x86: Move irq_init to x86_init_ops
irq_init is overridden by x86_quirks and by paravirts. Unify the whole
mess and make it an unconditional x86_init_ops function which defaults
to the standard function and can be overridden by the early platform
code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h
index 8fe2782..ddda6cb 100644
--- a/arch/x86/include/asm/irq.h
+++ b/arch/x86/include/asm/irq.h
@@ -37,7 +37,6 @@
#endif
extern void (*generic_interrupt_extension)(void);
-extern void init_IRQ(void);
extern void native_init_IRQ(void);
extern bool handle_irq(unsigned irq, struct pt_regs *regs);
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index 6d66896..25922af 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -201,8 +201,6 @@
};
struct pv_irq_ops {
- void (*init_IRQ)(void);
-
/*
* Get/set interrupt state. save_fl and restore_fl are only
* expected to use X86_EFLAGS_IF; all other bits
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index 66a3197..404086f 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -16,12 +16,9 @@
struct x86_quirks {
int (*arch_pre_time_init)(void);
int (*arch_time_init)(void);
- int (*arch_intr_init)(void);
int (*arch_trap_init)(void);
};
-extern void x86_quirk_intr_init(void);
-
extern void x86_quirk_trap_init(void);
extern void x86_quirk_pre_time_init(void);
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 65e3394..8d7be65 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -47,9 +47,11 @@
* struct x86_init_irqs - platform specific interrupt setup
* @pre_vector_init: init code to run before interrupt vectors
* are set up.
+ * @intr_init: interrupt init code
*/
struct x86_init_irqs {
void (*pre_vector_init)(void);
+ void (*intr_init)(void);
};
/**
diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c
index ec8b311..eafd341 100644
--- a/arch/x86/kernel/apic/numaq_32.c
+++ b/arch/x86/kernel/apic/numaq_32.c
@@ -265,7 +265,6 @@
static struct x86_quirks numaq_x86_quirks __initdata = {
.arch_pre_time_init = numaq_pre_time_init,
.arch_time_init = NULL,
- .arch_intr_init = NULL,
.arch_trap_init = NULL,
};
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index acdf088..e0142cd 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -140,8 +140,10 @@
}
}
-/* Overridden in paravirt.c */
-void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
+void init_IRQ(void)
+{
+ x86_init.irqs.intr_init();
+}
static void __init smp_intr_init(void)
{
@@ -238,12 +240,6 @@
#ifdef CONFIG_X86_32
/*
- * Call quirks after call gates are initialised (usually add in
- * the architecture specific gates):
- */
- x86_quirk_intr_init();
-
- /*
* External FPU? Set up irq13 if so, for
* original braindamaged IBM FERR coupling.
*/
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 532c9a2..d76bfbe 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -183,11 +183,6 @@
return insn_len;
}
-void init_IRQ(void)
-{
- pv_irq_ops.init_IRQ();
-}
-
static void native_flush_tlb(void)
{
__native_flush_tlb();
@@ -328,7 +323,6 @@
};
struct pv_irq_ops pv_irq_ops = {
- .init_IRQ = native_init_IRQ,
.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
.restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
.irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 54043cb..d3da0f7 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1021,23 +1021,6 @@
#ifdef CONFIG_X86_32
/**
- * x86_quirk_intr_init - post gate setup interrupt initialisation
- *
- * Description:
- * Fill in any interrupts that may have been left out by the general
- * init_IRQ() routine. interrupts having to do with the machine rather
- * than the devices on the I/O bus (like APIC interrupts in intel MP
- * systems) are started here.
- **/
-void __init x86_quirk_intr_init(void)
-{
- if (x86_quirks->arch_intr_init) {
- if (x86_quirks->arch_intr_init())
- return;
- }
-}
-
-/**
* x86_quirk_trap_init - initialise system specific traps
*
* Description:
diff --git a/arch/x86/kernel/visws_quirks.c b/arch/x86/kernel/visws_quirks.c
index 1d6309d..a490137 100644
--- a/arch/x86/kernel/visws_quirks.c
+++ b/arch/x86/kernel/visws_quirks.c
@@ -228,7 +228,6 @@
static struct x86_quirks visws_x86_quirks __initdata = {
.arch_time_init = visws_time_init,
- .arch_intr_init = NULL,
.arch_trap_init = visws_trap_init,
};
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index f2abe21..8cb5933 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -39,5 +39,6 @@
.irqs = {
.pre_vector_init = init_ISA_irqs,
+ .intr_init = native_init_IRQ,
},
};
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 11445c1..1ff98651 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -1262,7 +1262,6 @@
*/
/* Interrupt-related operations */
- pv_irq_ops.init_IRQ = lguest_init_IRQ;
pv_irq_ops.save_fl = PV_CALLEE_SAVE(save_fl);
pv_irq_ops.restore_fl = __PV_IS_CALLEE_SAVE(lg_restore_fl);
pv_irq_ops.irq_disable = PV_CALLEE_SAVE(irq_disable);
@@ -1325,6 +1324,7 @@
pv_time_ops.get_tsc_khz = lguest_tsc_khz;
x86_init.resources.memory_setup = lguest_memory_setup;
+ x86_init.irqs.intr_init = lguest_init_IRQ;
/*
* Now is a good time to look at the implementations of these functions
diff --git a/arch/x86/xen/irq.c b/arch/x86/xen/irq.c
index cfd1779..9d30105 100644
--- a/arch/x86/xen/irq.c
+++ b/arch/x86/xen/irq.c
@@ -1,5 +1,7 @@
#include <linux/hardirq.h>
+#include <asm/x86_init.h>
+
#include <xen/interface/xen.h>
#include <xen/interface/sched.h>
#include <xen/interface/vcpu.h>
@@ -112,8 +114,6 @@
}
static const struct pv_irq_ops xen_irq_ops __initdata = {
- .init_IRQ = xen_init_IRQ,
-
.save_fl = PV_CALLEE_SAVE(xen_save_fl),
.restore_fl = PV_CALLEE_SAVE(xen_restore_fl),
.irq_disable = PV_CALLEE_SAVE(xen_irq_disable),
@@ -129,4 +129,5 @@
void __init xen_init_irq_ops()
{
pv_irq_ops = xen_irq_ops;
+ x86_init.irqs.intr_init = xen_init_IRQ;
}