From 9527e7bde5b59005ddb2d902973915b81b4c5b2c Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Mon, 25 Jul 2016 11:59:24 +0200 Subject: [PATCH] Revert "pc: Enforce adding CPUs contiguously and removing them in opposite order" This reverts commit 4da7faaeb0c7dd3f7f233165d336c878f78fd1eb. Since commit: pc: init CPUState->cpu_index with index in possible_cpus[] cpu_index is stable regardless of the order cpus were created and QEMU instance stays migratable always so limitation added by 4da7faaeb could be safely removed. Signed-off-by: Igor Mammedov Reviewed-by: Michael S. Tsirkin Signed-off-by: Eduardo Habkost --- hw/i386/pc.c | 34 ---------------------------------- 1 file changed, 34 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index d6f034757f..47593b741a 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1818,23 +1818,6 @@ static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, goto out; } - if (idx < pcms->possible_cpus->len - 1 && - pcms->possible_cpus->cpus[idx + 1].cpu != NULL) { - X86CPU *cpu; - - for (idx = pcms->possible_cpus->len - 1; - pcms->possible_cpus->cpus[idx].cpu == NULL; idx--) { - ;; - } - - cpu = X86_CPU(pcms->possible_cpus->cpus[idx].cpu); - error_setg(&local_err, "CPU [socket-id: %u, core-id: %u," - " thread-id: %u] should be removed first", - cpu->socket_id, cpu->core_id, cpu->thread_id); - goto out; - - } - hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); @@ -1932,23 +1915,6 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, return; } - if (idx != 0 && pcms->possible_cpus->cpus[idx - 1].cpu == NULL) { - PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); - - for (idx = 1; pcms->possible_cpus->cpus[idx].cpu != NULL; idx++) { - ;; - } - - x86_topo_ids_from_apicid(pcms->possible_cpus->cpus[idx].arch_id, - smp_cores, smp_threads, &topo); - - if (!pcmc->legacy_cpu_hotplug) { - error_setg(errp, "CPU [socket: %u, core: %u, thread: %u] should be" - " added first", topo.pkg_id, topo.core_id, topo.smt_id); - return; - } - } - /* if 'address' properties socket-id/core-id/thread-id are not set, set them * so that query_hotpluggable_cpus would show correct values */