From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org ([203.11.71.1]:49655 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726048AbgGCOMk (ORCPT ); Fri, 3 Jul 2020 10:12:40 -0400 From: Michael Ellerman Subject: [PATCH 3/5] selftests/powerpc: Update the stack expansion test Date: Sat, 4 Jul 2020 00:13:25 +1000 Message-ID: <20200703141327.1732550-3-mpe@ellerman.id.au> In-Reply-To: <20200703141327.1732550-1-mpe@ellerman.id.au> References: <20200703141327.1732550-1-mpe@ellerman.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: linuxppc-dev@ozlabs.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, hughd@google.com Message-ID: <20200703141325.sqgsFMzp3_wxr3sId_gKUDZrZXfDkFgvfTWUo2WN9AU@z> Update the stack expansion load/store test to take into account the new allowance of 4096 bytes below the stack pointer. Signed-off-by: Michael Ellerman --- .../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) -- 2.25.1