diff options
| author | Nicholas Piggin <[email protected]> | 2022-03-08 04:27:34 +1000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2022-05-19 23:11:26 +1000 |
| commit | 2896b2dff49d0377e4372f470dcddbcb26f2be59 (patch) | |
| tree | 854ce287fc7cb79a46ba739fb5981a5a67f2a003 /tools/perf/scripts/python/syscall-counts.py | |
| parent | 2f82ec19757f58549467db568c56e7dfff8af283 (diff) | |
powerpc/signal: Report minimum signal frame size to userspace via AT_MINSIGSTKSZ
Implement the AT_MINSIGSTKSZ AUXV entry, allowing userspace to
dynamically size stack allocations in a manner forward-compatible with
new processor state saved in the signal frame
For now these statically find the maximum signal frame size rather than
doing any runtime testing of features to minimise the size.
glibc 2.34 will take advantage of this, as will applications that use
use _SC_MINSIGSTKSZ and _SC_SIGSTKSZ.
Reviewed-by: Tulio Magno Quites Machado Filho <[email protected]>
Signed-off-by: Nicholas Piggin <[email protected]>
References: 94b07c1f8c39 ("arm64: signal: Report signal frame size to userspace via auxv")
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions