Re: [PATCH v2 1/6] hw/i386/x86: Let ioapic_init_gsi() take parent as pointer

[Zhao Liu <zhao1.liu@intel.com>]

On Sat, Feb 24, 2024 at 02:58:46PM +0100, Bernhard Beschow wrote:
> Date: Sat, 24 Feb 2024 14:58:46 +0100
> From: Bernhard Beschow <shentey@gmail.com>
> Subject: [PATCH v2 1/6] hw/i386/x86: Let ioapic_init_gsi() take parent as
>  pointer
> X-Mailer: git-send-email 2.44.0
> 
> Rather than taking a QOM name which has to be resolved, let's pass the parent
> directly as pointer. This simplifies the code.
> 
> Signed-off-by: Bernhard Beschow <shentey@gmail.com>
> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> ---
>  include/hw/i386/x86.h | 2 +-
>  hw/i386/microvm.c     | 2 +-
>  hw/i386/pc_piix.c     | 7 +++----
>  hw/i386/pc_q35.c      | 2 +-
>  hw/i386/x86.c         | 7 +++----
>  5 files changed, 9 insertions(+), 11 deletions(-)

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>

> 
> diff --git a/include/hw/i386/x86.h b/include/hw/i386/x86.h
> index 8e306db7bb..4dc30dcb4d 100644
> --- a/include/hw/i386/x86.h
> +++ b/include/hw/i386/x86.h
> @@ -139,7 +139,7 @@ typedef struct GSIState {
>  
>  qemu_irq x86_allocate_cpu_irq(void);
>  void gsi_handler(void *opaque, int n, int level);
> -void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name);
> +void ioapic_init_gsi(GSIState *gsi_state, Object *parent);
>  DeviceState *ioapic_init_secondary(GSIState *gsi_state);
>  
>  /* pc_sysfw.c */
> diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
> index ca55aecc3b..61a772dfe6 100644
> --- a/hw/i386/microvm.c
> +++ b/hw/i386/microvm.c
> @@ -175,7 +175,7 @@ static void microvm_devices_init(MicrovmMachineState *mms)
>                            &error_abort);
>      isa_bus_register_input_irqs(isa_bus, x86ms->gsi);
>  
> -    ioapic_init_gsi(gsi_state, "machine");
> +    ioapic_init_gsi(gsi_state, OBJECT(mms));
>      if (ioapics > 1) {
>          x86ms->ioapic2 = ioapic_init_secondary(gsi_state);
>      }
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index ec7c07b362..7724396ead 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -107,6 +107,7 @@ static void pc_init1(MachineState *machine,
>      X86MachineState *x86ms = X86_MACHINE(machine);
>      MemoryRegion *system_memory = get_system_memory();
>      MemoryRegion *system_io = get_system_io();
> +    Object *phb = NULL;
>      PCIBus *pci_bus = NULL;
>      ISABus *isa_bus;
>      Object *piix4_pm = NULL;
> @@ -189,8 +190,6 @@ static void pc_init1(MachineState *machine,
>      }
>  
>      if (pcmc->pci_enabled) {
> -        Object *phb;
> -
>          pci_memory = g_new(MemoryRegion, 1);
>          memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
>          rom_memory = pci_memory;
> @@ -303,8 +302,8 @@ static void pc_init1(MachineState *machine,
>          pc_i8259_create(isa_bus, gsi_state->i8259_irq);
>      }
>  
> -    if (pcmc->pci_enabled) {
> -        ioapic_init_gsi(gsi_state, "i440fx");
> +    if (phb) {
> +        ioapic_init_gsi(gsi_state, phb);
>      }
>  
>      if (tcg_enabled()) {
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index 53fb3db26d..c89ff63579 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -263,7 +263,7 @@ static void pc_q35_init(MachineState *machine)
>          pc_i8259_create(isa_bus, gsi_state->i8259_irq);
>      }
>  
> -    ioapic_init_gsi(gsi_state, "q35");
> +    ioapic_init_gsi(gsi_state, OBJECT(phb));
>  
>      if (tcg_enabled()) {
>          x86_register_ferr_irq(x86ms->gsi[13]);
> diff --git a/hw/i386/x86.c b/hw/i386/x86.c
> index 684dce90e9..807e09bcdb 100644
> --- a/hw/i386/x86.c
> +++ b/hw/i386/x86.c
> @@ -640,20 +640,19 @@ void gsi_handler(void *opaque, int n, int level)
>      }
>  }
>  
> -void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name)
> +void ioapic_init_gsi(GSIState *gsi_state, Object *parent)
>  {
>      DeviceState *dev;
>      SysBusDevice *d;
>      unsigned int i;
>  
> -    assert(parent_name);
> +    assert(parent);
>      if (kvm_ioapic_in_kernel()) {
>          dev = qdev_new(TYPE_KVM_IOAPIC);
>      } else {
>          dev = qdev_new(TYPE_IOAPIC);
>      }
> -    object_property_add_child(object_resolve_path(parent_name, NULL),
> -                              "ioapic", OBJECT(dev));
> +    object_property_add_child(parent, "ioapic", OBJECT(dev));
>      d = SYS_BUS_DEVICE(dev);
>      sysbus_realize_and_unref(d, &error_fatal);
>      sysbus_mmio_map(d, 0, IO_APIC_DEFAULT_ADDRESS);
> -- 
> 2.44.0
> 
>