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Re: [Xen-devel] [PATCH v2 08/11] IOMMU: propagate IOMMU Device-TLB flush error up to iommu_iotlb_flush{, _all} (leaf ones).

>>> On 18.04.16 at 16:00, <quan.xu@xxxxxxxxx> wrote:
> While IOMMU Device-TLB flush timed out, xen calls panic() at present.
> However the existing panic() is going to be eliminated, so we must
> propagate the IOMMU Device-TLB flush error up to the 
> iommu_iotlb_flush{,_all}.
> If IOMMU mapping and unmapping failed, the domain (with the exception of
> the hardware domain) is crashed, treated as a fatal error. Rollback can
> be lighter weight.
> This patch fixes the leaf ones.
> Signed-off-by: Quan Xu <quan.xu@xxxxxxxxx>

Looks okay except for the again missing uses of __must_check on
function declarations or, where needed, definitions.


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