lkml.org 
[lkml]   [2019]   [Dec]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
SubjectRe: [PATCH v2 5/6] KVM: arm64: Add interface to support VCPU preempted check
From
Date
Hi,

On 2019/12/27 2:51, kbuild test robot wrote:
> 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 https://stackoverflow.com/a/37406982]
>
> url: https://github.com/0day-ci/linux/commits/Zengruan-Ye/KVM-arm64-VCPU-preempted-check-support/20191227-000637
> base: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
> config: arm64-alldefconfig (attached as .config)
> compiler: aarch64-linux-gcc (GCC) 7.5.0
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -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 <lkp@intel.com>
>
> 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);
> ^~~~~~~~~~~~~~~~~~~~
> vcpu_is_preempted
> 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
>
> 14
> 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 }
> 20
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
>

Thanks for posting this, I'll update the code to fix this issue.

Thanks,

Zengruan


---
arch/arm64/include/asm/spinlock.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm64/include/asm/spinlock.h b/arch/arm64/include/asm/spinlock.h
index 45ff1b2949a6..b5d1982414c5 100644
--- a/arch/arm64/include/asm/spinlock.h
+++ b/arch/arm64/include/asm/spinlock.h
@@ -12,10 +12,12 @@
/* See include/linux/spinlock.h */
#define smp_mb__after_spinlock() smp_mb()

+#ifdef CONFIG_PARAVIRT
#define vcpu_is_preempted vcpu_is_preempted
static inline bool vcpu_is_preempted(long cpu)
{
return pv_vcpu_is_preempted(cpu);
}
+#endif // CONFIG_PARAVIRT

#endif /* __ASM_SPINLOCK_H */
--
2.19.1



\
 
 \ /
  Last update: 2019-12-27 07:53    [W:0.039 / U:3.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site