From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Ellerman <patch-notifications@ellerman.id.au>
Date: Sun, 23 Dec 2018 13:28:17 +0000
Subject: Re: [RFC,kernel] vfio/spapr_tce: Get rid of possible infinite loop
Message-Id: <43N38f2dkcz9sPG@ozlabs.org>
List-Id: <kvm-ppc.vger.kernel.org>
In-Reply-To: <20181002032231.7494-1-aik@ozlabs.ru>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: Alexey Kardashevskiy <aik@ozlabs.ru>, linuxppc-dev@lists.ozlabs.org
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>, Alex Williamson <alex.williamson@redhat.com>, kvm-ppc@vger.kernel.org, David Gibson <david@gibson.dropbear.id.au>

On Tue, 2018-10-02 at 03:22:31 UTC, Alexey Kardashevskiy wrote:
> As a part of cleanup, the SPAPR TCE IOMMU subdriver releases preregistered
> memory. If there is a bug in memory release, the loop in
> tce_iommu_release() becomes infinite; this actually happened to me.
> 
> This makes the loop finite and prints a warning on every failure to make
> the code more bug prone.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> Acked-by: Alex Williamson <alex.williamson@redhat.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/517ad4ae8aa93dccdb9a88c27257ec

cheers