5a37392411
Added the SPDX license identifiers for biosbits tests. Also added a comment on each of the test scripts to indicate that they run from within the biosbits environment and hence are not subjected to the regular maintenance activities for QEMU and is excluded from the dependency management challenges in the host testing environment. Cc: Daniel P. Berrangé <berrange@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Maydell Peter <peter.maydell@linaro.org> Cc: John Snow <jsnow@redhat.com> Cc: Thomas Huth <thuth@redhat.com> Cc: Alex Bennée <alex.bennee@linaro.org> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Michael Tsirkin <mst@redhat.com> Cc: Thomas Huth <thuth@redhat.com> Cc: qemu-trivial@nongnu.org Signed-off-by: Ani Sinha <ani@anisinha.ca> Message-Id: <20221125044138.962137-1-ani@anisinha.ca> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
88 lines
4.1 KiB
Plaintext
88 lines
4.1 KiB
Plaintext
# Copyright (c) 2012, Intel Corporation
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# All rights reserved.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# * Neither the name of Intel Corporation nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# This script runs only from the biosbits VM.
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"""Tests and helpers for CPUID."""
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import bits
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import testsuite
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import testutil
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def cpuid_helper(function, index=None, shift=0, mask=~0, eax_mask=~0, ebx_mask=~0, ecx_mask=~0, edx_mask=~0):
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if index is None:
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index = 0
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indexdesc = ""
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else:
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indexdesc = " index {0:#x}".format(index)
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def find_mask(m):
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if m == ~0:
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return mask
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return m
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masks = map(find_mask, [eax_mask, ebx_mask, ecx_mask, edx_mask])
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uniques = {}
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for cpu in bits.cpus():
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regs = bits.cpuid_result(*[(r >> shift) & m for r, m in zip(bits.cpuid(cpu, function, index), masks)])
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uniques.setdefault(regs, []).append(cpu)
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desc = ["CPUID function {:#x}{}".format(function, indexdesc)]
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if shift != 0:
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desc.append("Register values have been shifted by {}".format(shift))
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if mask != ~0 or eax_mask != ~0 or ebx_mask != ~0 or ecx_mask != ~0 or edx_mask != ~0:
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desc.append("Register values have been masked:")
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shifted_masks = bits.cpuid_result(*[m << shift for m in masks])
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desc.append("Masks: eax={eax:#010x} ebx={ebx:#010x} ecx={ecx:#010x} edx={edx:#010x}".format(**shifted_masks._asdict()))
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if len(uniques) > 1:
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regvalues = zip(*uniques.iterkeys())
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common_masks = bits.cpuid_result(*map(testutil.find_common_mask, regvalues))
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common_values = bits.cpuid_result(*[v[0] & m for v, m in zip(regvalues, common_masks)])
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desc.append('Register values are not unique across all logical processors')
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desc.append("Common bits: eax={eax:#010x} ebx={ebx:#010x} ecx={ecx:#010x} edx={edx:#010x}".format(**common_values._asdict()))
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desc.append("Mask of common bits: {eax:#010x} {ebx:#010x} {ecx:#010x} {edx:#010x}".format(**common_masks._asdict()))
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for regs in sorted(uniques.iterkeys()):
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cpus = uniques[regs]
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desc.append("Register value: eax={eax:#010x} ebx={ebx:#010x} ecx={ecx:#010x} edx={edx:#010x}".format(**regs._asdict()))
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desc.append("On {0} CPUs: {1}".format(len(cpus), testutil.apicid_list(cpus)))
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return uniques, desc
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def test_cpuid_consistency(text, function, index=None, shift=0, mask=~0, eax_mask=~0, ebx_mask=~0, ecx_mask=~0, edx_mask=~0):
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uniques, desc = cpuid_helper(function, index, shift, mask, eax_mask, ebx_mask, ecx_mask, edx_mask)
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desc[0] += " Consistency Check"
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if text:
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desc.insert(0, text)
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status = testsuite.test(desc[0], len(uniques) == 1)
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for line in desc[1:]:
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testsuite.print_detail(line)
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return status
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