Re: Adding a new interrupt handler to the IDT
- From: Martin Feeney <mjfeeney@xxxxxxxxxxx>
- Date: Fri, 18 Aug 2006 16:22:19 GMT
I have a system which will be creating CPU interrupts via a user-supplied IDT value. I have a kernel module which will handle the interrupt - I just need to hook this code into the interrupt handler mechanism. I cannot find any documentation on how to create an entry in the IDT or to identify the linkage protocol (assuming I can create an IDT entry).
Note: These are NOT IRQs and, therefore, the request_irq() services cannot be used. This would be equivalent to creating a handler for the INT instruction.
Are you intending to create a back-door to the kernel via
an int instruction?
Where are the non-irq interrupts coming from, and how do
the get onto the CPU chip?
No, this is not a kernel backdoor. I will be running Linux under a custom hipervisor. The hipervisor can signal the guest (i.e. Linux) via an interrupt to handle certain events. I want to insert a handler into the IDT to handle these events. I want my device driver code to use Linux services if they are available rather than writing my custom code to tweak the IDT. I just haven't found these services...
.
- Follow-Ups:
- Re: Adding a new interrupt handler to the IDT
- From: Tauno Voipio
- Re: Adding a new interrupt handler to the IDT
- References:
- Adding a new interrupt handler to the IDT
- From: Martin Feeney
- Re: Adding a new interrupt handler to the IDT
- From: Tauno Voipio
- Adding a new interrupt handler to the IDT
- Prev by Date: Re: Adding a new interrupt handler to the IDT
- Next by Date: Re: Adding a new interrupt handler to the IDT
- Previous by thread: Re: Adding a new interrupt handler to the IDT
- Next by thread: Re: Adding a new interrupt handler to the IDT
- Index(es):
Relevant Pages
|
