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Re: [Qemu-block] [Qemu-devel] [PATCH v7] pflash: Require backend size to

From: Philippe Mathieu-Daudé
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH v7] pflash: Require backend size to match device, improve errors
Date: Fri, 8 Mar 2019 15:26:51 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1

On 3/8/19 2:35 PM, Kevin Wolf wrote:
> Am 08.03.2019 um 13:28 hat Markus Armbruster geschrieben:
>> Laszlo Ersek <address@hidden> writes:
>>> This one has got to be one of the longest bike-shedding sessions! :)
>>> I'm fine with this patch, but I could suggest two improvements.
>>> (1) When blk_getlength() fails, we could format the negative error code
>>> returned by it into the error message.
>> I can do that.
> By using error_setg_errno(), I assume. Not throwing away error details
> is always good.
>>> (2) We could extract the common code to a new function in
>>> "hw/block/block.c". (It says "Common code for block device models" on
>>> the tin.)
>> There's so much common code in these two files even before this patch...
> My understanding is that hw/block/block.c contains code that is
> potentially useful to all kinds of block devices, not random code that
> two specific similar devices happen to share.
> If we want to deduplicate some code in the flash devices, without any
> expectation that other devices will use it at some point, I'd rather
> create a new source file hw/block/pflash_common.c or something like
> that.

Agreed, I like that suggestion too.
Actually we already have been talking about a such
cleanup/refactor/rewrite with Markus, but this will wait the next QEMU
dev cycle.

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