diff options
| author | Dou Liyang <douly.fnst@cn.fujitsu.com> | 2018-05-23 10:35:55 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-06-06 13:38:01 +0200 |
| commit | 336628128826a9acb045571a960e32e4414ccb61 (patch) | |
| tree | 172d0a021897995579b33c5a8a3f11f89d15a9c4 /arch | |
| parent | cce2946b9b30a9b31a18de737d5010c08076e77f (diff) | |
x86/idt: Simplify the idt_setup_apic_and_irq_gates()
The idt_setup_apic_and_irq_gates() sets the gates from
FIRST_EXTERNAL_VECTOR up to FIRST_SYSTEM_VECTOR first. then secondly, from
FIRST_SYSTEM_VECTOR to NR_VECTORS, it takes both APIC=y and APIC=n into
account.
But for APIC=n, the FIRST_SYSTEM_VECTOR is equal to NR_VECTORS, all
vectors has been set at the first step.
Simplify the second step, make it just work for APIC=y.
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20180523023555.2933-1-douly.fnst@cn.fujitsu.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/idt.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c index 2c3a1b4294eb..74383a3780dc 100644 --- a/arch/x86/kernel/idt.c +++ b/arch/x86/kernel/idt.c @@ -317,15 +317,12 @@ void __init idt_setup_apic_and_irq_gates(void) set_intr_gate(i, entry); } - for_each_clear_bit_from(i, system_vectors, NR_VECTORS) { #ifdef CONFIG_X86_LOCAL_APIC + for_each_clear_bit_from(i, system_vectors, NR_VECTORS) { set_bit(i, system_vectors); set_intr_gate(i, spurious_interrupt); -#else - entry = irq_entries_start + 8 * (i - FIRST_EXTERNAL_VECTOR); - set_intr_gate(i, entry); -#endif } +#endif } /** |