[tip:x86/apic] genirq: Add config option for reservation mode

[tip-bot for Thomas Gleixner]

Commit-ID:  2b5175c4fa974b6aa05bbd2ee8d443a8036a1714
Gitweb:     https://git.kernel.org/tip/2b5175c4fa974b6aa05bbd2ee8d443a8036a1714
Author:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Tue, 17 Oct 2017 09:54:57 +0200
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Wed, 18 Oct 2017 15:38:30 +0200

genirq: Add config option for reservation mode

The interrupt reservation mode requires reactivation of PCI/MSI
interrupts. Create a config option, so the PCI code can set the
corresponding flag when required.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Josh Poulson <jopoulso@xxxxxxxxxxxxx>
Cc: Mihai Costache <v-micos@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Dexuan Cui <decui@xxxxxxxxxxxxx>
Cc: Simon Xiao <sixiao@xxxxxxxxxxxxx>
Cc: Saeed Mahameed <saeedm@xxxxxxxxxxxx>
Cc: Jork Loeser <Jork.Loeser@xxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: devel@xxxxxxxxxxxxxxxxxxxxxx
Cc: KY Srinivasan <kys@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20171017075600.369375409@xxxxxxxxxxxxx

---
 kernel/irq/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index ac1a3e2..89e3558 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -100,6 +100,9 @@ config IRQ_TIMINGS
 config GENERIC_IRQ_MATRIX_ALLOCATOR
 	bool
 
+config GENERIC_IRQ_RESERVATION_MODE
+	bool
+
 config IRQ_DOMAIN_DEBUG
 	bool "Expose hardware/virtual IRQ mapping via debugfs"
 	depends on IRQ_DOMAIN && DEBUG_FS