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Re: [Qemu-trivial] [Qemu-devel] [PATCH v2 13/14] sm501: Add reset functi

From: Peter Maydell
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH v2 13/14] sm501: Add reset function and vmstate descriptor
Date: Thu, 2 Mar 2017 20:49:45 +0000

On 2 March 2017 at 20:18, BALATON Zoltan <address@hidden> wrote:
> On Thu, 2 Mar 2017, Peter Maydell wrote:
>> Don't use qemu_register_reset(). Set the appropriate dc->reset
>> function pointers instead.
> Any reason for that? This way I could save two more boilerplate functions
> because I could define reset function once, otherwise I'd need two versions
> taking sysbus and pci states just to extract the SM501State function and
> call this function. Do you still think I should do that instead?

qemu_register_reset is a pre-QOM method for doing reset;
the standard QOM way of saying "my device has some reset
behaviour" is to set its reset method pointer.
Code calling qemu_register_reset() is generally either (a) doing
something kind of weird or (b) old device code that hasn't yet
been converted to QOM.

> So should it be 4 patches: reset for pci, reset for sysbus, vmstate for pci,
> vmstate for sysbus or 2 patches: reset for both, vmstate for both?

I think I'd go with 2 patches, since the two are going to
share the bulk of the implementation in each case.

-- PMM

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