3:33 a.m.
Hi Marc,
FYI, the error/warning still remains.
tree: https://android.googlesource.com/kernel/common android12-5.10-2021-09
head: 0a07ca4e42c839ccc8cfcfa63078c9cb580c7d3b
commit: b0e15c8c44275afef4aacfb1560e38b974b02ac8 [6733/10851] FROMGIT: KVM: arm64:
Save/restore SVE state for nVHE
config: arm64-buildonly-randconfig-r004-20211004 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
c0039de2953d15815448b4b3c3bafb45607781e0)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
git remote add android-common https://android.googlesource.com/kernel/common
git fetch --no-tags android-common android12-5.10-2021-09
git checkout b0e15c8c44275afef4aacfb1560e38b974b02ac8
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
> arch/arm64/kvm/fpsimd.c:129:5: error: implicit declaration of
function 'sve_cond_update_zcr_vq' [-Werror,-Wimplicit-function-declaration]
sve_cond_update_zcr_vq(vcpu_sve_max_vq(vcpu) - 1,
^
1 error generated.
vim +/sve_cond_update_zcr_vq +129 arch/arm64/kvm/fpsimd.c
108
109 /*
110 * Write back the vcpu FPSIMD regs if they are dirty, and invalidate the
111 * cpu FPSIMD regs so that they can't be spuriously reused if this vcpu
112 * disappears and another task or vcpu appears that recycles the same
113 * struct fpsimd_state.
114 */
115 void kvm_arch_vcpu_put_fp(struct kvm_vcpu *vcpu)
116 {
117 unsigned long flags;
118 bool host_has_sve = system_supports_sve();
119 bool guest_has_sve = vcpu_has_sve(vcpu);
120
121 local_irq_save(flags);
122
123 if (vcpu->arch.flags & KVM_ARM64_FP_ENABLED) {
124 if (guest_has_sve) {
125 __vcpu_sys_reg(vcpu, ZCR_EL1) = read_sysreg_el1(SYS_ZCR);
126
127 /* Restore the VL that was saved when bound to the CPU */
128 if (!has_vhe())
129 sve_cond_update_zcr_vq(vcpu_sve_max_vq(vcpu) - 1,
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org