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Re: [Qemu-devel] [PATCH qemu] e1000: CTRL.RST emulation

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH qemu] e1000: CTRL.RST emulation
Date: Tue, 27 Sep 2011 13:39:17 +0100

On 27 September 2011 13:32, Michael S. Tsirkin <address@hidden> wrote:
> On Tue, Sep 27, 2011 at 12:50:21PM +0100, Peter Maydell wrote:
>> On 27 September 2011 12:25, Michael S. Tsirkin <address@hidden> wrote:
>> > e1000 spec says CTRL.RST write should have the same effect
>> > as bus reset, except that is preserves PCI Config.
>> > Reset device registers and interrupts.
>> >
>> > Fix suggested by Andy Gospodarek <address@hidden>
>> Doesn't this have the same effect as this patch:
>> http://patchwork.ozlabs.org/patch/108673/
> Right except mine clears the interrupts as well.

I agree that's required, but why doesn't it belong in
e1000_reset() ? Surely a qdev reset ought also to clear
the output irq signals...
[Disclaimer: this is fishing for somebody to explain to
me what the semantics of qdev reset actually are :-)]

> I missed that patch - what happened to it in the end?

I think it just got lost in the shuffle (Anthony L never
did come back and actually produce a compiler that gave
a warning on it, so I think that was just a misremembering
on his part.)

-- PMM

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