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Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf |
Date: |
Tue, 03 Jul 2012 22:15:00 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120421 Thunderbird/12.0 |
Am 03.07.2012 21:11, schrieb Blue Swirl:
> On Mon, Jul 2, 2012 at 2:34 PM, Stefan Hajnoczi <address@hidden> wrote:
>> On Mon, Jul 2, 2012 at 3:15 PM, Markus Armbruster <address@hidden> wrote:
>>> Andreas Färber <address@hidden> writes:
>>>
>>>> Am 02.07.2012 14:55, schrieb Stefan Hajnoczi:
>>>>> On Fri, Jun 29, 2012 at 05:34:40PM +0200, Markus Armbruster wrote:
>>>>>> Best to use the same type, to avoid unwanted truncation or sign
>>>>>> extension.
>>>>>>
>>>>>> BlockConf can't use plain int for cyls, heads and secs, because
>>>>>> integer properties require an exact width.
>>>>>>
>>>>>> Signed-off-by: Markus Armbruster <address@hidden>
>>>>>> ---
>>>>>> blockdev.h | 2 +-
>>>>>> hw/hd-geometry.c | 4 ++--
>>>>>> hw/ide/core.c | 2 +-
>>>>>> hw/scsi-disk.c | 2 +-
>>>>>> hw/virtio-blk.c | 2 +-
>>>>>> 5 files changed, 6 insertions(+), 6 deletions(-)
>>>>>
>>>>> It would be nice to update the hd_geometry_lchs_guess() trace event that
>>>>> you added to use uint32_t + %u instead of int + %d.
>>>>
>>>> PRIu32?
>>>
>>> uint32_t: Good point, will do.
>>>
>>> Conversion specifier: trace-events routinely prints uint32_t with %d and
>>> %x, never with PRI*32. I'm happy to change from %d to %u, but reluctant
>>> to add the first use of PRIu32.
>>
>> Either is fine by me although we might as well continue to do %u.
>
> I'd also vote for %u. PRI*32 do not seem very useful compared to plain
> int versions.
If it's not useful we should use unsigned int.
Mixing both is simply wrong. I'm okay with fixing it consistently in a
follow-up though. The Broken Window theory scores again (lack of const,
non-CamelCase type names, placement of {, wrong semicolons, etc.).
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Stefan Hajnoczi, 2012/07/02
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Andreas Färber, 2012/07/02
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Markus Armbruster, 2012/07/02
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Stefan Hajnoczi, 2012/07/02
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Blue Swirl, 2012/07/03
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf,
Andreas Färber <=
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Paolo Bonzini, 2012/07/04
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Eric Blake, 2012/07/04
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Blue Swirl, 2012/07/05
- Re: [Qemu-devel] [PATCH 18/32] hd-geometry: Switch to uint32_t to match BlockConf, Blue Swirl, 2012/07/05