jhb db3d2a3c74 Convert the number of MSI IRQs on x86 from a constant to a tunable.
The number of MSI IRQs still defaults to 512, but it can now be
changed at boot time via the machdep.num_msi_irqs tunable.

Reviewed by:	kib, royger (older version)
Reviewed by:	markj
MFC after:	1 month
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D17977
2018-11-15 18:37:41 +00:00
..