tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git queue head: f2d1aab22d57235b58db391d318727d3e5ef1e89 commit: 61d47b5d95db9a4ce12c50ffaa6918a40619984f [13/29] KVM: arm64: Save host SVE context as appropriate config: arm-axm55xx_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 61d47b5d95db9a4ce12c50ffaa6918a40619984f # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_ioctl_run': arch/arm/kvm/../../../virt/kvm/arm/arm.c:785:3: error: implicit declaration of function 'kvm_arch_vcpu_ctxsync_fp'; did you mean 'kvm_arch_vcpu_put_fp'? [-Werror=implicit-function-declaration] kvm_arch_vcpu_ctxsync_fp(vcpu); ^~~~~~~~~~~~~~~~~~~~~~~~ kvm_arch_vcpu_put_fp arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init': >> arch/arm/kvm/../../../virt/kvm/arm/arm.c:1598:6: error: implicit declaration of function 'system_supports_sve' [-Werror=implicit-function-declaration] if (system_supports_sve() && !has_vhe()) { ^~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/system_supports_sve +1598 arch/arm/kvm/../../../virt/kvm/arm/arm.c 1564 1565 /** 1566 * Initialize Hyp-mode and memory mappings on all CPUs. 1567 */ 1568 int kvm_arch_init(void *opaque) 1569 { 1570 int err; 1571 int ret, cpu; 1572 bool in_hyp_mode; 1573 1574 if (!is_hyp_mode_available()) { 1575 kvm_info("HYP mode not available\n"); 1576 return -ENODEV; 1577 } 1578 1579 for_each_online_cpu(cpu) { 1580 smp_call_function_single(cpu, check_kvm_target_cpu, &ret, 1); 1581 if (ret < 0) { 1582 kvm_err("Error, CPU %d not supported!\n", cpu); 1583 return -ENODEV; 1584 } 1585 } 1586 1587 /* 1588 * VHE is a prerequisite for SVE in the Arm architecture, and 1589 * Kconfig ensures that if system_supports_sve() here then 1590 * CONFIG_ARM64_VHE is enabled, so if VHE support wasn't already 1591 * detected and enabled, the CPU is architecturally 1592 * noncompliant. 1593 * 1594 * Just in case this mismatch is seen, detect it, warn and give 1595 * up. Supporting this forbidden configuration in Hyp would be 1596 * pointless. 1597 */ > 1598 if (system_supports_sve() && !has_vhe()) { 1599 kvm_pr_unimpl("SVE system without VHE unsupported. Broken cpu?"); 1600 return -ENODEV; 1601 } 1602 1603 err = init_common_resources(); 1604 if (err) 1605 return err; 1606 1607 in_hyp_mode = is_kernel_in_hyp_mode(); 1608 1609 if (!in_hyp_mode) { 1610 err = init_hyp_mode(); 1611 if (err) 1612 goto out_err; 1613 } 1614 1615 err = init_subsystems(); 1616 if (err) 1617 goto out_hyp; 1618 1619 if (in_hyp_mode) 1620 kvm_info("VHE mode initialized successfully\n"); 1621 else 1622 kvm_info("Hyp mode initialized successfully\n"); 1623 1624 return 0; 1625 1626 out_hyp: 1627 if (!in_hyp_mode) 1628 teardown_hyp_mode(); 1629 out_err: 1630 return err; 1631 } 1632 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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