Re: [Qemu-devel] [PATCH 02/10] qtest: add support for -M pc

["Andreas Färber" <afaerber@suse.de>]

Am 25.02.2012 22:12, schrieb Anthony Liguori:
> On 02/25/2012 02:19 PM, Paolo Bonzini wrote:
>> On 02/25/2012 08:42 PM, Anthony Liguori wrote:
>>> This involves replacing the local APIC with the qtest interrupt
>>> controller.
>>>
>>> It should be pretty straight forward to do the same for other machine
>>> types.
>>>
>>> Signed-off-by: Anthony Liguori<aliguori@us.ibm.com>
>>> ---
>>>   hw/pc_piix.c |    3 +++
>>>   1 files changed, 3 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/hw/pc_piix.c b/hw/pc_piix.c
>>> index 5e11d15..2c0881e 100644
>>> --- a/hw/pc_piix.c
>>> +++ b/hw/pc_piix.c
>>> @@ -46,6 +46,7 @@
>>>   #ifdef CONFIG_XEN
>>>   #  include<xen/hvm/hvm_info_table.h>
>>>   #endif
>>> +#include "qtest.h"
>>>
>>>   #define MAX_IDE_BUS 2
>>>
>>> @@ -212,6 +213,8 @@ static void pc_init1(MemoryRegion *system_memory,
>>>           i8259 = kvm_i8259_init(isa_bus);
>>>       } else if (xen_enabled()) {
>>>           i8259 = xen_interrupt_controller_init();
>>> +    } else if (qtest_enabled()) {
>>> +        i8259 = qtest_interrupt_controller_init();
>>>       } else {
>>>           cpu_irq = pc_allocate_cpu_irq();
>>>           i8259 = i8259_init(isa_bus, cpu_irq[0]);
>>
>> This is not needed anymore.
> 
> Why?  This is necessary for IRQ to work.
> 
> You mean, if you use irq_intercept, this isn't needed?

The reason for Paolo's RFC was to _avoid_ having to touch every target
with code such as the above, no?

Andreas

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