summaryrefslogtreecommitdiffstats
path: root/tools
diff options
context:
space:
mode:
authorMichael Neuling <mikey@neuling.org>2020-10-13 15:37:41 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2020-10-20 08:00:42 +1100
commitd1781f23704707d350b8c9006e2bdf5394bf91b2 (patch)
tree5ed3239645c68bbfd529011ca095f477d6b78233 /tools
parent1da4a0272c5469169f78cd76cf175ff984f52f06 (diff)
downloadlinux-d1781f23704707d350b8c9006e2bdf5394bf91b2.tar.bz2
selftests/powerpc: Make alignment handler test P9N DD2.1 vector CI load workaround
alignment_handler currently only tests the unaligned cases but it can also be useful for testing the workaround for the P9N DD2.1 vector CI load issue fixed by p9_hmi_special_emu(). This workaround was introduced in 5080332c2c89 ("powerpc/64s: Add workaround for P9 vector CI load issue"). This changes the loop to start from offset 0 rather than 1 so that we test the kernel emulation in p9_hmi_special_emu(). Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201013043741.743413-2-mikey@neuling.org
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/powerpc/alignment/alignment_handler.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/tools/testing/selftests/powerpc/alignment/alignment_handler.c b/tools/testing/selftests/powerpc/alignment/alignment_handler.c
index 2a0503bc7e49..cb53a8b777e6 100644
--- a/tools/testing/selftests/powerpc/alignment/alignment_handler.c
+++ b/tools/testing/selftests/powerpc/alignment/alignment_handler.c
@@ -266,8 +266,12 @@ int do_test(char *test_name, void (*test_func)(char *, char *))
}
rc = 0;
- /* offset = 0 no alignment fault, so skip */
- for (offset = 1; offset < 16; offset++) {
+ /*
+ * offset = 0 is aligned but tests the workaround for the P9N
+ * DD2.1 vector CI load issue (see 5080332c2c89 "powerpc/64s:
+ * Add workaround for P9 vector CI load issue")
+ */
+ for (offset = 0; offset < 16; offset++) {
width = 16; /* vsx == 16 bytes */
r = 0;