From mboxrd@z Thu Jan  1 00:00:00 1970
From: will.deacon@arm.com (Will Deacon)
Date: Fri, 27 Sep 2013 11:09:02 +0100
Subject: [PATCH 8/9] iommu/arm-smmu: Introduce a default fault handler
In-Reply-To: <1380234982-1677-9-git-send-email-andreas.herrmann@calxeda.com>
References: <1380234982-1677-1-git-send-email-andreas.herrmann@calxeda.com>
 <1380234982-1677-9-git-send-email-andreas.herrmann@calxeda.com>
Message-ID: <20130927100902.GD9057@mudshark.cambridge.arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Thu, Sep 26, 2013 at 11:36:20PM +0100, Andreas Herrmann wrote:
> And register the default handler for domains that are created during
> device isolation.
> 
> Signed-off-by: Andreas Herrmann <andreas.herrmann@calxeda.com>
> ---
>  drivers/iommu/arm-smmu.c |   10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
> index 48f3bfb..380c2a0 100644
> --- a/drivers/iommu/arm-smmu.c
> +++ b/drivers/iommu/arm-smmu.c
> @@ -1816,6 +1816,13 @@ static int arm_smmu_device_cfg_probe(struct arm_smmu_device *smmu)
>  	return 0;
>  }
>  
> +static int arm_smmu_context_fault_handler(struct iommu_domain *domain,
> +		struct device *dev, unsigned long iova, int flags, void *arg)
> +{
> +	dev_warn(dev, "context fault: iova=0x%08lx, flags=0x%x\n", iova, flags);
> +	return 0;

Maybe we're better off sandwiching this into arm_smmu_context_fault when
report_iommu_fault doesn't handle the fault.

Will