Re: [kbuild-all] [PATCH v4 13/22] KVM: arm64: ITS: KVM_DEV_ARM_VGIC_GRP_ITS_TABLES group

Auger Eric
2017-03-30T06:44:50Z

Hi Xiaolong

On 30/03/2017 04:21, Ye Xiaolong wrote:
> Hi, Eric
>
> On 03/27, Auger Eric wrote:
>> Hi,
>>
>> On 27/03/2017 17:04, kbuild test robot wrote:
>>> Hi Eric,
>>>
>>> [auto build test ERROR on kvmarm/next]
>>> [also build test ERROR on v4.11-rc4 next-20170327]
>>> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>>>
>>> url: https://github.com/0day-ci/linux/commits/Eric-Auger/vITS-save-restore/20170327-195443
>>> base: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
>>> config: arm64-defconfig (attached as .config)
>>> compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
>>> reproduce:
>>> wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>> chmod +x ~/bin/make.cross
>>> # save the attached .config to linux build tree
>>> make.cross ARCH=arm64
>>>
>>> All errors (new ones prefixed by >>):
>>>
>>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c: In function 'vgic_its_has_attr':
>>>>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c:1766:33: error: 'its' undeclared (first use in this function)
>>> return vgic_its_table_restore(its);
>>
>> I think this is due to the fact the series is applied on KVM: arm/arm64:
>> Emulate the EL1 phys timer registers (kvmarm-for-4.11).
>>
>> Please apply it to (kvmarm/queue, kvmarm/next, kvm_next) KVM: arm/arm64:
>> vgic: Improve sync_hwstate performance (255905e)
>> I also checked it compiles on 4.11-rc4.
>
> Hmm, we did apply your series on top of kvarm/next, judging from the function
> code below, I can't see the 'its' declaration.
>
> static int vgic_its_has_attr(struct kvm_device *dev,
> struct kvm_device_attr *attr)
> {
> switch (attr->group) {
> case KVM_DEV_ARM_VGIC_GRP_ADDR:
> switch (attr->attr) {
> case KVM_VGIC_ITS_ADDR_TYPE:
> return 0;
> }
> break;
> case KVM_DEV_ARM_VGIC_GRP_CTRL:
> switch (attr->attr) {
> case KVM_DEV_ARM_VGIC_CTRL_INIT:
> return 0;
> }
> break;
> case KVM_DEV_ARM_VGIC_GRP_ITS_REGS: {
> u64 __user *uaddr = (u64 __user *)(long)attr->addr;
> u64 reg;
>
> if (get_user(reg, uaddr))
> return -EFAULT;
>
> return vgic_its_attr_regs_access(dev, attr, &reg, true);
> }
> case KVM_DEV_ARM_VGIC_GRP_ITS_TABLES:
> if (attr->attr)
> return -EINVAL;
> return vgic_its_table_restore(its);
The above code shows that my series is not correctly applied since that
call to vgic_its_table_restore() should normally be in
vgic_its_set_attr() and not in vgic_its_has_attr() function
(virt/kvm/arm/vgic-its.c).

I pushed this series applied on top of up to date kvmarm/next at
https://github.com/eauger/linux/tree/v4.11-rc3-its-mig-v4.

As noticed earlier, the series is applied on top of 255905e (KVM:
arm/arm64: vgic: Improve sync_hwstate performance)

Thanks

Eric

> }
> return -ENXIO;
> }
>
> Thanks,
> Xiaolong
>
>>
>> Please let me know if I got something wrong.
>>
>> Thanks
>>
>> Eric
>>> ^~~
>>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c:1766:33: note: each undeclared identifier is reported only once for each function it appears in
>>>
>>> vim +/its +1766 arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c
>>>
>>> 1750 case KVM_DEV_ARM_VGIC_CTRL_INIT:
>>> 1751 return 0;
>>> 1752 }
>>> 1753 break;
>>> 1754 case KVM_DEV_ARM_VGIC_GRP_ITS_REGS: {
>>> 1755 u64 __user *uaddr = (u64 __user *)(long)attr->addr;
>>> 1756 u64 reg;
>>> 1757
>>> 1758 if (get_user(reg, uaddr))
>>> 1759 return -EFAULT;
>>> 1760
>>> 1761 return vgic_its_attr_regs_access(dev, attr, &reg, true);
>>> 1762 }
>>> 1763 case KVM_DEV_ARM_VGIC_GRP_ITS_TABLES:
>>> 1764 if (attr->attr)
>>> 1765 return -EINVAL;
>>>> 1766 return vgic_its_table_restore(its);
>>> 1767 }
>>> 1768 return -ENXIO;
>>> 1769 }
>>> 1770
>>> 1771 static int vgic_its_set_attr(struct kvm_device *dev,
>>> 1772 struct kvm_device_attr *attr)
>>> 1773 {
>>> 1774 struct vgic_its *its = dev->private;
>>>
>>> ---
>>> 0-DAY kernel test infrastructure Open Source Technology Center
>>> https://lists.01.org/pipermail/kbuild-all Intel Corporation
>>>
>>>
>>>
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