diff options
| author | Dmitry Safonov <[email protected]> | 2019-11-12 01:27:10 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2020-01-14 12:20:57 +0100 |
| commit | 64b302ab66c5965702693e79690823ca120288b9 (patch) | |
| tree | c25dbd01ca0bf17e1e9ca9a0e0c53b80849f02c3 /lib/test_overflow.c | |
| parent | 660fd04f9317172ae90f414c68b18a26ae88a829 (diff) | |
x86/vdso: Provide vdso_data offset on vvar_page
VDSO support for time namespaces needs to set up a page with the same
layout as VVAR. That timens page will be placed on position of VVAR page
inside namespace. That page has vdso_data->seq set to 1 to enforce
the slow path and vdso_data->clock_mode set to VCLOCK_TIMENS to enforce
the time namespace handling path.
To prepare the time namespace page the kernel needs to know the vdso_data
offset. Provide arch_get_vdso_data() helper for locating vdso_data on VVAR
page.
Co-developed-by: Andrei Vagin <[email protected]>
Signed-off-by: Andrei Vagin <[email protected]>
Signed-off-by: Dmitry Safonov <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions