Re: [Qemu-devel] [PATCH] i386: Fix signedness of hyperv_spinlock_attempts

[Vitaly Kuznetsov <vkuznets@redhat.com>]

Eduardo Habkost <ehabkost@redhat.com> writes:

> The current default value for hv-spinlocks is 0xFFFFFFFF (meaning
> "never retry").  However, the value is stored as a signed
> integer, making the getter of the hv-spinlocks QOM property
> return -1 instead of 0xFFFFFFFF.
>
> Fix this by changing the type of X86CPU::hyperv_spinlock_attempts
> to uint32_t.  This has no visible effect to guest operating
> systems, affecting just the behavior of the QOM getter.
>
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
>  target/i386/cpu.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/target/i386/cpu.h b/target/i386/cpu.h
> index 0732e059ec..8158d0de73 100644
> --- a/target/i386/cpu.h
> +++ b/target/i386/cpu.h
> @@ -1372,7 +1372,7 @@ struct X86CPU {
>  
>      bool hyperv_vapic;
>      bool hyperv_relaxed_timing;
> -    int hyperv_spinlock_attempts;
> +    uint32_t hyperv_spinlock_attempts;
>      char *hyperv_vendor_id;
>      bool hyperv_time;
>      bool hyperv_crash;

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>

-- 
Vitaly