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Tsirkin" , Igor Mammedov , Ani Sinha , Eduardo Habkost , Yanan Wang Cc: Marcel Apfelbaum , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org, Zhenyu Wang , Zhao Liu Subject: [PATCH v3 3/4] hw/smbios: Fix thread count in type4 Date: Tue, 20 Jun 2023 18:39:57 +0800 Message-Id: <20230620103958.3907565-4-zhao1.liu@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230620103958.3907565-1-zhao1.liu@linux.intel.com> References: <20230620103958.3907565-1-zhao1.liu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=134.134.136.31; envelope-from=zhao1.liu@linux.intel.com; helo=mga06.intel.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1687257074179100001 Content-Type: text/plain; charset="utf-8" From: Zhao Liu From SMBIOS 3.0 specification, thread count field means: Thread Count is the total number of threads detected by the BIOS for this processor socket. It is a processor-wide count, not a thread-per-core count. [1] So here we should use threads per socket other than threads per core. [1] SMBIOS 3.0.0, section 7.5.8, Processor Information - Thread Count Fixes: c97294ec1b9e ("SMBIOS: Build aggregate smbios tables and entry point= ") Signed-off-by: Zhao Liu --- v3: * Use the wrapped hepler to get threads per socket. v2: * Rename cpus_per_socket to threads_per_socket. * Add the comment about smp.max_cpus. Thread count and core count will be calculated in 2 ways and will add a sanity check to ensure we don't miss any topology level. --- hw/smbios/smbios.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c index d67415d44dd8..3aae9328c014 100644 --- a/hw/smbios/smbios.c +++ b/hw/smbios/smbios.c @@ -713,6 +713,7 @@ static void smbios_build_type_4_table(MachineState *ms,= unsigned instance) { char sock_str[128]; size_t tbl_len =3D SMBIOS_TYPE_4_LEN_V28; + unsigned threads_per_socket; =20 if (smbios_ep_type =3D=3D SMBIOS_ENTRY_POINT_TYPE_64) { tbl_len =3D SMBIOS_TYPE_4_LEN_V30; @@ -747,17 +748,19 @@ static void smbios_build_type_4_table(MachineState *m= s, unsigned instance) SMBIOS_TABLE_SET_STR(4, asset_tag_number_str, type4.asset); SMBIOS_TABLE_SET_STR(4, part_number_str, type4.part); =20 + threads_per_socket =3D machine_topo_get_threads_per_socket(ms); + t->core_count =3D (ms->smp.cores > 255) ? 0xFF : ms->smp.cores; t->core_enabled =3D t->core_count; =20 - t->thread_count =3D (ms->smp.threads > 255) ? 0xFF : ms->smp.threads; + t->thread_count =3D (threads_per_socket > 255) ? 0xFF : threads_per_so= cket; =20 t->processor_characteristics =3D cpu_to_le16(0x02); /* Unknown */ t->processor_family2 =3D cpu_to_le16(0x01); /* Other */ =20 if (tbl_len =3D=3D SMBIOS_TYPE_4_LEN_V30) { t->core_count2 =3D t->core_enabled2 =3D cpu_to_le16(ms->smp.cores); - t->thread_count2 =3D cpu_to_le16(ms->smp.threads); + t->thread_count2 =3D cpu_to_le16(threads_per_socket); } =20 SMBIOS_BUILD_TABLE_POST; --=20 2.34.1