On 03/27/2017 10:11 AM, Christoph Hellwig wrote:
On Mon, Mar 27, 2017 at 09:59:35AM -0700, David Daney wrote:
On 03/27/2017 01:29 AM, Christoph Hellwig wrote:
Unused now that all callers switched to pci_alloc_irq_vectors.
And you are aware that the ThunderX GPIO driver that I am attempting to
merge uses this interface.
If this patch gets merged, should I ask to revert it when the GPIO driver
goes in?
No. You should not use pci_enable_msix in your new driver as I told
you before.
You offer no solution for drivers that would benefit from using a sparse
sub set of the available MSI-X vectors.
Use pci_enable_msix_{exact,range} for now, as I told you before.
That still results in twice as many MSI-X being provisioned than are needed.
For drivers that use a contiguous range of MSI-X, your suggestion is
usable, but for others you are forcing resources to be wasted. For what
end?
David Daney
