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From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Chinmay Rath" <rathc@linux.ibm.com>,
	"Harsh Prateek Bora" <harshpb@linux.ibm.com>,
	qemu-ppc@nongnu.org, "Paolo Bonzini" <pbonzini@redhat.com>,
	kvm@vger.kernel.org, "Nicholas Piggin" <npiggin@gmail.com>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>
Subject: [PATCH 15/18] hw/ppc/spapr: Remove SpaprMachineClass::smp_threads_vsmt field
Date: Mon, 20 Oct 2025 13:35:18 +0200	[thread overview]
Message-ID: <20251020113521.81495-2-philmd@linaro.org> (raw)
In-Reply-To: <20251020103815.78415-1-philmd@linaro.org>

The SpaprMachineClass::smp_threads_vsmt field was only used by the
pseries-4.1 machine, which got removed. Remove it as now unused.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/ppc/spapr.h |  1 -
 hw/ppc/spapr.c         | 11 -----------
 2 files changed, 12 deletions(-)

diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 82f556f97e1..1629baf12ac 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -144,7 +144,6 @@ struct SpaprMachineClass {
 
     /*< public >*/
     bool linux_pci_probe;
-    bool smp_threads_vsmt; /* set VSMT to smp_threads by default */
     hwaddr rma_limit;          /* clamp the RMA to this size */
     bool pre_5_1_assoc_refpoints;
     bool pre_5_2_numa_associativity;
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 546e100c9cd..c8558e47db2 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2588,7 +2588,6 @@ static CPUArchId *spapr_find_cpu_slot(MachineState *ms, uint32_t id, int *idx)
 static void spapr_set_vsmt_mode(SpaprMachineState *spapr, Error **errp)
 {
     MachineState *ms = MACHINE(spapr);
-    SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr);
     Error *local_err = NULL;
     bool vsmt_user = !!spapr->vsmt;
     int kvm_smt = kvmppc_smt_threads();
@@ -2624,15 +2623,6 @@ static void spapr_set_vsmt_mode(SpaprMachineState *spapr, Error **errp)
             return;
         }
         /* In this case, spapr->vsmt has been set by the command line */
-    } else if (!smc->smp_threads_vsmt) {
-        /*
-         * Default VSMT value is tricky, because we need it to be as
-         * consistent as possible (for migration), but this requires
-         * changing it for at least some existing cases.  We pick 8 as
-         * the value that we'd get with KVM on POWER8, the
-         * overwhelmingly common case in production systems.
-         */
-        spapr->vsmt = MAX(8, smp_threads);
     } else {
         spapr->vsmt = smp_threads;
     }
@@ -4649,7 +4639,6 @@ static void spapr_machine_class_init(ObjectClass *oc, const void *data)
     spapr_caps_add_properties(smc);
     smc->irq = &spapr_irq_dual;
     smc->linux_pci_probe = true;
-    smc->smp_threads_vsmt = true;
     xfc->match_nvt = spapr_match_nvt;
     vmc->client_architecture_support = spapr_vof_client_architecture_support;
     vmc->quiesce = spapr_vof_quiesce;
-- 
2.51.0



  parent reply	other threads:[~2025-10-20 11:36 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-20 10:37 [PATCH 00/18] hw/ppc/spapr: Remove deprecated pseries-3.0 -> pseries-4.2 machines Philippe Mathieu-Daudé
2025-10-20 10:37 ` [PATCH 01/18] hw/ppc/spapr: Remove deprecated pseries-3.0 machine Philippe Mathieu-Daudé
2025-10-20 10:37 ` [PATCH 02/18] hw/ppc/spapr: Remove SpaprMachineClass::spapr_irq_xics_legacy field Philippe Mathieu-Daudé
2025-10-20 10:37 ` [PATCH 03/18] hw/ppc/spapr: Remove SpaprMachineClass::legacy_irq_allocation field Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 04/18] hw/ppc/spapr: Remove SpaprMachineClass::nr_xirqs field Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 05/18] hw/ppc/spapr: Remove deprecated pseries-3.1 machine Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 06/18] hw/ppc/spapr: Remove SpaprMachineClass::broken_host_serial_model field Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 07/18] target/ppc/kvm: Remove kvmppc_get_host_serial() as unused Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 08/18] target/ppc/kvm: Remove kvmppc_get_host_model() " Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 09/18] hw/ppc/spapr: Remove SpaprMachineClass::dr_phb_enabled field Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 10/18] hw/ppc/spapr: Remove SpaprMachineClass::update_dt_enabled field Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 11/18] hw/ppc/spapr: Remove deprecated pseries-4.0 machine Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 12/18] hw/ppc/spapr: Remove SpaprMachineClass::pre_4_1_migration field Philippe Mathieu-Daudé
2025-10-20 10:38 ` [PATCH 13/18] hw/ppc/spapr: Remove SpaprMachineClass::phb_placement callback Philippe Mathieu-Daudé
2025-10-20 11:35 ` [PATCH 14/18] hw/ppc/spapr: Remove deprecated pseries-4.1 machine Philippe Mathieu-Daudé
2025-10-20 11:35 ` Philippe Mathieu-Daudé [this message]
2025-10-20 11:35 ` [PATCH 16/18] hw/ppc/spapr: Remove SpaprMachineClass::linux_pci_probe field Philippe Mathieu-Daudé
2025-10-20 11:35 ` [PATCH 17/18] hw/ppc/spapr: Remove deprecated pseries-4.2 machine Philippe Mathieu-Daudé
2025-10-20 11:35 ` [PATCH 18/18] hw/ppc/spapr: Remove SpaprMachineClass::rma_limit field Philippe Mathieu-Daudé
2025-10-21  4:54 ` [PATCH 00/18] hw/ppc/spapr: Remove deprecated pseries-3.0 -> pseries-4.2 machines Harsh Prateek Bora
2025-10-21  6:31   ` Cédric Le Goater
2025-10-21  7:46     ` Philippe Mathieu-Daudé
2025-10-21  8:34       ` Harsh Prateek Bora
2025-10-21  8:41         ` Philippe Mathieu-Daudé

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