[PATCH 28/34] KVM: selftests: Add GUEST_SYNC[1-6] macros for synchronizing more data

[Fuad Tabba]

On Sun, Nov 5, 2023 at 4:34 PM Paolo Bonzini <pbonzini at redhat.com> wrote:
>
> From: Sean Christopherson <seanjc at google.com>
>
> Add GUEST_SYNC[1-6]() so that tests can pass the maximum amount of
> information supported via ucall(), without needing to resort to shared
> memory.
>
> Signed-off-by: Sean Christopherson <seanjc at google.com>
> Message-Id: <20231027182217.3615211-31-seanjc at google.com>
> Signed-off-by: Paolo Bonzini <pbonzini at redhat.com>
> ---

Reviewed-by: Fuad Tabba <tabba at google.com>
Tested-by: Fuad Tabba <tabba at google.com>

Cheers,
/fuad

>  tools/testing/selftests/kvm/include/ucall_common.h | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/tools/testing/selftests/kvm/include/ucall_common.h b/tools/testing/selftests/kvm/include/ucall_common.h
> index ce33d306c2cb..0fb472a5a058 100644
> --- a/tools/testing/selftests/kvm/include/ucall_common.h
> +++ b/tools/testing/selftests/kvm/include/ucall_common.h
> @@ -52,6 +52,17 @@ int ucall_nr_pages_required(uint64_t page_size);
>  #define GUEST_SYNC_ARGS(stage, arg1, arg2, arg3, arg4) \
>                                 ucall(UCALL_SYNC, 6, "hello", stage, arg1, arg2, arg3, arg4)
>  #define GUEST_SYNC(stage)      ucall(UCALL_SYNC, 2, "hello", stage)
> +#define GUEST_SYNC1(arg0)      ucall(UCALL_SYNC, 1, arg0)
> +#define GUEST_SYNC2(arg0, arg1)        ucall(UCALL_SYNC, 2, arg0, arg1)
> +#define GUEST_SYNC3(arg0, arg1, arg2) \
> +                               ucall(UCALL_SYNC, 3, arg0, arg1, arg2)
> +#define GUEST_SYNC4(arg0, arg1, arg2, arg3) \
> +                               ucall(UCALL_SYNC, 4, arg0, arg1, arg2, arg3)
> +#define GUEST_SYNC5(arg0, arg1, arg2, arg3, arg4) \
> +                               ucall(UCALL_SYNC, 5, arg0, arg1, arg2, arg3, arg4)
> +#define GUEST_SYNC6(arg0, arg1, arg2, arg3, arg4, arg5) \
> +                               ucall(UCALL_SYNC, 6, arg0, arg1, arg2, arg3, arg4, arg5)
> +
>  #define GUEST_PRINTF(_fmt, _args...) ucall_fmt(UCALL_PRINTF, _fmt, ##_args)
>  #define GUEST_DONE()           ucall(UCALL_DONE, 0)
>
> --
> 2.39.1
>
>