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From: "Guy Levi(SW)" <guyle@mellanox.com>
To: Jason Gunthorpe <jgg@mellanox.com>,
	Leon Romanovsky <leon@kernel.org>,
	Moni Shoua <monis@mellanox.com>
Cc: Doug Ledford <dledford@redhat.com>,
	Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Ido Kalir <idok@mellanox.com>, Majd Dibbiny <majd@mellanox.com>,
	Mark Zhang <markz@mellanox.com>
Subject: RE: [PATCH rdma-rc 0/8] Fixes for v5.3
Date: Thu, 15 Aug 2019 20:26:19 +0000
Message-ID: <AM0PR05MB53310C7255ABD0333FA3387AC7AC0@AM0PR05MB5331.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20190815192940.GS21596@ziepe.ca>



> -----Original Message-----
> From: Jason Gunthorpe <jgg@mellanox.com>
> Sent: Thursday, August 15, 2019 10:30 PM
> To: Leon Romanovsky <leon@kernel.org>; Moni Shoua
> <monis@mellanox.com>
> Cc: Doug Ledford <dledford@redhat.com>; Leon Romanovsky
> <leonro@mellanox.com>; RDMA mailing list <linux-rdma@vger.kernel.org>;
> Guy Levi(SW) <guyle@mellanox.com>; Ido Kalir <idok@mellanox.com>; Majd
> Dibbiny <majd@mellanox.com>; Mark Zhang <markz@mellanox.com>
> Subject: Re: [PATCH rdma-rc 0/8] Fixes for v5.3
> 
> On Thu, Aug 15, 2019 at 11:38:26AM +0300, Leon Romanovsky wrote:
> > From: Leon Romanovsky <leonro@mellanox.com>
> >
> > Hi,
> >
> > This is a collection of new fixes for v5.3, everything here is fixing
> > kernel crash or visible bug with one exception: patch #5 "IB/mlx5:
> > Consolidate use_umr checks into single function". That patch is nice
> > to have improvement to implement rest of the series.
> >
> > Thanks
> >
> > Ido Kalir (1):
> >   IB/core: Fix NULL pointer dereference when bind QP to counter
> >
> > Jason Gunthorpe (1):
> >   RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB
> >
> > Leon Romanovsky (2):
> >   RDMA/counters: Properly implement PID checks
> >   RDMA/restrack: Rewrite PID namespace check to be reliable
> >
> > Moni Shoua (4):
> >   IB/mlx5: Consolidate use_umr checks into single function
> >   IB/mlx5: Report and handle ODP support properly
> >   IB/mlx5: Fix MR re-registration flow to use UMR properly
> >   IB/mlx5: Block MR WR if UMR is not possible
> 
> I'm a little murky on what thes are fixing? Moni?

See original fixed patch.
Sometime the HW device disables some UMR abilities and hence driver should avoid UMR usage in some cases. This HW behavior can be seen today in Linux@windows environment with "untrusted VF".

> 
> Jason

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-15  8:38 Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 1/8] IB/core: Fix NULL pointer dereference when bind QP to counter Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 2/8] RDMA/counters: Properly implement PID checks Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 3/8] RDMA/restrack: Rewrite PID namespace check to be reliable Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 4/8] RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 5/8] IB/mlx5: Consolidate use_umr checks into single function Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 6/8] IB/mlx5: Report and handle ODP support properly Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 7/8] IB/mlx5: Fix MR re-registration flow to use UMR properly Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 8/8] IB/mlx5: Block MR WR if UMR is not possible Leon Romanovsky
2019-08-15 19:29 ` [PATCH rdma-rc 0/8] Fixes for v5.3 Jason Gunthorpe
2019-08-15 20:26   ` Guy Levi(SW) [this message]
2019-08-20 16:56 ` Doug Ledford
2019-08-20 17:38   ` Jason Gunthorpe
2019-08-20 17:47     ` Doug Ledford

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