lkml.org 
[lkml]   [2017]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[patch 35/41] 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>
    ---
    arch/x86/kernel/idt.c | 18 ++++++++++++++++++
    arch/x86/kernel/irqinit.c | 18 ------------------
    2 files changed, 18 insertions(+), 18 deletions(-)

    --- a/arch/x86/kernel/idt.c
    +++ b/arch/x86/kernel/idt.c
    @@ -285,7 +285,25 @@ void __init idt_setup_debugidt_traps(voi
    */
    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));
    +
    + 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
    + }
    }

    /**
    --- a/arch/x86/kernel/irqinit.c
    +++ b/arch/x86/kernel/irqinit.c
    @@ -89,29 +89,11 @@ void __init init_IRQ(void)

    void __init native_init_IRQ(void)
    {
    - int i;
    -
    /* Execute any quirks before the call gates are initialised: */
    x86_init.irqs.pre_vector_init();

    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())
    setup_irq(2, &irq2);


    \
     
     \ /
      Last update: 2017-08-25 12:58    [W:4.170 / U:0.132 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site