Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging

x86 queue, 2020-10-15

Cleanups:
* Drop x86_cpu_get_supported_feature_word() forward declaration
  (Vitaly Kuznetsov)
* Delete kvm_allows_irq0_override() (Eduardo Habkost)
* Correct documentation of kvm_irqchip_*() (Eduardo Habkost)
* Fix FEATURE_HYPERV_EDX value in hyperv_passthrough case (Zhenyu Wang)

Deprecation:
* CPU model deprecation API (Robert Hoo)
* Mark Icelake-Client CPU models deprecated (Robert Hoo)

Bug fixes:
* Remove core_id assert check in CPUID 0x8000001E (Babu Moger)

# gpg: Signature made Thu 15 Oct 2020 17:43:58 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-next-pull-request:
  i386: Mark Icelake-Client CPU models deprecated
  cpu: Introduce CPU model deprecation API
  kvm: Correct documentation of kvm_irqchip_*()
  i386/kvm: Delete kvm_allows_irq0_override()
  i386/kvm: Remove IRQ routing support checks
  i386/kvm: Require KVM_CAP_IRQ_ROUTING
  target/i386: Remove core_id assert check in CPUID 0x8000001E
  i386/kvm: fix FEATURE_HYPERV_EDX value in hyperv_passthrough case
  i386: drop x86_cpu_get_supported_feature_word() forward declaration

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

6 files changed, 31 insertions, 25 deletions

diff --git a/hw/core/machine.c b/hw/core/machine.c
index 7e2f4ec08e..d740a7e963 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -1087,6 +1087,8 @@ MemoryRegion *machine_consume_memdev(MachineState *machine,
 void machine_run_board_init(MachineState *machine)
 {
     MachineClass *machine_class = MACHINE_GET_CLASS(machine);
+    ObjectClass *oc = object_class_by_name(machine->cpu_type);
+    CPUClass *cc;
 
     if (machine->ram_memdev_id) {
         Object *o;
@@ -1106,11 +1108,10 @@ void machine_run_board_init(MachineState *machine)
      * specified a CPU with -cpu check here that the user CPU is supported.
      */
     if (machine_class->valid_cpu_types && machine->cpu_type) {
-        ObjectClass *class = object_class_by_name(machine->cpu_type);
         int i;
 
         for (i = 0; machine_class->valid_cpu_types[i]; i++) {
-            if (object_class_dynamic_cast(class,
+            if (object_class_dynamic_cast(oc,
                                           machine_class->valid_cpu_types[i])) {
                 /* The user specificed CPU is in the valid field, we are
                  * good to go.
@@ -1133,6 +1134,13 @@ void machine_run_board_init(MachineState *machine)
         }
     }
 
+    /* Check if CPU type is deprecated and warn if so */
+    cc = CPU_CLASS(oc);
+    if (cc && cc->deprecation_note) {
+        warn_report("CPU model %s is deprecated -- %s", machine->cpu_type,
+                    cc->deprecation_note);
+    }
+
     machine_class->init(machine);
 }
 
diff --git a/hw/i386/fw_cfg.c b/hw/i386/fw_cfg.c
index 33441ad484..e06579490c 100644
--- a/hw/i386/fw_cfg.c
+++ b/hw/i386/fw_cfg.c
@@ -123,7 +123,7 @@ FWCfgState *fw_cfg_arch_create(MachineState *ms,
     fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES,
                      acpi_tables, acpi_tables_len);
 #endif
-    fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, kvm_allows_irq0_override());
+    fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, 1);
 
     fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE,
                      &e820_reserve, sizeof(e820_reserve));
diff --git a/hw/i386/kvm/apic.c b/hw/i386/kvm/apic.c
index 4eb2d77b87..dd29906061 100644
--- a/hw/i386/kvm/apic.c
+++ b/hw/i386/kvm/apic.c
@@ -225,9 +225,8 @@ static void kvm_apic_realize(DeviceState *dev, Error **errp)
     memory_region_init_io(&s->io_memory, OBJECT(s), &kvm_apic_io_ops, s,
                           "kvm-apic-msi", APIC_SPACE_SIZE);
 
-    if (kvm_has_gsi_routing()) {
-        msi_nonbroken = true;
-    }
+    assert(kvm_has_gsi_routing());
+    msi_nonbroken = true;
 }
 
 static void kvm_apic_unrealize(DeviceState *dev)
diff --git a/hw/i386/kvm/ioapic.c b/hw/i386/kvm/ioapic.c
index c5528df942..dfc3c98005 100644
--- a/hw/i386/kvm/ioapic.c
+++ b/hw/i386/kvm/ioapic.c
@@ -25,27 +25,26 @@ void kvm_pc_setup_irq_routing(bool pci_enabled)
     KVMState *s = kvm_state;
     int i;
 
-    if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
-        for (i = 0; i < 8; ++i) {
-            if (i == 2) {
-                continue;
-            }
-            kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_MASTER, i);
-        }
-        for (i = 8; i < 16; ++i) {
-            kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);
+    assert(kvm_has_gsi_routing());
+    for (i = 0; i < 8; ++i) {
+        if (i == 2) {
+            continue;
         }
-        if (pci_enabled) {
-            for (i = 0; i < 24; ++i) {
-                if (i == 0) {
-                    kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, 2);
-                } else if (i != 2) {
-                    kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, i);
-                }
+        kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_MASTER, i);
+    }
+    for (i = 8; i < 16; ++i) {
+        kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);
+    }
+    if (pci_enabled) {
+        for (i = 0; i < 24; ++i) {
+            if (i == 0) {
+                kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, 2);
+            } else if (i != 2) {
+                kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, i);
             }
         }
-        kvm_irqchip_commit_routes(s);
     }
+    kvm_irqchip_commit_routes(s);
 }
 
 typedef struct KVMIOAPICState KVMIOAPICState;
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index 73a7a142b4..68a7f424ac 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -290,7 +290,7 @@ static void microvm_memory_init(MicrovmMachineState *mms)
     fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, machine->smp.cpus);
     fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, machine->smp.max_cpus);
     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size);
-    fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, kvm_allows_irq0_override());
+    fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, 1);
     fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE,
                      &e820_reserve, sizeof(e820_reserve));
     fw_cfg_add_file(fw_cfg, "etc/e820", e820_table,
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index e87be5d29a..4e323755d0 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -827,7 +827,7 @@ void pc_guest_info_init(PCMachineState *pcms)
     MachineState *ms = MACHINE(pcms);
     X86MachineState *x86ms = X86_MACHINE(pcms);
 
-    x86ms->apic_xrupt_override = kvm_allows_irq0_override();
+    x86ms->apic_xrupt_override = true;
     pcms->numa_nodes = ms->numa_state->num_nodes;
     pcms->node_mem = g_malloc0(pcms->numa_nodes *
                                     sizeof *pcms->node_mem);