[LTP] [PATCH 0/3] s390 vdso fixes

[Li Wang]

Hi Heiko,

On Wed, Mar 24, 2021 at 5:58 AM Heiko Carstens <hca@linux.ibm.com> wrote:

> Li Wang reported that clock_gettime(CLOCK_MONOTONIC_RAW, ...) does not
> work correctly on s390 via vdso. Debugging this also revealed an
> unrelated bug (first patch).
>
> The second patch fixes the problem: the tod clock steering parameters
> required by __arch_get_hw_counter() are only present within the first
> element of the _vdso_data array and not at all within the _timens_data
> array.
>
> Instead of working around this simply provide an s390 specific vdso
> data page which contains the tod clock steering parameters.
>
> This allows also to remove ARCH_HAS_VDSO_DATA again.
>
> Heiko Carstens (3):
>   s390/vdso: fix tod clock steering
>   s390/vdso: fix arch_data access for __arch_get_hw_counter()
>   lib/vdso: remove struct arch_vdso_data from vdso data struct
>

Thanks for the quick fix! I confirmed these patches work for me.
(tested with latest mainline kernel v5.12-rc4)

Tested-by: Li Wang <liwang@redhat.com>

-- 
Regards,
Li Wang
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