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X-CSE-ConnectionGUID: sWtabI9dSTKvcu6cQXlzvQ== X-CSE-MsgGUID: Yj0fJNimQr+EsQY0ERUgnQ== X-IronPort-AV: E=McAfee;i="6600,9927,11085"; a="23884800" X-IronPort-AV: E=Sophos;i="6.08,197,1712646000"; d="scan'208";a="23884800" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2024 19:03:53 -0700 X-CSE-ConnectionGUID: 8zQvKHOCTtCCBBNp8GvJWA== X-CSE-MsgGUID: QT1MLi6vSrWY3LiXDUsOHA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,197,1712646000"; d="scan'208";a="35208168" Received: from unknown (HELO 0610945e7d16) ([10.239.97.151]) by fmviesa007.fm.intel.com with ESMTP; 28 May 2024 19:03:52 -0700 Received: from kbuild by 0610945e7d16 with local (Exim 4.96) (envelope-from ) id 1sC8fN-000Czr-29; Wed, 29 May 2024 02:03:49 +0000 Date: Wed, 29 May 2024 10:03:38 +0800 From: kernel test robot To: cros-kernel-buildreports@googlegroups.com Cc: oe-kbuild-all@lists.linux.dev Subject: [android-common:android15-6.6-2024-06-exp 10073/13266] drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c:797:5: warning: no previous prototype for 'kvm_arm_smmu_suspend' Message-ID: <202405290919.9UUZOF1T-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://android.googlesource.com/kernel/common android15-6.6-2024-06-exp head: 55abd4e47b51cc21408819285768808fbd2384ac commit: aea998ed10e7eb8357e2902a1c5e0b58154c2e96 [10073/13266] ANDROID: KVM: arm64: Remove HYP_SPIN_LOCK from generated code config: arm64-randconfig-r054-20240529 (https://download.01.org/0day-ci/archive/20240529/202405290919.9UUZOF1T-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240529/202405290919.9UUZOF1T-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202405290919.9UUZOF1T-lkp@intel.com/ All warnings (new ones prefixed by >>): cc1: warning: arch/arm64/kvm/: No such file or directory [-Wmissing-include-dirs] drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c: In function 'kvm_arm_smmu_domain_free': drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c:210:13: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 210 | int ret; | ^~~ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c: At top level: >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c:797:5: warning: no previous prototype for 'kvm_arm_smmu_suspend' [-Wmissing-prototypes] 797 | int kvm_arm_smmu_suspend(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~ >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c:807:5: warning: no previous prototype for 'kvm_arm_smmu_resume' [-Wmissing-prototypes] 807 | int kvm_arm_smmu_resume(struct device *dev) | ^~~~~~~~~~~~~~~~~~~ >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c:865:5: warning: no previous prototype for 'smmu_put_device' [-Wmissing-prototypes] 865 | int smmu_put_device(struct device *dev, void *data) | ^~~~~~~~~~~~~~~ >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c:922:15: warning: no previous prototype for 'kvm_arm_smmu_v3_id' [-Wmissing-prototypes] 922 | pkvm_handle_t kvm_arm_smmu_v3_id(struct device *dev) | ^~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for USB_PHY Depends on [n]: USB_SUPPORT [=n] Selected by [y]: - GKI_HIDDEN_USB_CONFIGS [=y] WARNING: unmet direct dependencies detected for PAGE_POOL Depends on [n]: NET [=n] Selected by [y]: - GKI_HIDDEN_NET_CONFIGS [=y] WARNING: unmet direct dependencies detected for WEXT_PRIV Depends on [n]: NET [=n] && WIRELESS [=n] Selected by [y]: - GKI_LEGACY_WEXT_ALLCONFIG [=y] WARNING: unmet direct dependencies detected for BALLOON_COMPACTION Depends on [n]: COMPACTION [=n] && MEMORY_BALLOON [=y] Selected by [y]: - GKI_HIDDEN_MM_CONFIGS [=y] WARNING: unmet direct dependencies detected for NET_DEVLINK Depends on [n]: NET [=n] Selected by [y]: - GKI_HIDDEN_NET_CONFIGS [=y] WARNING: unmet direct dependencies detected for WEXT_SPY Depends on [n]: NET [=n] && WIRELESS [=n] Selected by [y]: - GKI_LEGACY_WEXT_ALLCONFIG [=y] WARNING: unmet direct dependencies detected for PHYLINK Depends on [n]: NETDEVICES [=n] Selected by [y]: - GKI_HIDDEN_ETHERNET_CONFIGS [=y] WARNING: unmet direct dependencies detected for DRM_MIPI_DSI Depends on [n]: HAS_IOMEM [=y] && DRM [=n] Selected by [y]: - GKI_HIDDEN_DRM_CONFIGS [=y] WARNING: unmet direct dependencies detected for WIRELESS_EXT Depends on [n]: NET [=n] && WIRELESS [=n] Selected by [y]: - GKI_LEGACY_WEXT_ALLCONFIG [=y] WARNING: unmet direct dependencies detected for WEXT_CORE Depends on [n]: NET [=n] && WIRELESS [=n] && (CFG80211_WEXT [=n] || WIRELESS_EXT [=y]) Selected by [y]: - GKI_LEGACY_WEXT_ALLCONFIG [=y] WARNING: unmet direct dependencies detected for NET_PTP_CLASSIFY Depends on [n]: NET [=n] Selected by [y]: - GKI_HIDDEN_NET_CONFIGS [=y] WARNING: unmet direct dependencies detected for VIDEO_V4L2_SUBDEV_API Depends on [n]: MEDIA_SUPPORT [=y] && VIDEO_DEV [=n] && MEDIA_CONTROLLER [=y] Selected by [y]: - GKI_HIDDEN_MEDIA_CONFIGS [=y] WARNING: unmet direct dependencies detected for CAN_RX_OFFLOAD Depends on [n]: NETDEVICES [=n] && CAN_DEV [=n] && CAN_NETLINK [=n] Selected by [y]: - GKI_HIDDEN_MCP251XFD_CONFIGS [=y] WARNING: unmet direct dependencies detected for WEXT_PROC Depends on [n]: NET [=n] && WIRELESS [=n] && PROC_FS [=y] && WEXT_CORE [=y] Selected by [y]: - GKI_LEGACY_WEXT_ALLCONFIG [=y] vim +/kvm_arm_smmu_suspend +797 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-kvm.c d4519820851b1d Jean-Philippe Brucker 2022-02-09 796 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 @797 int kvm_arm_smmu_suspend(struct device *dev) 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 798 { 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 799 struct arm_smmu_device *smmu = dev_get_drvdata(dev); 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 800 struct host_arm_smmu_device *host_smmu = smmu_to_host(smmu); 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 801 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 802 if (host_smmu->hvc_pd) 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 803 return pkvm_iommu_suspend(dev); 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 804 return 0; 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 805 } 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 806 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 @807 int kvm_arm_smmu_resume(struct device *dev) 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 808 { 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 809 struct arm_smmu_device *smmu = dev_get_drvdata(dev); 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 810 struct host_arm_smmu_device *host_smmu = smmu_to_host(smmu); 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 811 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 812 if (host_smmu->hvc_pd) 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 813 return pkvm_iommu_resume(dev); 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 814 return 0; 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 815 } 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 816 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 817 static const struct dev_pm_ops kvm_arm_smmu_pm_ops = { 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 818 SET_RUNTIME_PM_OPS(kvm_arm_smmu_suspend, kvm_arm_smmu_resume, NULL) 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 819 }; 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 820 d4519820851b1d Jean-Philippe Brucker 2022-02-09 821 static const struct of_device_id arm_smmu_of_match[] = { d4519820851b1d Jean-Philippe Brucker 2022-02-09 822 { .compatible = "arm,smmu-v3", }, d4519820851b1d Jean-Philippe Brucker 2022-02-09 823 { }, d4519820851b1d Jean-Philippe Brucker 2022-02-09 824 }; d4519820851b1d Jean-Philippe Brucker 2022-02-09 825 d4519820851b1d Jean-Philippe Brucker 2022-02-09 826 static struct platform_driver kvm_arm_smmu_driver = { d4519820851b1d Jean-Philippe Brucker 2022-02-09 827 .driver = { d4519820851b1d Jean-Philippe Brucker 2022-02-09 828 .name = "kvm-arm-smmu-v3", d4519820851b1d Jean-Philippe Brucker 2022-02-09 829 .of_match_table = arm_smmu_of_match, 94d1b3e12c9636 Jean-Philippe Brucker 2022-10-11 830 .pm = &kvm_arm_smmu_pm_ops, d4519820851b1d Jean-Philippe Brucker 2022-02-09 831 }, d4519820851b1d Jean-Philippe Brucker 2022-02-09 832 .remove = kvm_arm_smmu_remove, d4519820851b1d Jean-Philippe Brucker 2022-02-09 833 }; d4519820851b1d Jean-Philippe Brucker 2022-02-09 834 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 835 static int kvm_arm_smmu_array_alloc(void) 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 836 { be3195fe7b08b0 Mostafa Saleh 2023-10-17 837 int smmu_order; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 838 struct device_node *np; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 839 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 840 kvm_arm_smmu_count = 0; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 841 for_each_compatible_node(np, NULL, "arm,smmu-v3") 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 842 kvm_arm_smmu_count++; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 843 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 844 if (!kvm_arm_smmu_count) 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 845 return 0; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 846 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 847 /* Allocate the parameter list shared with the hypervisor */ 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 848 smmu_order = get_order(kvm_arm_smmu_count * sizeof(*kvm_arm_smmu_array)); 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 849 kvm_arm_smmu_array = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 850 smmu_order); 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 851 if (!kvm_arm_smmu_array) 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 852 return -ENOMEM; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 853 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 854 return 0; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 855 } 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 856 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 857 static void kvm_arm_smmu_array_free(void) 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 858 { 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 859 int order; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 860 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 861 order = get_order(kvm_arm_smmu_count * sizeof(*kvm_arm_smmu_array)); 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 862 free_pages((unsigned long)kvm_arm_smmu_array, order); 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 863 } 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 864 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 @865 int smmu_put_device(struct device *dev, void *data) 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 866 { 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 867 pm_runtime_put_noidle(dev); 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 868 return 0; 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 869 } 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 870 d4519820851b1d Jean-Philippe Brucker 2022-02-09 871 /** d4519820851b1d Jean-Philippe Brucker 2022-02-09 872 * kvm_arm_smmu_v3_init() - Reserve the SMMUv3 for KVM d4519820851b1d Jean-Philippe Brucker 2022-02-09 873 * Return 0 if all present SMMUv3 were probed successfully, or an error. d4519820851b1d Jean-Philippe Brucker 2022-02-09 874 * If no SMMU was found, return 0, with a count of 0. d4519820851b1d Jean-Philippe Brucker 2022-02-09 875 */ 5d6af2ce0093f6 Mostafa Saleh 2023-05-01 876 static int kvm_arm_smmu_v3_init(void) d4519820851b1d Jean-Philippe Brucker 2022-02-09 877 { d4519820851b1d Jean-Philippe Brucker 2022-02-09 878 int ret; d4519820851b1d Jean-Philippe Brucker 2022-02-09 879 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 880 /* 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 881 * Check whether any device owned by the host is behind an SMMU. 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 882 */ 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 883 ret = kvm_arm_smmu_array_alloc(); 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 884 if (ret || !kvm_arm_smmu_count) 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 885 return ret; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 886 d4519820851b1d Jean-Philippe Brucker 2022-02-09 887 ret = platform_driver_probe(&kvm_arm_smmu_driver, kvm_arm_smmu_probe); d4519820851b1d Jean-Philippe Brucker 2022-02-09 888 if (ret) 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 889 goto err_free; d4519820851b1d Jean-Philippe Brucker 2022-02-09 890 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 891 if (kvm_arm_smmu_cur != kvm_arm_smmu_count) { 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 892 /* A device exists but failed to probe */ 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 893 ret = -EUNATCH; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 894 goto err_free; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 895 } 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 896 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 897 /* 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 898 * These variables are stored in the nVHE image, and won't be accessible 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 899 * after KVM initialization. Ownership of kvm_arm_smmu_array will be 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 900 * transferred to the hypervisor as well. f6758993ba0dc8 Jean-Philippe Brucker 2022-11-23 901 * f6758993ba0dc8 Jean-Philippe Brucker 2022-11-23 902 * kvm_arm_smmu_memcache is shared between hypervisor and host. 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 903 */ 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 904 kvm_hyp_arm_smmu_v3_smmus = kvm_arm_smmu_array; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 905 kvm_hyp_arm_smmu_v3_count = kvm_arm_smmu_count; bb65953ff665bb David Brazdil 2023-08-09 906 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 907 ret = kvm_iommu_init_hyp(kern_hyp_va(lm_alias(&kvm_nvhe_sym(smmu_ops))), 0); 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 908 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 909 WARN_ON(driver_for_each_device(&kvm_arm_smmu_driver.driver, NULL, 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 910 NULL, smmu_put_device)); 842ddd77ef926e Jean-Philippe Brucker 2022-10-10 911 return ret; 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 912 err_free: 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 913 kvm_arm_smmu_array_free(); 58d165ce27ff4b Jean-Philippe Brucker 2022-02-09 914 return ret; d4519820851b1d Jean-Philippe Brucker 2022-02-09 915 } d4519820851b1d Jean-Philippe Brucker 2022-02-09 916 5d6af2ce0093f6 Mostafa Saleh 2023-05-01 917 static void kvm_arm_smmu_v3_remove(void) d4519820851b1d Jean-Philippe Brucker 2022-02-09 918 { d4519820851b1d Jean-Philippe Brucker 2022-02-09 919 platform_driver_unregister(&kvm_arm_smmu_driver); d4519820851b1d Jean-Philippe Brucker 2022-02-09 920 } 5d6af2ce0093f6 Mostafa Saleh 2023-05-01 921 9d5e57d93b40eb Mostafa Saleh 2023-08-19 @922 pkvm_handle_t kvm_arm_smmu_v3_id(struct device *dev) 9d5e57d93b40eb Mostafa Saleh 2023-08-19 923 { 9d5e57d93b40eb Mostafa Saleh 2023-08-19 924 struct arm_smmu_device *smmu = dev_get_drvdata(dev); 9d5e57d93b40eb Mostafa Saleh 2023-08-19 925 struct host_arm_smmu_device *host_smmu = smmu_to_host(smmu); 9d5e57d93b40eb Mostafa Saleh 2023-08-19 926 9d5e57d93b40eb Mostafa Saleh 2023-08-19 927 return host_smmu->id; 9d5e57d93b40eb Mostafa Saleh 2023-08-19 928 } 9d5e57d93b40eb Mostafa Saleh 2023-08-19 929 :::::: The code at line 797 was first introduced by commit :::::: 94d1b3e12c96365344527059d9fc1570856dc06e ANDROID: iommu/arm-smmu-v3-kvm: Use HOST_HVC PD if possible :::::: TO: Jean-Philippe Brucker :::::: CC: Mostafa Saleh -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki