Re: [PATCH] KVM: selftests: hyperv_tlb_flush: use swap() to swap PTEs

[Sean Christopherson]

On Thu, May 28, 2026, Piotr Zarycki wrote:
> Replace the open-coded swap with the swap() macro.
> 
> Signed-off-by: Piotr Zarycki <piotr.zarycki@xxxxxxxxx>
> ---
>  tools/testing/selftests/kvm/include/test_util.h    | 2 ++
>  tools/testing/selftests/kvm/x86/hyperv_tlb_flush.c | 6 +-----
>  2 files changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
> index d9b433b834f1..a66bc9ccba65 100644
> --- a/tools/testing/selftests/kvm/include/test_util.h
> +++ b/tools/testing/selftests/kvm/include/test_util.h
> @@ -26,6 +26,8 @@
>  
>  #define msecs_to_usecs(msec)    ((msec) * 1000ULL)
>  
> +#define swap(a, b)  do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)

This belongs in a common tools/ header, not in KVM's test_util.h.  I don't see
an obvious place, maybe tools/include/linux/kernel.h?