Re: IRQ IN LINUX

["pl ice" <telent997@xxxxxxxxx>]

Another questions ,if i want send another interrupt using software generated in one's interrupt service program,how to do?using "INT N" and will it make troubles?

2008/12/3 chentong <chentong@xxxxxxxxxx>

I think it supports one at one moment, otherwise the kernel must dicide which PIC to route  to when interrupts raise from one device.

 

 

2008-12-03

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chentong

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发件人： pl ice

发送时间： 2008-12-03  01:31:05

收件人： kernelnewbies

抄送：

主题： IRQ IN LINUX

hi,

   when i study interrupt handle in linux,i confuse a question about PIC(8259) and APIC now  we have both in our  hardware ,and how the kernel know if the hardware support APIC ,only through our configuration about enable APIC ? And if we configure APIC in kernel configuration ,will kernel init PIC in hardware,APIC and PIC only one work or both work?

 

Best Regards,

                   Lin