Re: [Qemu-block] [Qemu-devel] [PATCH v7] pflash: Require backend size to match device, improve errors

[Philippe Mathieu-Daudé]

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.