Re: [Xen-devel] [PATCH v5 07/10] IOMMU: propagate IOMMU Device-TLB flush error up to iommu_iotlb_flush{, _all} (leaf ones).

["Xu, Quan" <quan.xu@xxxxxxxxx>]

On May 18, 2016 4:08 PM, Quan Xu <quan.xu@xxxxxxxxx> wrote:
> Propagate the IOMMU Device-TLB flush error up to the
> iommu_iotlb_flush{,_all}.
> 
> This patch fixes the leaf ones.
> --- a/xen/drivers/passthrough/vtd/iommu.c
> +++ b/xen/drivers/passthrough/vtd/iommu.c
> -static void intel_iommu_iotlb_flush(struct domain *d, unsigned long gfn,
> unsigned int page_count)
> +static int __must_check iommu_flush_iotlb_pages(struct domain *d,
> +                                                unsigned long gfn,
> +                                                unsigned int
> +page_count)
>  {
> -    __intel_iommu_iotlb_flush(d, gfn, 1, page_count);
> +    return iommu_flush_iotlb(d, gfn, 1, page_count);
>  }
> 
> -static void intel_iommu_iotlb_flush_all(struct domain *d)
> +static int iommu_flush_iotlb_all(struct domain *d)

Sorry,  I should add __must_check annotation here too.

Quan

>  {
> -    __intel_iommu_iotlb_flush(d, INVALID_GFN, 0, 0);
> +    return iommu_flush_iotlb(d, INVALID_GFN, 0, 0);
>  }
> 

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