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SubjectRe: [PATCH v2 5/6] KVM: arm64: Add interface to support VCPU preempted check
Hi Zengruan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kvmarm/next]
[also build test ERROR on kvm/linux-next linus/master v5.5-rc3 next-20191220]
[cannot apply to arm64/for-next/core]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see]

base: next
config: arm64-alldefconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.5.0
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=arm64

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <>

All errors (new ones prefixed by >>):

In file included from include/linux/spinlock.h:89:0,
from include/linux/radix-tree.h:16,
from include/linux/idr.h:15,
from include/linux/kernfs.h:13,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/of.h:17,
from include/linux/irqdomain.h:35,
from include/linux/acpi.h:13,
from include/acpi/apei.h:9,
from include/acpi/ghes.h:5,
from include/linux/arm_sdei.h:8,
from arch/arm64/kernel/asm-offsets.c:10:
arch/arm64/include/asm/spinlock.h: In function 'vcpu_is_preempted':
>> arch/arm64/include/asm/spinlock.h:18:9: error: implicit declaration of function 'pv_vcpu_is_preempted'; did you mean 'vcpu_is_preempted'? [-Werror=implicit-function-declaration]
return pv_vcpu_is_preempted(cpu);
cc1: some warnings being treated as errors
make[2]: *** [arch/arm64/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [sub-make] Error 2
27 real 5 user 7 sys 48.63% cpu make prepare

vim +18 arch/arm64/include/asm/spinlock.h

15 #define vcpu_is_preempted vcpu_is_preempted
16 static inline bool vcpu_is_preempted(long cpu)
17 {
> 18 return pv_vcpu_is_preempted(cpu);
19 }

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation
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