Re: [Qemu-devel] [PATCH 1/4] 9pfs: V9fsQID: set type of version and path to unsigned

[Greg Kurz <groug@kaod.org>]

On Thu, 8 Feb 2018 19:00:16 +0100
<antonios.motakis@huawei.com> wrote:

> From: Antonios Motakis <antonios.motakis@huawei.com>
> 
> There is no need for signedness on these QID fields for 9p.
> 
> Signed-off-by: Antonios Motakis <antonios.motakis@huawei.com>
> ---

I agree these should be unsigned, but you have some more places to adapt
to this change. At least these:
- related traces in hw/9pfs/trace-events should then expect unsigned values
- donttouch_stat() in hw/9pfs/9p.c should stop comparing them to -1

>  fsdev/9p-marshal.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fsdev/9p-marshal.h b/fsdev/9p-marshal.h
> index c8823d8..d1ad364 100644
> --- a/fsdev/9p-marshal.h
> +++ b/fsdev/9p-marshal.h
> @@ -10,8 +10,8 @@ typedef struct V9fsString
>  typedef struct V9fsQID
>  {
>      int8_t type;

Even if your series doesn't use it, while here, let's drop the sign from
@type as well.

> -    int32_t version;
> -    int64_t path;
> +    uint32_t version;
> +    uint64_t path;
>  } V9fsQID;
>  
>  typedef struct V9fsStat