函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\apic\io_apic.c Create Date:2022-07-27 09:29:36
Last Modify:2020-03-16 21:24:45 Copyright©Brick
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函数名称：native_restore_boot_irq_mode

函数原型：void native_restore_boot_irq_mode(void)

返回类型：void

参数：无

1424  如果pin不等于负1则
1427  memset( & entry, 0, entry的长度)
1428  0: enabled, 1: disabled 等于IOAPIC_UNMASKED
1429  0: edge, 1: level 等于IOAPIC_EDGE
1430  polarity等于IOAPIC_POL_HIGH
1431  0: physical, 1: logical 等于IOAPIC_DEST_MODE_PHYSICAL
1432  000: FIXED * 001: lowest prio * 111: ExtINT等于dest_ExtINT
1433  dest等于read_apic_id()
1438  ioapic_write_entry(apic, pin, entry)
1441  如果boot_cpu_has(Onboard APIC )或apic_from_smp_config()则disconnect_bsp_APIC - detach the APIC from the interrupt system*@virt_wire_setup: indicates, whether virtual wire mode is selected* Virtual wire mode is necessary to deliver legacy interrupts even when the* APIC is disabled.