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Date: Mon, 15 Sep 2014 10:20:49 +0800
From: Yijing Wang <wangyijing@huawei.com>
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To: Jiang Liu <jiang.liu@linux.intel.com>,
	Joerg Roedel <joro@8bytes.org>,
	David Woodhouse <dwmw2@infradead.org>,
	Yinghai Lu <yinghai@kernel.org>,
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CC: Ashok Raj <ashok.raj@intel.com>, Tony Luck <tony.luck@intel.com>,
	<iommu@lists.linux-foundation.org>, <linux-pci@vger.kernel.org>,
	<linux-hotplug@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<dmaengine@vger.kernel.org>
Subject: Re: [Patch Part3 V5 5/8] iommu/vt-d: Enhance intel_irq_remapping
 driver to support DMAR unit hotplug
References: <1410487848-6027-1-git-send-email-jiang.liu@linux.intel.com> <1410487848-6027-6-git-send-email-jiang.liu@linux.intel.com>
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> +static void ir_remove_ioapic_hpet_scope(struct intel_iommu *iommu)
> +{
> +	int i;
>  
> -			ir_parse_one_hpet_scope(scope, iommu);
> -		}
> -		start += scope->length;
> -	}
> +	for (i = 0; i < MAX_HPET_TBS; i++)
> +		if (ir_hpet[i].iommu == iommu)
> +			ir_hpet[i].iommu = NULL;

Hi Gerry, why not reset whole ir_hpe and ir_ioapic data struct?



>  
> -	return 0;
> +	for (i = 0; i < MAX_IO_APICS; i++)
> +		if (ir_ioapic[i].iommu == iommu)
> +			ir_ioapic[i].iommu = NULL;
>  }
>