[patch 3/3] x86/vector/msi: Select CONFIG_GENERIC_IRQ_RESERVATION_MODE

[Thomas Gleixner]

Select CONFIG_GENERIC_IRQ_RESERVATION_MODE so PCI/MSI domains get the
MSI_FLAG_MUST_REACTIVATE flag set in pci_msi_create_irq_domain().

Remove the explicit setters of this flag in the apic/msi code as they are
not longer required.

Fixes: 4900be83602b ("x86/vector/msi: Switch to global reservation mode")
Reported-by: Dexuan Cui <decui@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/x86/Kconfig           |    2 +-
 arch/x86/kernel/apic/msi.c |    5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -95,7 +95,7 @@ config X86
 	select GENERIC_IRQ_MATRIX_ALLOCATOR	if X86_LOCAL_APIC
 	select GENERIC_IRQ_MIGRATION		if SMP
 	select GENERIC_IRQ_PROBE
-	select GENERIC_IRQ_SHOW
+	select GENERIC_IRQ_RESERVATION_MODE
 	select GENERIC_PENDING_IRQ		if SMP
 	select GENERIC_SMP_IDLE_THREAD
 	select GENERIC_STRNCPY_FROM_USER
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -129,7 +129,7 @@ static struct msi_domain_ops pci_msi_dom
 
 static struct msi_domain_info pci_msi_domain_info = {
 	.flags		= MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-			  MSI_FLAG_PCI_MSIX | MSI_FLAG_MUST_REACTIVATE,
+			  MSI_FLAG_PCI_MSIX,
 	.ops		= &pci_msi_domain_ops,
 	.chip		= &pci_msi_controller,
 	.handler	= handle_edge_irq,
@@ -167,8 +167,7 @@ static struct irq_chip pci_msi_ir_contro
 
 static struct msi_domain_info pci_msi_ir_domain_info = {
 	.flags		= MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-			  MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX |
-			  MSI_FLAG_MUST_REACTIVATE,
+			  MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX,
 	.ops		= &pci_msi_domain_ops,
 	.chip		= &pci_msi_ir_controller,
 	.handler	= handle_edge_irq,