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| author | Heiko Carstens <hca@linux.ibm.com> | 2021-03-23 21:40:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-07 15:00:10 +0200 |
| commit | b332265430c8d6bf1a99fec489a38d954fd0ef72 (patch) | |
| tree | 12d3cfa6632f76d8ad8c4d8e0f410bf842ad7be4 /arch/s390 | |
| parent | f706acc9312b9bad5dd49f0733d9dc7ca3de8c01 (diff) | |
| download | linux-stable-b332265430c8d6bf1a99fec489a38d954fd0ef72.tar.gz linux-stable-b332265430c8d6bf1a99fec489a38d954fd0ef72.tar.bz2 linux-stable-b332265430c8d6bf1a99fec489a38d954fd0ef72.zip | |
s390/vdso: copy tod_steering_delta value to vdso_data page
commit 72bbc226ed2ef0a46c165a482861fff00dd6d4e1 upstream.
When converting the vdso assembler code to C it was forgotten to
actually copy the tod_steering_delta value to vdso_data page.
Which in turn means that tod clock steering will not work correctly.
Fix this by simply copying the value whenever it is updated.
Fixes: 4bff8cb54502 ("s390: convert to GENERIC_VDSO")
Cc: <stable@vger.kernel.org> # 5.10
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/time.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 0ac30ee2c633..b6517453fa23 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -398,6 +398,7 @@ static void clock_sync_global(unsigned long long delta) tod_steering_delta); tod_steering_end = now + (abs(tod_steering_delta) << 15); vdso_data->arch_data.tod_steering_end = tod_steering_end; + vdso_data->arch_data.tod_steering_delta = tod_steering_delta; /* Update LPAR offset. */ if (ptff_query(PTFF_QTO) && ptff(&qto, sizeof(qto), PTFF_QTO) == 0) |