linux/arch/powerpc/sysdev/xive/Kconfig

config PPC_XIVE
	bool
	default n
	select PPC_SMP_MUXED_IPI
	select HARDIRQS_SW_RESEND

config PPC_XIVE_NATIVE
	bool
	default n
	select PPC_XIVE
	depends on PPC_POWERNV
powerpc/xive: Native exploitation of the XIVE interrupt controller The XIVE interrupt controller is the new interrupt controller found in POWER9. It supports advanced virtualization capabilities among other things. Currently we use a set of firmware calls that simulate the old "XICS" interrupt controller but this is fairly inefficient. This adds the framework for using XIVE along with a native backend which OPAL for configuration. Later, a backend allowing the use in a KVM or PowerVM guest will also be provided. This disables some fast path for interrupts in KVM when XIVE is enabled as these rely on the firmware emulation code which is no longer available when the XIVE is used natively by Linux. A latter patch will make KVM also directly exploit the XIVE, thus recovering the lost performance (and more). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [mpe: Fixup pr_xxx("XIVE:"...), don't split pr_xxx() strings, tweak Kconfig so XIVE_NATIVE selects XIVE and depends on POWERNV, fix build errors when SMP=n, fold in fixes from Ben: Don't call cpu_online() on an invalid CPU number Fix irq target selection returning out of bounds cpu# Extra sanity checks on cpu numbers ] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 2017-04-05 07:54:50 +00:00			`config PPC_XIVE`
			`bool`
			`default n`
			`select PPC_SMP_MUXED_IPI`
			`select HARDIRQS_SW_RESEND`

			`config PPC_XIVE_NATIVE`
			`bool`
			`default n`
			`select PPC_XIVE`
			`depends on PPC_POWERNV`