Hi Marc,
On 06/10/2015 06:21 PM, Marc Zyngier wrote:
> On 05/06/15 09:37, Andre Przywara wrote:
>> Extend the vGIC handling code to potentially deal with different IRQ
>> chip devices instead of hard-coding the GICv2 in.
>> We extend most vGIC functions to take a type parameter, but still put
>> GICv2 in at the top for the time being.
>>
>> Signed-off-by: Andre Przywara <[email protected]>
...
>> @@ -26,21 +26,37 @@ static int gic__create_device(struct kvm *kvm)
>> };
>> struct kvm_device_attr dist_attr = {
>> .group = KVM_DEV_ARM_VGIC_GRP_ADDR,
>> - .attr = KVM_VGIC_V2_ADDR_TYPE_DIST,
>> .addr = (u64)(unsigned long)&dist_addr,
>> };
>>
>> + switch (type) {
>> + case IRQCHIP_GICV2:
>> + gic_device.type = KVM_DEV_TYPE_ARM_VGIC_V2;
>> + break;
>> + default:
>> + return -ENODEV;
>> + }
>> +
>> err = ioctl(kvm->vm_fd, KVM_CREATE_DEVICE, &gic_device);
>> if (err)
>> return err;
>>
>> gic_fd = gic_device.fd;
>>
>> - err = ioctl(gic_fd, KVM_SET_DEVICE_ATTR, &cpu_if_attr);
>> + switch (type) {
>> + case IRQCHIP_GICV2:
>> + dist_attr.attr = KVM_VGIC_V2_ADDR_TYPE_DIST;
>
> You could move the structure patching in the first switch statement.
>
>> + err = ioctl(gic_fd, KVM_SET_DEVICE_ATTR, &cpu_if_attr);
>> + break;
>> + default:
>> + return -ENODEV;
>
> This default cannot be reached, as you've already caught the weird stuff
> above.
Tell that the compiler, not me ;-)
Will check if dropping IRQCHIP_DEFAULT will appease the compiler.
....
>> @@ -131,15 +156,26 @@ static int gic__init_gic(struct kvm *kvm)
>> }
>> late_init(gic__init_gic)
>>
>> -void gic__generate_fdt_nodes(void *fdt, u32 phandle)
>> +void gic__generate_fdt_nodes(void *fdt, u32 phandle, enum irqchip_type type)
>> {
>> + const char *compatible;
>> u64 reg_prop[] = {
>> - cpu_to_fdt64(ARM_GIC_DIST_BASE),
>> cpu_to_fdt64(ARM_GIC_DIST_SIZE),
>> - cpu_to_fdt64(ARM_GIC_CPUI_BASE),
>> cpu_to_fdt64(ARM_GIC_CPUI_SIZE),
>> + cpu_to_fdt64(ARM_GIC_DIST_BASE),
>> + cpu_to_fdt64(ARM_GIC_DIST_SIZE),
>> + cpu_to_fdt64(ARM_GIC_CPUI_BASE),
>> + cpu_to_fdt64(ARM_GIC_CPUI_SIZE),
>> };
>
> Any particular reason for this change? I found the original more readable...
80 characters. I will revert this.
Fixed the rest.
Thanks!
Andre.
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