When multiple MSIs are enabled with pci_enable_msi_block(), the
requested number of interrupts 'nvec' is rounded up to the nearest
power-of-two value. The result is then used for setting up the
number of MSI messages in the PCI device and allocation of
interrupt resources in the operating system
When multiple MSIs are enabled with pci_enable_msi_block(), the
requested number of interrupts 'nvec' is rounded up to the nearest
power-of-two value. The result is then used for setting up the
number of MSI messages in the PCI device and allocation of
interrupt resources in the operating system
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