On Fri, 2014-12-12 at 23:14 +0800, Feng Wu wrote: > Add the Intel side implementation for capability in > struct irq_remap_ops. > > Signed-off-by: Feng Wu <feng...@intel.com> > Reviewed-by: Jiang Liu <jiang....@linux.intel.com>
> +static bool intel_irq_remapping_capability(enum irq_remap_cap cap)
> +{
> + struct dmar_drhd_unit *drhd;
> + struct intel_iommu *iommu;
> +
> + switch (cap) {
> + case IRQ_POSTING_CAP:
> + /*
> + * If 1) posted-interrupts is disabled by user
> + * or 2) irq remapping is disabled, posted-interrupts
> + * is not supported.
> + */
> + if (disable_irq_post || !irq_remapping_enabled)
> + return 0;
> +
> + for_each_iommu(iommu, drhd)
> + if (!cap_pi_support(iommu->cap))
> + return 0;
> +
If a new IOMMU is hotplugged now which doesn't support posted
interrupts, what happens?
--
David Woodhouse Open Source Technology Centre
david.woodho...@intel.com Intel Corporation
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