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[88.21.204.71]) by smtp.gmail.com with ESMTPSA id a15sm9136260wra.86.2020.05.26.00.23.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 May 2020 00:23:07 -0700 (PDT) Subject: Re: [PATCH v3 1/9] target/i386: Restrict X86CPUFeatureWord to X86 targets To: Markus Armbruster References: <20200525150640.30879-1-philmd@redhat.com> <20200525150640.30879-2-philmd@redhat.com> <87o8qb8aab.fsf@dusky.pond.sub.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Autocrypt: addr=philmd@redhat.com; keydata= mQINBDXML8YBEADXCtUkDBKQvNsQA7sDpw6YLE/1tKHwm24A1au9Hfy/OFmkpzo+MD+dYc+7 bvnqWAeGweq2SDq8zbzFZ1gJBd6+e5v1a/UrTxvwBk51yEkadrpRbi+r2bDpTJwXc/uEtYAB GvsTZMtiQVA4kRID1KCdgLa3zztPLCj5H1VZhqZsiGvXa/nMIlhvacRXdbgllPPJ72cLUkXf z1Zu4AkEKpccZaJspmLWGSzGu6UTZ7UfVeR2Hcc2KI9oZB1qthmZ1+PZyGZ/Dy+z+zklC0xl XIpQPmnfy9+/1hj1LzJ+pe3HzEodtlVA+rdttSvA6nmHKIt8Ul6b/h1DFTmUT1lN1WbAGxmg CH1O26cz5nTrzdjoqC/b8PpZiT0kO5MKKgiu5S4PRIxW2+RA4H9nq7nztNZ1Y39bDpzwE5Sp bDHzd5owmLxMLZAINtCtQuRbSOcMjZlg4zohA9TQP9krGIk+qTR+H4CV22sWldSkVtsoTaA2 qNeSJhfHQY0TyQvFbqRsSNIe2gTDzzEQ8itsmdHHE/yzhcCVvlUzXhAT6pIN0OT+cdsTTfif MIcDboys92auTuJ7U+4jWF1+WUaJ8gDL69ThAsu7mGDBbm80P3vvUZ4fQM14NkxOnuGRrJxO qjWNJ2ZUxgyHAh5TCxMLKWZoL5hpnvx3dF3Ti9HW2dsUUWICSQARAQABtDJQaGlsaXBwZSBN YXRoaWV1LURhdWTDqSAoUGhpbCkgPHBoaWxtZEByZWRoYXQuY29tPokCVQQTAQgAPwIbDwYL CQgHAwIGFQgCCQoLBBYCAwECHgECF4AWIQSJweePYB7obIZ0lcuio/1u3q3A3gUCXsfWwAUJ KtymWgAKCRCio/1u3q3A3ircD/9Vjh3aFNJ3uF3hddeoFg1H038wZr/xi8/rX27M1Vj2j9VH 0B8Olp4KUQw/hyO6kUxqkoojmzRpmzvlpZ0cUiZJo2bQIWnvScyHxFCv33kHe+YEIqoJlaQc JfKYlbCoubz+02E2A6bFD9+BvCY0LBbEj5POwyKGiDMjHKCGuzSuDRbCn0Mz4kCa7nFMF5Jv piC+JemRdiBd6102ThqgIsyGEBXuf1sy0QIVyXgaqr9O2b/0VoXpQId7yY7OJuYYxs7kQoXI 6WzSMpmuXGkmfxOgbc/L6YbzB0JOriX0iRClxu4dEUg8Bs2pNnr6huY2Ft+qb41RzCJvvMyu gS32LfN0bTZ6Qm2A8ayMtUQgnwZDSO23OKgQWZVglGliY3ezHZ6lVwC24Vjkmq/2yBSLakZE 6DZUjZzCW1nvtRK05ebyK6tofRsx8xB8pL/kcBb9nCuh70aLR+5cmE41X4O+MVJbwfP5s/RW 9BFSL3qgXuXso/3XuWTQjJJGgKhB6xXjMmb1J4q/h5IuVV4juv1Fem9sfmyrh+Wi5V1IzKI7 RPJ3KVb937eBgSENk53P0gUorwzUcO+ASEo3Z1cBKkJSPigDbeEjVfXQMzNt0oDRzpQqH2vp apo2jHnidWt8BsckuWZpxcZ9+/9obQ55DyVQHGiTN39hkETy3Emdnz1JVHTU0Q== Message-ID: <8590aa71-d8a5-4aa8-3672-e1ccfa96bcbd@redhat.com> Date: Tue, 26 May 2020 09:23:06 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <87o8qb8aab.fsf@dusky.pond.sub.org> Content-Language: en-US X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=philmd@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/26 01:19:28 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-block@nongnu.org, =?UTF-8?Q?Daniel_P=2e_Berrang=c3=a9?= , Eduardo Habkost , Ben Warren , "Michael S. Tsirkin" , Richard Henderson , David Hildenbrand , Peter Lieven , qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , Ronnie Sahlberg , Paolo Bonzini , Igor Mammedov , Max Reitz , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 5/26/20 8:45 AM, Markus Armbruster wrote: > Philippe Mathieu-Daudé writes: > >> Move out x86-specific structures from generic machine code. >> >> Acked-by: Richard Henderson >> Signed-off-by: Philippe Mathieu-Daudé >> --- >> qapi/machine-target.json | 45 ++++++++++++++++++++++++++++++++++++++ >> qapi/machine.json | 42 ----------------------------------- >> target/i386/cpu.c | 2 +- >> target/i386/machine-stub.c | 22 +++++++++++++++++++ >> target/i386/Makefile.objs | 3 ++- >> 5 files changed, 70 insertions(+), 44 deletions(-) >> create mode 100644 target/i386/machine-stub.c >> >> diff --git a/qapi/machine-target.json b/qapi/machine-target.json >> index f2c82949d8..fb7a4b7850 100644 >> --- a/qapi/machine-target.json >> +++ b/qapi/machine-target.json >> @@ -3,6 +3,51 @@ >> # This work is licensed under the terms of the GNU GPL, version 2 or later. >> # See the COPYING file in the top-level directory. >> >> +## >> +# @X86CPURegister32: >> +# >> +# A X86 32-bit register >> +# >> +# Since: 1.5 >> +## >> +{ 'enum': 'X86CPURegister32', >> + 'data': [ 'EAX', 'EBX', 'ECX', 'EDX', 'ESP', 'EBP', 'ESI', 'EDI' ], >> + 'if': 'defined(TARGET_I386)' } >> + >> +## >> +# @X86CPUFeatureWordInfo: >> +# >> +# Information about a X86 CPU feature word >> +# >> +# @cpuid-input-eax: Input EAX value for CPUID instruction for that feature word >> +# >> +# @cpuid-input-ecx: Input ECX value for CPUID instruction for that >> +# feature word >> +# >> +# @cpuid-register: Output register containing the feature bits >> +# >> +# @features: value of output register, containing the feature bits >> +# >> +# Since: 1.5 >> +## >> +{ 'struct': 'X86CPUFeatureWordInfo', >> + 'data': { 'cpuid-input-eax': 'int', >> + '*cpuid-input-ecx': 'int', >> + 'cpuid-register': 'X86CPURegister32', >> + 'features': 'int' }, >> + 'if': 'defined(TARGET_I386)' } >> + >> +## >> +# @DummyForceArrays: >> +# >> +# Not used by QMP; hack to let us use X86CPUFeatureWordInfoList internally >> +# >> +# Since: 2.5 >> +## >> +{ 'struct': 'DummyForceArrays', >> + 'data': { 'unused': ['X86CPUFeatureWordInfo'] }, >> + 'if': 'defined(TARGET_I386)' } >> + >> ## >> # @CpuModelInfo: >> # >> diff --git a/qapi/machine.json b/qapi/machine.json >> index ff7b5032e3..1fe31d374c 100644 >> --- a/qapi/machine.json >> +++ b/qapi/machine.json >> @@ -511,48 +511,6 @@ >> 'dst': 'uint16', >> 'val': 'uint8' }} >> >> -## >> -# @X86CPURegister32: >> -# >> -# A X86 32-bit register >> -# >> -# Since: 1.5 >> -## >> -{ 'enum': 'X86CPURegister32', >> - 'data': [ 'EAX', 'EBX', 'ECX', 'EDX', 'ESP', 'EBP', 'ESI', 'EDI' ] } >> - >> -## >> -# @X86CPUFeatureWordInfo: >> -# >> -# Information about a X86 CPU feature word >> -# >> -# @cpuid-input-eax: Input EAX value for CPUID instruction for that feature word >> -# >> -# @cpuid-input-ecx: Input ECX value for CPUID instruction for that >> -# feature word >> -# >> -# @cpuid-register: Output register containing the feature bits >> -# >> -# @features: value of output register, containing the feature bits >> -# >> -# Since: 1.5 >> -## >> -{ 'struct': 'X86CPUFeatureWordInfo', >> - 'data': { 'cpuid-input-eax': 'int', >> - '*cpuid-input-ecx': 'int', >> - 'cpuid-register': 'X86CPURegister32', >> - 'features': 'int' } } >> - >> -## >> -# @DummyForceArrays: >> -# >> -# Not used by QMP; hack to let us use X86CPUFeatureWordInfoList internally >> -# >> -# Since: 2.5 >> -## >> -{ 'struct': 'DummyForceArrays', >> - 'data': { 'unused': ['X86CPUFeatureWordInfo'] } } >> - >> ## >> # @NumaCpuOptions: >> # >> diff --git a/target/i386/cpu.c b/target/i386/cpu.c >> index 7a4a8e3847..832498c723 100644 >> --- a/target/i386/cpu.c >> +++ b/target/i386/cpu.c >> @@ -37,7 +37,7 @@ >> #include "qemu/option.h" >> #include "qemu/config-file.h" >> #include "qapi/error.h" >> -#include "qapi/qapi-visit-machine.h" >> +#include "qapi/qapi-visit-machine-target.h" >> #include "qapi/qapi-visit-run-state.h" >> #include "qapi/qmp/qdict.h" >> #include "qapi/qmp/qerror.h" >> diff --git a/target/i386/machine-stub.c b/target/i386/machine-stub.c >> new file mode 100644 >> index 0000000000..cb301af057 >> --- /dev/null >> +++ b/target/i386/machine-stub.c >> @@ -0,0 +1,22 @@ >> +/* >> + * QAPI x86 CPU features stub >> + * >> + * Copyright (c) 2020 Red Hat, Inc. >> + * >> + * Author: >> + * Philippe Mathieu-Daudé >> + * >> + * This work is licensed under the terms of the GNU GPL, version 2 or later. >> + * See the COPYING file in the top-level directory. >> + * SPDX-License-Identifier: GPL-2.0-or-later >> + */ >> + >> +#include "qemu/osdep.h" >> +#include "qapi/error.h" >> +#include "qapi/qapi-visit-machine-target.h" >> + >> +void visit_type_X86CPUFeatureWordInfoList(Visitor *v, const char *name, >> + X86CPUFeatureWordInfoList **obj, >> + Error **errp) > > Unusual indentation. > >> +{ >> +} > > Two kinds of stubs: stubs that can get called, and stubs that exist only > to satisfy the linker. Which kind is this one? I suppose "stubs that exist only to satisfy the linker" must abort if ever called... > >> diff --git a/target/i386/Makefile.objs b/target/i386/Makefile.objs >> index 48e0c28434..1cdfc9f50c 100644 >> --- a/target/i386/Makefile.objs >> +++ b/target/i386/Makefile.objs >> @@ -17,6 +17,7 @@ obj-$(CONFIG_HAX) += hax-all.o hax-mem.o hax-posix.o >> endif >> obj-$(CONFIG_HVF) += hvf/ >> obj-$(CONFIG_WHPX) += whpx-all.o >> -endif >> +endif # CONFIG_SOFTMMU >> obj-$(CONFIG_SEV) += sev.o >> obj-$(call lnot,$(CONFIG_SEV)) += sev-stub.o >> +obj-$(call lnot,$(CONFIG_SOFTMMU)) += machine-stub.o > > Suggest > > ifeq ($(CONFIG_SOFTMMU),y) > ... > else > obj-y += machine-stub.o > endif > > Matter of taste. > OK