> From: Wu, Feng
> Sent: Wednesday, June 24, 2015 1:18 PM
>
> This patch adds an API which is used to update the IRTE
> for posted-interrupt when guest changes MSI/MSI-X information.
>
> Signed-off-by: Feng Wu <feng...@intel.com>
Acked-by: Kevin Tian <kevin.t...@intel.com>, with one small comment:
> +int pi_update_irte(struct vcpu *v, struct pirq *pirq, uint8_t gvec)
> +{
> + struct irq_desc *desc;
> + struct msi_desc *msi_desc;
> + int remap_index;
> + int rc = 0;
> + struct pci_dev *pci_dev;
> + struct acpi_drhd_unit *drhd;
> + struct iommu *iommu;
> + struct ir_ctrl *ir_ctrl;
> + struct iremap_entry *iremap_entries = NULL, *p = NULL;
> + struct iremap_entry new_ire;
> + struct pi_desc *pi_desc = &v->arch.hvm_vmx.pi_desc;
> + unsigned long flags;
> + uint128_t old_ire, ret;
> +
> + desc = pirq_spin_lock_irq_desc(pirq, NULL);
> + if ( !desc )
> + return -ENOMEM;
-EINVAL?
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