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selftests/powerpc: Remove Power9 copy_unaligned test
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 <mpe@ellerman.id.au> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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3 changed files with 1 additions and 43 deletions
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@ -1,4 +1,3 @@
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copy_unaligned
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copy_first_unaligned
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paste_unaligned
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paste_last_unaligned
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@ -1,4 +1,4 @@
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TEST_GEN_PROGS := copy_unaligned copy_first_unaligned paste_unaligned \
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TEST_GEN_PROGS := copy_first_unaligned paste_unaligned \
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paste_last_unaligned alignment_handler
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include ../../lib.mk
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@ -1,41 +0,0 @@
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/*
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* Copyright 2016, Chris Smart, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Calls to copy which are not 128-byte aligned should be caught
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* and sent a SIGBUS.
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*
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*/
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#include <string.h>
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#include <unistd.h>
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#include "utils.h"
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#include "instructions.h"
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#include "copy_paste_unaligned_common.h"
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unsigned int expected_instruction = PPC_INST_COPY;
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unsigned int instruction_mask = 0xfc0007fe;
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int test_copy_unaligned(void)
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{
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/* Only run this test on a P9 or later */
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SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00));
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/* Register our signal handler with SIGBUS */
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setup_signal_handler();
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/* +1 makes buf unaligned */
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copy(cacheline_buf+1);
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/* We should not get here */
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return 1;
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}
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int main(int argc, char *argv[])
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{
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return test_harness(test_copy_unaligned, "test_copy_unaligned");
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}
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