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qemu/hw-arm-virt-Factor-out-some-CPU-init-codes-to-pre_pl.patch
Chen Qun 714d5e6ecc hw/arm/virt: Factor out some CPU init codes to pre_plug hook 
The init path of hotplugged CPU is pre_plug/realize/plug, so we
must move these init code in machvirt_init to pre_plug hook, to
let them be shared by all CPUs.

Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
(cherry picked from commit 3587e6e0654962090fdfbae30485c0355f1a9faf)
2022-03-19 14:42:32 +08:00

262 lines
9.8 KiB
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From 7838609e9a7743af03c58ae46afd26070b2feea6 Mon Sep 17 00:00:00 2001
From: Keqian Zhu <zhukeqian1@huawei.com>
Date: Mon, 6 Apr 2020 12:50:54 +0800
Subject: [PATCH] hw/arm/virt: Factor out some CPU init codes to pre_plug hook
The init path of hotplugged CPU is pre_plug/realize/plug, so we
must move these init code in machvirt_init to pre_plug hook, to
let them be shared by all CPUs.
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
hw/arm/virt.c | 197 ++++++++++++++++++++++++++------------------------
1 file changed, 103 insertions(+), 94 deletions(-)
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index a12e718686..149e0245d7 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -213,6 +213,10 @@ static const char *valid_cpus[] = {
ARM_CPU_TYPE_NAME("max"),
};
+static MemoryRegion *secure_sysmem;
+static MemoryRegion *tag_sysmem;
+static MemoryRegion *secure_tag_sysmem;
+
static bool cpu_type_valid(const char *cpu)
{
int i;
@@ -1990,9 +1994,6 @@ static void machvirt_init(MachineState *machine)
MachineClass *mc = MACHINE_GET_CLASS(machine);
const CPUArchIdList *possible_cpus;
MemoryRegion *sysmem = get_system_memory();
- MemoryRegion *secure_sysmem = NULL;
- MemoryRegion *tag_sysmem = NULL;
- MemoryRegion *secure_tag_sysmem = NULL;
int n, virt_max_cpus;
bool firmware_loaded;
bool aarch64 = true;
@@ -2099,100 +2100,11 @@ static void machvirt_init(MachineState *machine)
}
cpuobj = object_new(possible_cpus->cpus[n].type);
- object_property_set_int(cpuobj, "mp-affinity",
- possible_cpus->cpus[n].arch_id, NULL);
+ aarch64 &= object_property_get_bool(cpuobj, "aarch64", NULL);
cs = CPU(cpuobj);
cs->cpu_index = n;
- numa_cpu_pre_plug(&possible_cpus->cpus[cs->cpu_index], DEVICE(cpuobj),
- &error_fatal);
-
- aarch64 &= object_property_get_bool(cpuobj, "aarch64", NULL);
-
- if (!vms->secure) {
- object_property_set_bool(cpuobj, "has_el3", false, NULL);
- }
-
- if (!vms->virt && object_property_find(cpuobj, "has_el2")) {
- object_property_set_bool(cpuobj, "has_el2", false, NULL);
- }
-
- if (vms->psci_conduit != QEMU_PSCI_CONDUIT_DISABLED) {
- object_property_set_int(cpuobj, "psci-conduit", vms->psci_conduit,
- NULL);
-
- /* Secondary CPUs start in PSCI powered-down state */
- if (n > 0) {
- object_property_set_bool(cpuobj, "start-powered-off", true,
- NULL);
- }
- }
-
- if (vmc->kvm_no_adjvtime &&
- object_property_find(cpuobj, "kvm-no-adjvtime")) {
- object_property_set_bool(cpuobj, "kvm-no-adjvtime", true, NULL);
- }
-
- if (vmc->no_kvm_steal_time &&
- object_property_find(cpuobj, "kvm-steal-time")) {
- object_property_set_bool(cpuobj, "kvm-steal-time", false, NULL);
- }
-
- if (vmc->no_pmu && object_property_find(cpuobj, "pmu")) {
- object_property_set_bool(cpuobj, "pmu", false, NULL);
- }
-
- if (object_property_find(cpuobj, "reset-cbar")) {
- object_property_set_int(cpuobj, "reset-cbar",
- vms->memmap[VIRT_CPUPERIPHS].base,
- &error_abort);
- }
-
- object_property_set_link(cpuobj, "memory", OBJECT(sysmem),
- &error_abort);
- if (vms->secure) {
- object_property_set_link(cpuobj, "secure-memory",
- OBJECT(secure_sysmem), &error_abort);
- }
-
- if (vms->mte) {
- /* Create the memory region only once, but link to all cpus. */
- if (!tag_sysmem) {
- /*
- * The property exists only if MemTag is supported.
- * If it is, we must allocate the ram to back that up.
- */
- if (!object_property_find(cpuobj, "tag-memory")) {
- error_report("MTE requested, but not supported "
- "by the guest CPU");
- exit(1);
- }
-
- tag_sysmem = g_new(MemoryRegion, 1);
- memory_region_init(tag_sysmem, OBJECT(machine),
- "tag-memory", UINT64_MAX / 32);
-
- if (vms->secure) {
- secure_tag_sysmem = g_new(MemoryRegion, 1);
- memory_region_init(secure_tag_sysmem, OBJECT(machine),
- "secure-tag-memory", UINT64_MAX / 32);
-
- /* As with ram, secure-tag takes precedence over tag. */
- memory_region_add_subregion_overlap(secure_tag_sysmem, 0,
- tag_sysmem, -1);
- }
- }
-
- object_property_set_link(cpuobj, "tag-memory", OBJECT(tag_sysmem),
- &error_abort);
- if (vms->secure) {
- object_property_set_link(cpuobj, "secure-tag-memory",
- OBJECT(secure_tag_sysmem),
- &error_abort);
- }
- }
-
qdev_realize(DEVICE(cpuobj), NULL, &error_fatal);
object_unref(cpuobj);
}
@@ -2600,10 +2512,16 @@ static void virt_memory_plug(HotplugHandler *hotplug_dev,
static void virt_cpu_pre_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
- CPUState *cs = CPU(dev);
ARMCPUTopoInfo topo;
+ Object *cpuobj = OBJECT(dev);
+ CPUState *cs = CPU(dev);
ARMCPU *cpu = ARM_CPU(dev);
MachineState *ms = MACHINE(hotplug_dev);
+ MachineClass *mc = MACHINE_GET_CLASS(hotplug_dev);
+ VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
+ VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(hotplug_dev);
+ const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms);
+ MemoryRegion *sysmem = get_system_memory();
int smp_clusters = ms->smp.clusters;
int smp_cores = ms->smp.cores;
int smp_threads = ms->smp.threads;
@@ -2673,6 +2591,97 @@ static void virt_cpu_pre_plug(HotplugHandler *hotplug_dev,
return;
}
cpu->thread_id = topo.smt_id;
+
+ /* Init some properties */
+
+ object_property_set_int(cpuobj, "mp-affinity",
+ possible_cpus->cpus[cs->cpu_index].arch_id, NULL);
+
+ numa_cpu_pre_plug(&possible_cpus->cpus[cs->cpu_index], DEVICE(cpuobj),
+ &error_fatal);
+
+ if (!vms->secure) {
+ object_property_set_bool(cpuobj, "has_el3", false, NULL);
+ }
+
+ if (!vms->virt && object_property_find(cpuobj, "has_el2")) {
+ object_property_set_bool(cpuobj, "has_el2", false, NULL);
+ }
+
+ if (vms->psci_conduit != QEMU_PSCI_CONDUIT_DISABLED) {
+ object_property_set_int(cpuobj, "psci-conduit", vms->psci_conduit,
+ NULL);
+
+ /* Secondary CPUs start in PSCI powered-down state */
+ if (cs->cpu_index > 0) {
+ object_property_set_bool(cpuobj, "start-powered-off", true,
+ NULL);
+ }
+ }
+
+ if (vmc->kvm_no_adjvtime &&
+ object_property_find(cpuobj, "kvm-no-adjvtime")) {
+ object_property_set_bool(cpuobj, "kvm-no-adjvtime", true, NULL);
+ }
+
+ if (vmc->no_kvm_steal_time &&
+ object_property_find(cpuobj, "kvm-steal-time")) {
+ object_property_set_bool(cpuobj, "kvm-steal-time", false, NULL);
+ }
+
+ if (vmc->no_pmu && object_property_find(cpuobj, "pmu")) {
+ object_property_set_bool(cpuobj, "pmu", false, NULL);
+ }
+
+ if (object_property_find(cpuobj, "reset-cbar")) {
+ object_property_set_int(cpuobj, "reset-cbar",
+ vms->memmap[VIRT_CPUPERIPHS].base,
+ &error_abort);
+ }
+
+ object_property_set_link(cpuobj, "memory", OBJECT(sysmem),
+ &error_abort);
+ if (vms->secure) {
+ object_property_set_link(cpuobj, "secure-memory",
+ OBJECT(secure_sysmem), &error_abort);
+ }
+
+ if (vms->mte) {
+ /* Create the memory region only once, but link to all cpus. */
+ if (!tag_sysmem) {
+ /*
+ * The property exists only if MemTag is supported.
+ * If it is, we must allocate the ram to back that up.
+ */
+ if (!object_property_find(cpuobj, "tag-memory")) {
+ error_report("MTE requested, but not supported "
+ "by the guest CPU");
+ exit(1);
+ }
+
+ tag_sysmem = g_new(MemoryRegion, 1);
+ memory_region_init(tag_sysmem, OBJECT(ms),
+ "tag-memory", UINT64_MAX / 32);
+
+ if (vms->secure) {
+ secure_tag_sysmem = g_new(MemoryRegion, 1);
+ memory_region_init(secure_tag_sysmem, OBJECT(ms),
+ "secure-tag-memory", UINT64_MAX / 32);
+
+ /* As with ram, secure-tag takes precedence over tag. */
+ memory_region_add_subregion_overlap(secure_tag_sysmem, 0,
+ tag_sysmem, -1);
+ }
+ }
+
+ object_property_set_link(cpuobj, "tag-memory", OBJECT(tag_sysmem),
+ &error_abort);
+ if (vms->secure) {
+ object_property_set_link(cpuobj, "secure-tag-memory",
+ OBJECT(secure_tag_sysmem),
+ &error_abort);
+ }
+ }
}
static void virt_cpu_plug(HotplugHandler *hotplug_dev,
--
2.27.0
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