s390/vdso: correct CFI annotations of vDSO functions

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Correct stack frame overhead for 31-bit vdso, which should be 96 rather
then 160. This is done by reusing STACK_FRAME_OVERHEAD definition which
contains correct value based on build flags. This fixes stack unwinding
within vdso code for 31-bit processes. While at it replace all hard coded
stack frame overhead values with the same definition in vdso64 as well.

Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Vasily Gorbik 2018-09-14 18:08:10 +02:00 • committed by Martin Schwidefsky

parent d1befa6582

commit 26f4414a45

4 changed files with 27 additions and 23 deletions

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19

arch/s390/kernel/vdso32/clock_gettime.S

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arch/s390/kernel/vdso32/gettimeofday.S

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25

arch/s390/kernel/vdso64/clock_gettime.S

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arch/s390/kernel/vdso64/gettimeofday.S

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