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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-31 18:48:47 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-04-14 15:04:44 +0200 |
| commit | 74205b3fc2effde821b219d955c70e727dc43cc6 (patch) | |
| tree | 73fdf962ccea23430de4b5d350b4434d85173341 /arch/powerpc/kernel/vdso64 | |
| parent | powerpc/vdso: Separate vvar vma from vdso (diff) | |
| download | linux-74205b3fc2effde821b219d955c70e727dc43cc6.tar.xz linux-74205b3fc2effde821b219d955c70e727dc43cc6.zip | |
powerpc/vdso: Add support for time namespaces
This patch adds the necessary glue to provide time namespaces.
Things are mainly copied from ARM64.
__arch_get_timens_vdso_data() calculates timens vdso data position
based on the vdso data position, knowing it is the next page in vvar.
This avoids having to redo the mflr/bcl/mflr/mtlr dance to locate
the page relative to running code position.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> # vDSO parts
Acked-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1a15495f80ec19a87b16cf874dbf7c3fa5ec40fe.1617209142.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/vdso64')
| -rw-r--r-- | arch/powerpc/kernel/vdso64/vdso64.lds.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/vdso64/vdso64.lds.S b/arch/powerpc/kernel/vdso64/vdso64.lds.S index 2f3c359cacd3..0288cad428b0 100644 --- a/arch/powerpc/kernel/vdso64/vdso64.lds.S +++ b/arch/powerpc/kernel/vdso64/vdso64.lds.S @@ -17,7 +17,7 @@ ENTRY(_start) SECTIONS { - PROVIDE(_vdso_datapage = . - PAGE_SIZE); + PROVIDE(_vdso_datapage = . - 2 * PAGE_SIZE); . = SIZEOF_HEADERS; .hash : { *(.hash) } :text |