QEMU IRQ abstraction

QEMU IRQ abstraction

[Anthony Liguori]

Paul Brook just committed a rather large changeset to abstract all the 
IRQ stuff through QEMU.  This should make it pretty easy to implement 
in-kernel APIC without hacking the i8259 since all of the hardware 
emulation now takes a qemu_irq structure.

Once it settles down a little, it may be worth sync'ing KVM with QEMU CVS.

Regards,

Anthony Liguori

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Re: QEMU IRQ abstraction

[Gregory Haskins]

Anthony,  
 
Thanks for the update!  That sounds very promising. 
 
Regards, 
-Greg 
 
 
-----Original Message----- 
From: Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org> 
To: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org> 
kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org> 
Gregory Haskins <GHaskins-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org> 
Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org> 
Creation Date: 4/7 3:58 pm 
Subject: QEMU IRQ abstraction 
 
Paul Brook just committed a rather large changeset to abstract all the  
IRQ stuff through QEMU.  This should make it pretty easy to implement  
in-kernel APIC without hacking the i8259 since all of the hardware  
emulation now takes a qemu_irq structure. 
 
Once it settles down a little, it may be worth sync'ing KVM with QEMU CVS. 
 
Regards, 
 
Anthony Liguori 
 
 

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Re: QEMU IRQ abstraction

[Avi Kivity]

Anthony Liguori wrote:
> Paul Brook just committed a rather large changeset to abstract all the 
> IRQ stuff through QEMU.  This should make it pretty easy to implement 
> in-kernel APIC without hacking the i8259 since all of the hardware 
> emulation now takes a qemu_irq structure.

I've taken a look, it's quite good.

>
> Once it settles down a little, it may be worth sync'ing KVM with QEMU 
> CVS.
>

Yes.


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: QEMU IRQ abstraction

[Ingo Molnar]

* Gregory Haskins <GHaskins-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org> wrote:

> Anthony,
>  
> Thanks for the update!  That sounds very promising.

seconded! It's useful even if all the PIC emulation is done by the 
kernel (which it will be eventually), and it allows for a much more 
gradual introduction of in-kernel PIC emulators.

/me retracts his Qemu flames

	Ingo

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