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[61.220.137.37]) by smtp.gmail.com with ESMTPSA id r9sm24929639pfc.173.2019.05.14.02.01.07 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 14 May 2019 02:01:08 -0700 (PDT) From: Po-Hsu Lin To: kernel-team@lists.ubuntu.com Subject: [B][SRU][PATCH 1/1] selftests/powerpc: Remove Power9 copy_unaligned test Date: Tue, 14 May 2019 17:01:00 +0800 Message-Id: <20190514090100.5795-3-po-hsu.lin@canonical.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190514090100.5795-1-po-hsu.lin@canonical.com> References: <20190514090100.5795-1-po-hsu.lin@canonical.com> X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Michael Ellerman BugLink: https://bugs.launchpad.net/bugs/1813118 This is a test of the ISA 3.0 "copy" instruction. That instruction has an L field, which if set to 1 specifies that "the instruction identifies the beginning of a move group" (pp 858). That's also referred to as "copy first" vs "copy". In ISA 3.0B the copy instruction does not have an L field, and the corresponding bit in the instruction must be set to 1. This test is generating a "copy" instruction, not a "copy first", and so on Power9 (which implements 3.0B), this results in an illegal instruction. So just drop the test entirely. We still have copy_first_unaligned to test the "copy first" behaviour. Signed-off-by: Michael Ellerman Acked-by: Michael Neuling Signed-off-by: Michael Ellerman (cherry picked from commit 83039f22ba2f6aff935a2acbb6bf671374e8317d) Signed-off-by: Po-Hsu Lin --- .../testing/selftests/powerpc/alignment/.gitignore | 1 - tools/testing/selftests/powerpc/alignment/Makefile | 2 +- .../selftests/powerpc/alignment/copy_unaligned.c | 41 ---------------------- 3 files changed, 1 insertion(+), 43 deletions(-) delete mode 100644 tools/testing/selftests/powerpc/alignment/copy_unaligned.c diff --git a/tools/testing/selftests/powerpc/alignment/.gitignore b/tools/testing/selftests/powerpc/alignment/.gitignore index 1d980e3..d1e67541 100644 --- a/tools/testing/selftests/powerpc/alignment/.gitignore +++ b/tools/testing/selftests/powerpc/alignment/.gitignore @@ -1,4 +1,3 @@ -copy_unaligned copy_first_unaligned paste_unaligned paste_last_unaligned diff --git a/tools/testing/selftests/powerpc/alignment/Makefile b/tools/testing/selftests/powerpc/alignment/Makefile index 083a48a..2d09d0e 100644 --- a/tools/testing/selftests/powerpc/alignment/Makefile +++ b/tools/testing/selftests/powerpc/alignment/Makefile @@ -1,4 +1,4 @@ -TEST_GEN_PROGS := copy_unaligned copy_first_unaligned paste_unaligned \ +TEST_GEN_PROGS := copy_first_unaligned paste_unaligned \ paste_last_unaligned alignment_handler include ../../lib.mk diff --git a/tools/testing/selftests/powerpc/alignment/copy_unaligned.c b/tools/testing/selftests/powerpc/alignment/copy_unaligned.c deleted file mode 100644 index 3a4e264..0000000 --- a/tools/testing/selftests/powerpc/alignment/copy_unaligned.c +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Copyright 2016, Chris Smart, IBM Corporation. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * Calls to copy which are not 128-byte aligned should be caught - * and sent a SIGBUS. - * - */ - -#include -#include -#include "utils.h" -#include "instructions.h" -#include "copy_paste_unaligned_common.h" - -unsigned int expected_instruction = PPC_INST_COPY; -unsigned int instruction_mask = 0xfc0007fe; - -int test_copy_unaligned(void) -{ - /* Only run this test on a P9 or later */ - SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00)); - - /* Register our signal handler with SIGBUS */ - setup_signal_handler(); - - /* +1 makes buf unaligned */ - copy(cacheline_buf+1); - - /* We should not get here */ - return 1; -} - -int main(int argc, char *argv[]) -{ - return test_harness(test_copy_unaligned, "test_copy_unaligned"); -}