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[79.180.2.31]) by smtp.gmail.com with ESMTPSA id m14sm15763480edd.63.2021.03.03.14.08.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Mar 2021 14:08:36 -0800 (PST) Date: Wed, 3 Mar 2021 17:08:32 -0500 From: "Michael S. Tsirkin" To: Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= Cc: qemu-devel@nongnu.org, Claudio Fontana , qemu-arm@nongnu.org, Peter Maydell , Paolo Bonzini , Richard Henderson , qemu-s390x@nongnu.org, Thomas Huth , qemu-ppc@nongnu.org, Laurent Vivier , Cornelia Huck , Alex =?iso-8859-1?Q?Benn=E9e?= , Eduardo Habkost , Marcel Apfelbaum Subject: Re: [PATCH v4 03/28] cpu: Introduce cpu_virtio_is_big_endian() Message-ID: <20210303170743-mutt-send-email-mst@kernel.org> References: <20210303214708.1727801-1-f4bug@amsat.org> <20210303214708.1727801-4-f4bug@amsat.org> MIME-Version: 1.0 In-Reply-To: <20210303214708.1727801-4-f4bug@amsat.org> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit X-TUID: mVv2ih8QuRxm On Wed, Mar 03, 2021 at 10:46:43PM +0100, Philippe Mathieu-Daudé wrote: > Introduce the cpu_virtio_is_big_endian() generic helper to avoid > calling CPUClass internal virtio_is_big_endian() one. > > Signed-off-by: Philippe Mathieu-Daudé Using virtio in the name here probably because virtio wants this? That doesn't sound like a good naming strategy, name should tell us what function does not how it's used. > --- > include/hw/core/cpu.h | 9 +++++++++ > hw/core/cpu.c | 8 ++++++-- > hw/virtio/virtio.c | 4 +--- > 3 files changed, 16 insertions(+), 5 deletions(-) > > diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h > index 2d43f78819f..b12028c3c03 100644 > --- a/include/hw/core/cpu.h > +++ b/include/hw/core/cpu.h > @@ -602,6 +602,15 @@ hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); > */ > int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs); > > +/** > + * cpu_virtio_is_big_endian: > + * @cpu: CPU > + > + * Returns %true if a CPU which supports runtime configurable endianness > + * is currently big-endian. > + */ > +bool cpu_virtio_is_big_endian(CPUState *cpu); > + > #endif /* CONFIG_USER_ONLY */ > > /** > diff --git a/hw/core/cpu.c b/hw/core/cpu.c > index 4dce35f832f..daaff56a79e 100644 > --- a/hw/core/cpu.c > +++ b/hw/core/cpu.c > @@ -218,8 +218,13 @@ static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg) > return 0; > } > > -static bool cpu_common_virtio_is_big_endian(CPUState *cpu) > +bool cpu_virtio_is_big_endian(CPUState *cpu) > { > + CPUClass *cc = CPU_GET_CLASS(cpu); > + > + if (cc->virtio_is_big_endian) { > + return cc->virtio_is_big_endian(cpu); > + } > return target_words_bigendian(); > } > > @@ -438,7 +443,6 @@ static void cpu_class_init(ObjectClass *klass, void *data) > k->write_elf64_note = cpu_common_write_elf64_note; > k->gdb_read_register = cpu_common_gdb_read_register; > k->gdb_write_register = cpu_common_gdb_write_register; > - k->virtio_is_big_endian = cpu_common_virtio_is_big_endian; > set_bit(DEVICE_CATEGORY_CPU, dc->categories); > dc->realize = cpu_common_realizefn; > dc->unrealize = cpu_common_unrealizefn; > diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c > index 1fd1917ca0f..fe6a4be99e4 100644 > --- a/hw/virtio/virtio.c > +++ b/hw/virtio/virtio.c > @@ -1973,9 +1973,7 @@ static enum virtio_device_endian virtio_default_endian(void) > > static enum virtio_device_endian virtio_current_cpu_endian(void) > { > - CPUClass *cc = CPU_GET_CLASS(current_cpu); > - > - if (cc->virtio_is_big_endian(current_cpu)) { > + if (cpu_virtio_is_big_endian(current_cpu)) { > return VIRTIO_DEVICE_ENDIAN_BIG; > } else { > return VIRTIO_DEVICE_ENDIAN_LITTLE; > -- > 2.26.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37A00C433DB for ; Wed, 3 Mar 2021 22:13:36 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 82C0264EE8 for ; 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[79.180.2.31]) by smtp.gmail.com with ESMTPSA id m14sm15763480edd.63.2021.03.03.14.08.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Mar 2021 14:08:36 -0800 (PST) Date: Wed, 3 Mar 2021 17:08:32 -0500 From: "Michael S. Tsirkin" To: Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= Subject: Re: [PATCH v4 03/28] cpu: Introduce cpu_virtio_is_big_endian() Message-ID: <20210303170743-mutt-send-email-mst@kernel.org> References: <20210303214708.1727801-1-f4bug@amsat.org> <20210303214708.1727801-4-f4bug@amsat.org> MIME-Version: 1.0 In-Reply-To: <20210303214708.1727801-4-f4bug@amsat.org> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no 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: Peter Maydell , Thomas Huth , Eduardo Habkost , Cornelia Huck , Richard Henderson , qemu-devel@nongnu.org, Laurent Vivier , qemu-s390x@nongnu.org, qemu-arm@nongnu.org, qemu-ppc@nongnu.org, Claudio Fontana , Paolo Bonzini , Alex =?iso-8859-1?Q?Benn=E9e?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, Mar 03, 2021 at 10:46:43PM +0100, Philippe Mathieu-Daudé wrote: > Introduce the cpu_virtio_is_big_endian() generic helper to avoid > calling CPUClass internal virtio_is_big_endian() one. > > Signed-off-by: Philippe Mathieu-Daudé Using virtio in the name here probably because virtio wants this? That doesn't sound like a good naming strategy, name should tell us what function does not how it's used. > --- > include/hw/core/cpu.h | 9 +++++++++ > hw/core/cpu.c | 8 ++++++-- > hw/virtio/virtio.c | 4 +--- > 3 files changed, 16 insertions(+), 5 deletions(-) > > diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h > index 2d43f78819f..b12028c3c03 100644 > --- a/include/hw/core/cpu.h > +++ b/include/hw/core/cpu.h > @@ -602,6 +602,15 @@ hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); > */ > int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs); > > +/** > + * cpu_virtio_is_big_endian: > + * @cpu: CPU > + > + * Returns %true if a CPU which supports runtime configurable endianness > + * is currently big-endian. > + */ > +bool cpu_virtio_is_big_endian(CPUState *cpu); > + > #endif /* CONFIG_USER_ONLY */ > > /** > diff --git a/hw/core/cpu.c b/hw/core/cpu.c > index 4dce35f832f..daaff56a79e 100644 > --- a/hw/core/cpu.c > +++ b/hw/core/cpu.c > @@ -218,8 +218,13 @@ static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg) > return 0; > } > > -static bool cpu_common_virtio_is_big_endian(CPUState *cpu) > +bool cpu_virtio_is_big_endian(CPUState *cpu) > { > + CPUClass *cc = CPU_GET_CLASS(cpu); > + > + if (cc->virtio_is_big_endian) { > + return cc->virtio_is_big_endian(cpu); > + } > return target_words_bigendian(); > } > > @@ -438,7 +443,6 @@ static void cpu_class_init(ObjectClass *klass, void *data) > k->write_elf64_note = cpu_common_write_elf64_note; > k->gdb_read_register = cpu_common_gdb_read_register; > k->gdb_write_register = cpu_common_gdb_write_register; > - k->virtio_is_big_endian = cpu_common_virtio_is_big_endian; > set_bit(DEVICE_CATEGORY_CPU, dc->categories); > dc->realize = cpu_common_realizefn; > dc->unrealize = cpu_common_unrealizefn; > diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c > index 1fd1917ca0f..fe6a4be99e4 100644 > --- a/hw/virtio/virtio.c > +++ b/hw/virtio/virtio.c > @@ -1973,9 +1973,7 @@ static enum virtio_device_endian virtio_default_endian(void) > > static enum virtio_device_endian virtio_current_cpu_endian(void) > { > - CPUClass *cc = CPU_GET_CLASS(current_cpu); > - > - if (cc->virtio_is_big_endian(current_cpu)) { > + if (cpu_virtio_is_big_endian(current_cpu)) { > return VIRTIO_DEVICE_ENDIAN_BIG; > } else { > return VIRTIO_DEVICE_ENDIAN_LITTLE; > -- > 2.26.2