From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: Zhao Liu <zhao1.liu@linux.intel.com>,
Eduardo Habkost <eduardo@habkost.net>,
Marcel Apfelbaum <marcel.apfelbaum@gmail.com>,
Yanan Wang <wangyanan55@huawei.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
Eric Blake <eblake@redhat.com>,
Markus Armbruster <armbru@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org,
Babu Moger <babu.moger@amd.com>,
Xiaoyao Li <xiaoyao.li@intel.com>,
Zhenyu Wang <zhenyu.z.wang@intel.com>,
Zhuocheng Ding <zhuocheng.ding@intel.com>,
Yongwei Ma <yongwei.ma@intel.com>, Zhao Liu <zhao1.liu@intel.com>,
Robert Hoo <robert.hu@linux.intel.com>
Subject: Re: [PATCH v8 08/21] i386/cpu: Consolidate the use of topo_info in cpu_x86_cpuid()
Date: Wed, 7 Feb 2024 06:59:21 +0100 [thread overview]
Message-ID: <9b6555f7-65ce-4efd-a45d-10aacf71446e@linaro.org> (raw)
In-Reply-To: <20240131101350.109512-9-zhao1.liu@linux.intel.com>
On 31/1/24 11:13, Zhao Liu wrote:
> From: Zhao Liu <zhao1.liu@intel.com>
>
> In cpu_x86_cpuid(), there are many variables in representing the cpu
> topology, e.g., topo_info, cs->nr_cores and cs->nr_threads.
>
> Since the names of cs->nr_cores/cs->nr_threads does not accurately
> represent its meaning, the use of cs->nr_cores/cs->nr_threads is prone
> to confusion and mistakes.
>
> And the structure X86CPUTopoInfo names its members clearly, thus the
> variable "topo_info" should be preferred.
>
> In addition, in cpu_x86_cpuid(), to uniformly use the topology variable,
> replace env->dies with topo_info.dies_per_pkg as well.
>
> Suggested-by: Robert Hoo <robert.hu@linux.intel.com>
> Tested-by: Yongwei Ma <yongwei.ma@intel.com>
> Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
> ---
> Changes since v7:
> * Renamed cpus_per_pkg to threads_per_pkg. (Xiaoyao)
> * Dropped Michael/Babu's Acked/Tested tags since the code change.
> * Re-added Yongwei's Tested tag For his re-testing.
> * Added Xiaoyao's Reviewed tag.
>
> Changes since v3:
> * Fixed typo. (Babu)
>
> Changes since v1:
> * Extracted cores_per_socket from the code block and use it as a local
> variable for cpu_x86_cpuid(). (Yanan)
> * Removed vcpus_per_socket variable and use cpus_per_pkg directly.
> (Yanan)
> * Replaced env->dies with topo_info.dies_per_pkg in cpu_x86_cpuid().
> ---
> target/i386/cpu.c | 31 ++++++++++++++++++-------------
> 1 file changed, 18 insertions(+), 13 deletions(-)
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
next prev parent reply other threads:[~2024-02-07 5:59 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-31 10:13 [PATCH v8 00/21] Introduce smp.modules for x86 in QEMU Zhao Liu
2024-01-31 10:13 ` [PATCH v8 01/21] hw/core/machine: Introduce the module as a CPU topology level Zhao Liu
2024-01-31 10:13 ` [PATCH v8 02/21] hw/core/machine: Support modules in -smp Zhao Liu
2024-01-31 10:13 ` [PATCH v8 03/21] hw/core: Introduce module-id as the topology subindex Zhao Liu
2024-01-31 10:13 ` [PATCH v8 04/21] hw/core: Support module-id in numa configuration Zhao Liu
2024-01-31 10:13 ` [PATCH v8 05/21] i386/cpu: Fix i/d-cache topology to core level for Intel CPU Zhao Liu
2024-01-31 10:13 ` [PATCH v8 06/21] i386/cpu: Use APIC ID info to encode cache topo in CPUID[4] Zhao Liu
2024-01-31 10:13 ` [PATCH v8 07/21] i386/cpu: Use APIC ID info get NumSharingCache for CPUID[0x8000001D].EAX[bits 25:14] Zhao Liu
2024-01-31 10:13 ` [PATCH v8 08/21] i386/cpu: Consolidate the use of topo_info in cpu_x86_cpuid() Zhao Liu
2024-02-07 5:59 ` Philippe Mathieu-Daudé [this message]
2024-01-31 10:13 ` [PATCH v8 09/21] i386/cpu: Introduce bitmap to cache available CPU topology levels Zhao Liu
2024-01-31 10:13 ` [PATCH v8 10/21] i386: Split topology types of CPUID[0x1F] from the definitions of CPUID[0xB] Zhao Liu
2024-02-07 6:00 ` Philippe Mathieu-Daudé
2024-01-31 10:13 ` [PATCH v8 11/21] i386/cpu: Decouple CPUID[0x1F] subleaf with specific topology level Zhao Liu
2024-01-31 10:13 ` [PATCH v8 12/21] i386: Introduce module level cpu topology to CPUX86State Zhao Liu
2024-01-31 10:13 ` [PATCH v8 13/21] i386: Support modules_per_die in X86CPUTopoInfo Zhao Liu
2024-01-31 10:13 ` [PATCH v8 14/21] i386: Expose module level in CPUID[0x1F] Zhao Liu
2024-01-31 10:13 ` [PATCH v8 15/21] i386: Support module_id in X86CPUTopoIDs Zhao Liu
2024-01-31 10:13 ` [PATCH v8 16/21] i386/cpu: Introduce module-id to X86CPU Zhao Liu
2024-01-31 10:13 ` [PATCH v8 17/21] tests: Add test case of APIC ID for module level parsing Zhao Liu
2024-01-31 10:13 ` [PATCH v8 18/21] hw/i386/pc: Support smp.modules for x86 PC machine Zhao Liu
2024-01-31 10:13 ` [PATCH v8 19/21] i386: Add cache topology info in CPUCacheInfo Zhao Liu
2024-01-31 10:13 ` [PATCH v8 20/21] i386/cpu: Use CPUCacheInfo.share_level to encode CPUID[4] Zhao Liu
2024-01-31 10:13 ` [PATCH v8 21/21] i386/cpu: Use CPUCacheInfo.share_level to encode CPUID[0x8000001D].EAX[bits 25:14] Zhao Liu
2024-01-31 10:28 ` [PATCH v8 00/21] Introduce smp.modules for x86 in QEMU Daniel P. Berrangé
2024-02-01 2:57 ` Zhao Liu
2024-02-01 9:21 ` Daniel P. Berrangé
2024-02-01 16:10 ` Zhao Liu
2024-02-08 16:52 ` Daniel P. Berrangé
2024-02-15 16:56 ` Zhao Liu
2024-02-21 12:41 ` Markus Armbruster
2024-02-21 15:15 ` Zhao Liu
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