From: Jason Gunthorpe <jgg@nvidia.com>
To: Halil Pasic <pasic@linux.ibm.com>
Cc: Tony Krowiak <akrowiak@linux.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
borntraeger@de.ibm.com, cohuck@redhat.com,
pasic@linux.vnet.ibm.com, jjherne@linux.ibm.com,
alex.williamson@redhat.com, kwankhede@nvidia.com,
frankja@linux.ibm.com, david@redhat.com, imbrenda@linux.ibm.com,
hca@linux.ibm.com
Subject: Re: [PATCH] s390/vfio-ap: do not open code locks for VFIO_GROUP_NOTIFY_SET_KVM notification
Date: Thu, 15 Jul 2021 11:57:21 -0300 [thread overview]
Message-ID: <20210715145721.GE543781@nvidia.com> (raw)
In-Reply-To: <20210715133136.420c40b0.pasic@linux.ibm.com>
On Thu, Jul 15, 2021 at 01:31:36PM +0200, Halil Pasic wrote:
> I'm in favor of rewriting this to use rw_semaphore. I'm not in favor
> of proclaiming this a fix for stable, because for that you first have
> to prove that you fix a real problem.
So Tony keeps saying that a rwsem couldn't work for what kvm_busy
does, so it should be trivial enough to put in the rwsem and capture
the lockdep spew.
> I hope we are on the same page.
Sure
Jason
next prev parent reply other threads:[~2021-07-15 14:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 15:41 [PATCH] s390/vfio-ap: do not open code locks for VFIO_GROUP_NOTIFY_SET_KVM notification Tony Krowiak
2021-07-12 13:42 ` Tony Krowiak
2021-07-12 23:38 ` Halil Pasic
2021-07-13 13:48 ` Tony Krowiak
2021-07-13 16:45 ` Halil Pasic
2021-07-13 17:05 ` Jason Gunthorpe
2021-07-13 19:04 ` Tony Krowiak
2021-07-13 19:21 ` Jason Gunthorpe
2021-07-14 13:25 ` Tony Krowiak
2021-07-14 17:56 ` Christian Borntraeger
2021-07-14 18:43 ` Jason Gunthorpe
2021-07-14 19:02 ` Alex Williamson
2021-07-15 11:31 ` Halil Pasic
2021-07-15 14:57 ` Jason Gunthorpe [this message]
2021-07-13 18:47 ` Tony Krowiak
2021-07-15 13:44 ` Halil Pasic
2021-07-15 14:38 ` Tony Krowiak
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