Re: [Qemu-devel] [PATCH v2 3/4] util/cacheinfo.c: Use uintptr_t instead of unsigned long in AArch64 arch_cache_info()

[Thomas Huth <thuth@redhat.com>]

On 30/04/2019 20.13, Cao Jiaxi wrote:
> Windows ARM64 uses LLP64 model, which breaks current assumptions.
> 
> Signed-off-by: Cao Jiaxi <driver1998@foxmail.com>
> ---
>  util/cacheinfo.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/util/cacheinfo.c b/util/cacheinfo.c
> index 3cd080b83d..ce6f0dbf6a 100644
> --- a/util/cacheinfo.c
> +++ b/util/cacheinfo.c
> @@ -107,7 +107,7 @@ static void sys_cache_info(int *isize, int *dsize)
>  static void arch_cache_info(int *isize, int *dsize)
>  {
>      if (*isize == 0 || *dsize == 0) {
> -        unsigned long ctr;
> +        uintptr_t ctr;

Looking at the whole function, is uintptr_t really the right type to use
here? ctr does not seem to contain the value of a pointer variable, so
this looks wrong to me...
Do you get a compiler warning here? If so, how does it look like?
Anyway, I think it would be better to use a uint64_t or uint32_t type
here instead if possible?

 Thomas