Re: [Qemu-devel] [PATCH] pc: apic: introduce APIC macro

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Sep 15, 2016 at 08:43:33AM +0800, Wanpeng Li wrote:
> From: Wanpeng Li <wanpeng.li@hotmail.com>
> 
> Introduce a new APIC macro to replace APIC_COMMON macro in 
> hw/intc/apic.c in order to capture access LAPIC in qemu 
> even if LAPIC is emulated in kvm.
> 
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Radim Krčmář <rkrcmar@redhat.com>
> Cc: Michael S. Tsirkin <mst@redhat.com>
> Cc: Eduardo Habkost <ehabkost@redhat.com>
> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>


Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

> ---
>  hw/intc/apic.c                  | 20 ++++++++++----------
>  include/hw/i386/apic_internal.h |  4 ++++
>  2 files changed, 14 insertions(+), 10 deletions(-)
> 
> diff --git a/hw/intc/apic.c b/hw/intc/apic.c
> index 45887d9..577f095 100644
> --- a/hw/intc/apic.c
> +++ b/hw/intc/apic.c
> @@ -163,7 +163,7 @@ static void apic_local_deliver(APICCommonState *s, int vector)
>  
>  void apic_deliver_pic_intr(DeviceState *dev, int level)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>  
>      if (level) {
>          apic_local_deliver(s, APIC_LVT_LINT0);
> @@ -373,7 +373,7 @@ static void apic_update_irq(APICCommonState *s)
>  
>  void apic_poll_irq(DeviceState *dev)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>  
>      apic_sync_vapic(s, SYNC_FROM_VAPIC);
>      apic_update_irq(s);
> @@ -479,7 +479,7 @@ static void apic_startup(APICCommonState *s, int vector_num)
>  
>  void apic_sipi(DeviceState *dev)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>  
>      cpu_reset_interrupt(CPU(s->cpu), CPU_INTERRUPT_SIPI);
>  
> @@ -493,7 +493,7 @@ static void apic_deliver(DeviceState *dev, uint8_t dest, uint8_t dest_mode,
>                           uint8_t delivery_mode, uint8_t vector_num,
>                           uint8_t trigger_mode)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>      uint32_t deliver_bitmask[MAX_APIC_WORDS];
>      int dest_shorthand = (s->icr[0] >> 18) & 3;
>      APICCommonState *apic_iter;
> @@ -550,7 +550,7 @@ static bool apic_check_pic(APICCommonState *s)
>  
>  int apic_get_interrupt(DeviceState *dev)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>      int intno;
>  
>      /* if the APIC is installed or enabled, we let the 8259 handle the
> @@ -584,7 +584,7 @@ int apic_get_interrupt(DeviceState *dev)
>  
>  int apic_accept_pic_intr(DeviceState *dev)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>      uint32_t lvt0;
>  
>      if (!s)
> @@ -663,7 +663,7 @@ static uint32_t apic_mem_readl(void *opaque, hwaddr addr)
>      if (!dev) {
>          return 0;
>      }
> -    s = APIC_COMMON(dev);
> +    s = APIC(dev);
>  
>      index = (addr >> 4) & 0xff;
>      switch(index) {
> @@ -766,7 +766,7 @@ static void apic_mem_writel(void *opaque, hwaddr addr, uint32_t val)
>      if (!dev) {
>          return;
>      }
> -    s = APIC_COMMON(dev);
> +    s = APIC(dev);
>  
>      trace_apic_mem_writel(addr, val);
>  
> @@ -870,7 +870,7 @@ static const MemoryRegionOps apic_io_ops = {
>  
>  static void apic_realize(DeviceState *dev, Error **errp)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>  
>      if (s->id >= MAX_APICS) {
>          error_setg(errp, "%s initialization failed. APIC ID %d is invalid",
> @@ -889,7 +889,7 @@ static void apic_realize(DeviceState *dev, Error **errp)
>  
>  static void apic_unrealize(DeviceState *dev, Error **errp)
>  {
> -    APICCommonState *s = APIC_COMMON(dev);
> +    APICCommonState *s = APIC(dev);
>  
>      timer_del(s->timer);
>      timer_free(s->timer);
> diff --git a/include/hw/i386/apic_internal.h b/include/hw/i386/apic_internal.h
> index 06c4e9f..5e36016 100644
> --- a/include/hw/i386/apic_internal.h
> +++ b/include/hw/i386/apic_internal.h
> @@ -131,6 +131,10 @@ typedef struct APICCommonState APICCommonState;
>  #define APIC_COMMON_GET_CLASS(obj) \
>       OBJECT_GET_CLASS(APICCommonClass, (obj), TYPE_APIC_COMMON)
>  
> +#define TYPE_APIC "apic"
> +#define APIC(obj) \
> +    OBJECT_CHECK(APICCommonState, (obj), TYPE_APIC)
> +
>  typedef struct APICCommonClass
>  {
>      DeviceClass parent_class;
> -- 
> 1.9.1