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x86/idt: Move interrupt gate initialization to IDT code 

Move the gate intialization from interrupt init to the IDT code so all IDT
related operations are at a single place.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20170828064959.340209198@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner 2017-08-28 08:47:55 +02:00 committed by Ingo Molnar
parent 636a7598f6
commit dc20b2d526
2 changed files with 18 additions and 18 deletions
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18
arch/x86/kernel/idt.c
View File

@ -286,7 +286,25 @@ void __init idt_setup_debugidt_traps(void)
*/ */
void __init idt_setup_apic_and_irq_gates(void) void __init idt_setup_apic_and_irq_gates(void)
{ {
int i = FIRST_EXTERNAL_VECTOR;
void *entry;
idt_setup_from_table(idt_table, apic_idts, ARRAY_SIZE(apic_idts)); idt_setup_from_table(idt_table, apic_idts, ARRAY_SIZE(apic_idts));
for_each_clear_bit_from(i, used_vectors, FIRST_SYSTEM_VECTOR) {
entry = irq_entries_start + 8 * (i - FIRST_EXTERNAL_VECTOR);
set_intr_gate(i, entry);
}
for_each_clear_bit_from(i, used_vectors, NR_VECTORS) {
#ifdef CONFIG_X86_LOCAL_APIC
set_bit(i, used_vectors);
set_intr_gate(i, spurious_interrupt);
#else
entry = irq_entries_start + 8 * (i - FIRST_EXTERNAL_VECTOR);
set_intr_gate(i, entry);
#endif
}
} }
/** /**

18
arch/x86/kernel/irqinit.c
View File

@ -89,29 +89,11 @@ void __init init_IRQ(void)
void __init native_init_IRQ(void) void __init native_init_IRQ(void)
{ {
int i;
/* Execute any quirks before the call gates are initialised: */ /* Execute any quirks before the call gates are initialised: */
x86_init.irqs.pre_vector_init(); x86_init.irqs.pre_vector_init();
idt_setup_apic_and_irq_gates(); idt_setup_apic_and_irq_gates();
/*
* Cover the whole vector space, no vector can escape
* us. (some of these will be overridden and become
* 'special' SMP interrupts)
*/
i = FIRST_EXTERNAL_VECTOR;
for_each_clear_bit_from(i, used_vectors, FIRST_SYSTEM_VECTOR) {
/* IA32_SYSCALL_VECTOR could be used in trap_init already. */
set_intr_gate(i, irq_entries_start +
8 * (i - FIRST_EXTERNAL_VECTOR));
}
#ifdef CONFIG_X86_LOCAL_APIC
for_each_clear_bit_from(i, used_vectors, NR_VECTORS)
set_intr_gate(i, spurious_interrupt);
#endif
if (!acpi_ioapic && !of_ioapic && nr_legacy_irqs()) if (!acpi_ioapic && !of_ioapic && nr_legacy_irqs())
setup_irq(2, &irq2); setup_irq(2, &irq2);