[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH 1/2] Route PC irqs to ISA bus instead of i8259 d

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH 1/2] Route PC irqs to ISA bus instead of i8259 directly
Date: Mon, 10 Aug 2009 10:34:19 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Lightning/1.0pre Thunderbird/3.0b2

On 08/09/09 18:44, Avi Kivity wrote:
A PC has its motherboard IRQ lines connected to both the PIC and IOAPIC.
Currently, qemu routes IRQs to the PIC which then calls the IOAPIC, an
incestuous arrangement.  In order to clean this up, create a new ISA IRQ
abstraction, and have devices raise ISA IRQs (which in turn raise the i8259
IRQs as usual).

There are isa-bus qdev patches in anthonys patch queue. I think it makes sense to do this cleanup on top of the isa-bus patches. Maybe it makes sense to integrate it more, i.e. have the irqs as element in IsaBus ...


reply via email to

[Prev in Thread] Current Thread [Next in Thread]