* [intel-tdx:guest 10/76] arch/x86/include/asm/kvm_para.h:38:10: error: implicit declaration of function 'tdx_kvm_hypercall'; did you mean 'kvm_hypercall0'?
@ 2021-06-15 23:29 kernel test robot
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From: kernel test robot @ 2021-06-15 23:29 UTC (permalink / raw)
To: kbuild-all
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tree: https://github.com/intel/tdx.git guest
head: 224dd4925275ef73ef78f1412d6f9d03564294eb
commit: 65aab3097498af2947a88010cc4354a2cd7edac1 [10/76] x86/tdx: Wire up KVM hypercalls
config: i386-randconfig-r032-20210616 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://github.com/intel/tdx/commit/65aab3097498af2947a88010cc4354a2cd7edac1
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx guest
git checkout 65aab3097498af2947a88010cc4354a2cd7edac1
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from include/uapi/linux/kvm_para.h:36,
from include/linux/kvm_para.h:5,
from drivers/cpuidle/cpuidle-haltpoll.c:18:
arch/x86/include/asm/kvm_para.h: In function 'kvm_hypercall0':
>> arch/x86/include/asm/kvm_para.h:38:10: error: implicit declaration of function 'tdx_kvm_hypercall'; did you mean 'kvm_hypercall0'? [-Werror=implicit-function-declaration]
38 | return tdx_kvm_hypercall(nr, 0, 0, 0, 0);
| ^~~~~~~~~~~~~~~~~
| kvm_hypercall0
cc1: some warnings being treated as errors
--
In file included from include/uapi/linux/kvm_para.h:36,
from include/linux/kvm_para.h:5,
from arch/x86/kernel/kvm.c:16:
arch/x86/include/asm/kvm_para.h: In function 'kvm_hypercall0':
>> arch/x86/include/asm/kvm_para.h:38:10: error: implicit declaration of function 'tdx_kvm_hypercall'; did you mean 'kvm_hypercall0'? [-Werror=implicit-function-declaration]
38 | return tdx_kvm_hypercall(nr, 0, 0, 0, 0);
| ^~~~~~~~~~~~~~~~~
| kvm_hypercall0
arch/x86/kernel/kvm.c: At top level:
arch/x86/kernel/kvm.c:895:16: warning: no previous prototype for '__kvm_vcpu_is_preempted' [-Wmissing-prototypes]
895 | __visible bool __kvm_vcpu_is_preempted(long cpu)
| ^~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +38 arch/x86/include/asm/kvm_para.h
19
20 #define KVM_HYPERCALL \
21 ALTERNATIVE("vmcall", "vmmcall", X86_FEATURE_VMMCALL)
22
23 /* For KVM hypercalls, a three-byte sequence of either the vmcall or the vmmcall
24 * instruction. The hypervisor may replace it with something else but only the
25 * instructions are guaranteed to be supported.
26 *
27 * Up to four arguments may be passed in rbx, rcx, rdx, and rsi respectively.
28 * The hypercall number should be placed in rax and the return value will be
29 * placed in rax. No other registers will be clobbered unless explicitly
30 * noted by the particular hypercall.
31 */
32
33 static inline long kvm_hypercall0(unsigned int nr)
34 {
35 long ret;
36
37 if (prot_guest_has(PR_GUEST_TDX))
> 38 return tdx_kvm_hypercall(nr, 0, 0, 0, 0);
39
40 asm volatile(KVM_HYPERCALL
41 : "=a"(ret)
42 : "a"(nr)
43 : "memory");
44 return ret;
45 }
46
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-06-15 23:29 [intel-tdx:guest 10/76] arch/x86/include/asm/kvm_para.h:38:10: error: implicit declaration of function 'tdx_kvm_hypercall'; did you mean 'kvm_hypercall0'? kernel test robot
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