diff options
| author |   Sachin Sant <sachinp@linux.vnet.ibm.com> | 2021-12-13 22:12:23 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-12-16 21:31:46 +1100 |
| commit | 18678591846d668649fbd4f87b4a4c470818d386 (patch) | |
| tree | 7530da75f9674bbd97c6d1168248aa175f9ee6e9 /tools/testing/selftests/powerpc/security | |
| parent | powerpc/pseries: use slab context cpumask allocation in CPU hotplug init (diff) | |
| download | wireguard-linux-18678591846d668649fbd4f87b4a4c470818d386.tar.xz wireguard-linux-18678591846d668649fbd4f87b4a4c470818d386.zip | |
selftests/powerpc: skip tests for unavailable mitigations.
Mitigation patching test iterates over a set of mitigations irrespective
of whether a certain mitigation is supported/available in the kernel.
This causes following messages on a kernel where some mitigations
are unavailable:
Spawned threads enabling/disabling mitigations ...
cat: entry_flush: No such file or directory
cat: uaccess_flush: No such file or directory
Waiting for timeout ...
OK
This patch adds a check for available mitigations in the kernel.
Reported-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Signed-off-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Reviewed-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/163941374362.36967.18016981579099073379.sendpatchset@1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa
Diffstat (limited to 'tools/testing/selftests/powerpc/security')
| -rwxr-xr-x | tools/testing/selftests/powerpc/security/mitigation-patching.sh | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/security/mitigation-patching.sh b/tools/testing/selftests/powerpc/security/mitigation-patching.sh index b0b20e0b4e30..f43aa4b77fba 100755 --- a/tools/testing/selftests/powerpc/security/mitigation-patching.sh +++ b/tools/testing/selftests/powerpc/security/mitigation-patching.sh @@ -44,7 +44,10 @@ mitigations="barrier_nospec stf_barrier count_cache_flush rfi_flush entry_flush for m in $mitigations do - do_one "$m" & + if [[ -f /sys/kernel/debug/powerpc/$m ]] + then + do_one "$m" & + fi done echo "Spawned threads enabling/disabling mitigations ..." |