From: Michael Ellerman Date: Fri, 24 Jul 2020 09:25:26 +0000 (+1000) Subject: selftests/powerpc: Update the stack expansion test X-Git-Tag: howlett/maple_spf/20210104~1301^2~61 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9ee571d84bf8cfdd587a1acbf3490ca90fc40c9d;p=users%2Fjedix%2Flinux-maple.git selftests/powerpc: Update the stack expansion test Update the stack expansion load/store test to take into account the new allowance of 4224 bytes below the stack pointer. Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200724092528.1578671-3-mpe@ellerman.id.au --- diff --git a/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c b/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c index 0587e11437f5..8dbfb51acf0f 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 4224 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, -4224, type) == 0); #ifdef __powerpc__ - assert(test_one(1 * _MB + page_size - 128, -2049, type) != 0); + assert(test_one(1 * _MB + page_size - 128, -4225, type) != 0); #else - assert(test_one(1 * _MB + page_size - 128, -2049, type) == 0); + assert(test_one(1 * _MB + page_size - 128, -4225, 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, -4224, type) == 0); } static int test(void)