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From: Zhao Liu <zhao1.liu@intel.com>
To: "Daniel P . Berrangé" <berrange@redhat.com>,
	"Igor Mammedov" <imammedo@redhat.com>,
	"Eduardo Habkost" <eduardo@habkost.net>,
	"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"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>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Peter Maydell" <peter.maydell@linaro.org>,
	"Jonathan Cameron" <Jonathan.Cameron@huawei.com>,
	"Sia Jee Heng" <jeeheng.sia@starfivetech.com>,
	"Alireza Sanaee" <alireza.sanaee@huawei.com>
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org,
	qemu-riscv@nongnu.org, qemu-arm@nongnu.org,
	Zhenyu Wang <zhenyu.z.wang@intel.com>,
	Dapeng Mi <dapeng1.mi@linux.intel.com>,
	Zhao Liu <zhao1.liu@intel.com>, Yongwei Ma <yongwei.ma@intel.com>
Subject: [PATCH v3 4/7] i386/cpu: Support thread and module level cache topology
Date: Sat, 12 Oct 2024 18:44:26 +0800	[thread overview]
Message-ID: <20241012104429.1048908-5-zhao1.liu@intel.com> (raw)
In-Reply-To: <20241012104429.1048908-1-zhao1.liu@intel.com>

Allow cache to be defined at the thread and module level. This
increases flexibility for x86 users to customize their cache topology.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 target/i386/cpu.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index c84e32c9c303..202bfe5086be 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -241,9 +241,15 @@ static uint32_t max_thread_ids_for_cache(X86CPUTopoInfo *topo_info,
     uint32_t num_ids = 0;
 
     switch (share_level) {
+    case CPU_TOPOLOGY_LEVEL_THREAD:
+        num_ids = 1;
+        break;
     case CPU_TOPOLOGY_LEVEL_CORE:
         num_ids = 1 << apicid_core_offset(topo_info);
         break;
+    case CPU_TOPOLOGY_LEVEL_MODULE:
+        num_ids = 1 << apicid_module_offset(topo_info);
+        break;
     case CPU_TOPOLOGY_LEVEL_DIE:
         num_ids = 1 << apicid_die_offset(topo_info);
         break;
@@ -251,10 +257,6 @@ static uint32_t max_thread_ids_for_cache(X86CPUTopoInfo *topo_info,
         num_ids = 1 << apicid_pkg_offset(topo_info);
         break;
     default:
-        /*
-         * Currently there is no use case for THREAD and MODULE, so use
-         * assert directly to facilitate debugging.
-         */
         g_assert_not_reached();
     }
 
-- 
2.34.1



  parent reply	other threads:[~2024-10-12 10:30 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-12 10:44 [PATCH v3 0/7] Introduce SMP Cache Topology Zhao Liu
2024-10-12 10:44 ` [PATCH v3 1/7] hw/core: Make CPU topology enumeration arch-agnostic Zhao Liu
     [not found]   ` <20241017095227.00006d85@Huawei.com>
2024-10-17 13:20     ` Jonathan Cameron via
2024-10-17 14:51       ` Zhao Liu
2024-10-17 15:30   ` Daniel P. Berrangé
2024-10-18  2:36     ` Zhao Liu
2024-10-18  7:55       ` Daniel P. Berrangé
2024-10-18  9:01         ` Zhao Liu
2024-10-17 16:19   ` Marcin Juszkiewicz
2024-10-18  4:26     ` Zhao Liu
2024-10-12 10:44 ` [PATCH v3 2/7] qapi/qom: Define cache enumeration and properties for machine Zhao Liu
2024-10-12 10:44 ` [PATCH v3 3/7] hw/core: Check smp cache topology support " Zhao Liu
2024-10-12 10:44 ` Zhao Liu [this message]
2024-10-12 10:44 ` [PATCH v3 5/7] i386/cpu: Update cache topology with machine's configuration Zhao Liu
2024-10-12 10:44 ` [PATCH v3 6/7] i386/pc: Support cache topology in -machine for PC machine Zhao Liu
2024-10-17 15:27   ` Daniel P. Berrangé
2024-10-18  3:57     ` Zhao Liu
2024-10-18  7:58       ` Daniel P. Berrangé
2024-10-18  9:03         ` Zhao Liu
2024-10-12 10:44 ` [PATCH v3 7/7] i386/cpu: add has_caches flag to check smp_cache configuration Zhao Liu
2024-10-17 13:16   ` Jonathan Cameron via
2024-10-17 13:19 ` [PATCH v3 0/7] Introduce SMP Cache Topology Jonathan Cameron via
     [not found] ` <20241017141402.0000135b@Huawei.com>
2024-10-17 15:01   ` Zhao Liu

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