HidenoriMatsubayashi opened a new pull request, #7295:
URL: https://github.com/apache/incubator-nuttx/pull/7295

   ## Summary
   `Use CONFIG_ARCH_CHIP_QEMU` instead of `CONFIG_ARCH_CHIP_QEMU_A53`. This is 
because these configurations depend on the hardware configuration of qemu 
(memory map, irq numbers, etc.). They independent of CPU core types.
   
   Memory map for qemu virtio:
   https://github.com/qemu/qemu/blob/master/hw/arm/virt.c
   
   ## Impact
   None
   
   ## Testing
   Confirmed that OS booted on qemu for both cortex-a53 and cortex-a72.
   
   ```shell
    qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic -machine 
virt,virtualization=on,gic-version=3 -net none -chardev stdio,id=con,mux=on 
-serial chardev:con -mon chardev=con,mode=readline -kernel ./nuttx
   ```
   
   ```shell
    qemu-system-aarch64 -cpu cortex-a72 -smp 4 -nographic -machine 
virt,virtualization=on,gic-version=3 -net none -chardev stdio,id=con,mux=on 
-serial chardev:con -mon chardev=con,mode=readline -kernel ./nuttx
   ```
   
   Signed-off-by: Hidenori Matsubayashi <hidenori.matsubaya...@gmail.com>
   


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