Le 03/07/2020 à 16:13, Michael Ellerman a écrit :
Update the stack expansion load/store test to take into account the
new allowance of 4096 bytes below the stack pointer.
[I didn't receive patch 2, don't know why, hence commenting patch 2 here.]
Shouldn't patch 2 carry a fixes tag and be Cced to stable for
application to previous kernel releases ?
Christophe
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
---
.../selftests/powerpc/mm/stack_expansion_ldst.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c b/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c
index 0587e11437f5..95c3f3de16a1 100644
--- a/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c
+++ b/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c
@@ -186,17 +186,17 @@ static void test_one_type(enum access_type type, unsigned long page_size, unsign
// But if we go past the rlimit it should fail
assert(test_one(DEFAULT_SIZE, rlim_cur + 1, type) != 0);
- // Above 1MB powerpc only allows accesses within 2048 bytes of
+ // Above 1MB powerpc only allows accesses within 4096 bytes of
// r1 for accesses that aren't stdu
- assert(test_one(1 * _MB + page_size - 128, -2048, type) == 0);
+ assert(test_one(1 * _MB + page_size - 128, -4096, type) == 0);
#ifdef __powerpc__
- assert(test_one(1 * _MB + page_size - 128, -2049, type) != 0);
+ assert(test_one(1 * _MB + page_size - 128, -4097, type) != 0);
#else
- assert(test_one(1 * _MB + page_size - 128, -2049, type) == 0);
+ assert(test_one(1 * _MB + page_size - 128, -4097, type) == 0);
#endif
// By consuming 2MB of stack we test the stdu case
- assert(test_one(2 * _MB + page_size - 128, -2048, type) == 0);
+ assert(test_one(2 * _MB + page_size - 128, -4096, type) == 0);
}
static int test(void)
