're both marked for stable, but without any clue about when the
> > problems were introduced or how serious they are, I did not queue them for
> > v4.11.  If you want them in v4.11, please supply those additional details.
> 
> I think these issues have been there since   the driver got merged upstream.
> I would want this to be applied against 4.11 as well. Let me know if I should resend
> these patches.

No need to resend, but I do need more details about what issues these fix
and why they're more urgent than garden-variety bug fixes that are planned
for v4.12.  In general for-linus is for fixing problems we added during the
merge window, or other high-priority, low-risk changes.

Bjorn