Messages in this thread | | | Date | Mon, 5 Jul 2021 09:33:30 +0800 | From | kernel test robot <> | Subject | arch/x86/xen/enlighten_pvh.c:26:13: warning: no previous prototype for 'xen_pvh_init' |
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Hi Jason,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a180bd1d7e16173d965b263c5a536aa40afa2a2a commit: 34aff14580d1b02971adfd63be994f9c045919aa xen: Remove Xen PVH/PVHVM dependency on PCI date: 7 months ago config: x86_64-buildonly-randconfig-r002-20210705 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34aff14580d1b02971adfd63be994f9c045919aa git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 34aff14580d1b02971adfd63be994f9c045919aa # save the attached .config to linux build tree make W=1 ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> arch/x86/xen/enlighten_pvh.c:26:13: warning: no previous prototype for 'xen_pvh_init' [-Wmissing-prototypes] 26 | void __init xen_pvh_init(struct boot_params *boot_params) | ^~~~~~~~~~~~ >> arch/x86/xen/enlighten_pvh.c:42:13: warning: no previous prototype for 'mem_map_via_hcall' [-Wmissing-prototypes] 42 | void __init mem_map_via_hcall(struct boot_params *boot_params_p) | ^~~~~~~~~~~~~~~~~
vim +/xen_pvh_init +26 arch/x86/xen/enlighten_pvh.c
8cee3974b35bfb Maran Wilson 2018-12-10 25 72813bfbf0276a Roger Pau Monne 2019-04-23 @26 void __init xen_pvh_init(struct boot_params *boot_params) 8cee3974b35bfb Maran Wilson 2018-12-10 27 { 8cee3974b35bfb Maran Wilson 2018-12-10 28 u32 msr; 8cee3974b35bfb Maran Wilson 2018-12-10 29 u64 pfn; 8cee3974b35bfb Maran Wilson 2018-12-10 30 8cee3974b35bfb Maran Wilson 2018-12-10 31 xen_pvh = 1; c9f804d64bb93c Roger Pau Monne 2019-04-23 32 xen_domain_type = XEN_HVM_DOMAIN; 8cee3974b35bfb Maran Wilson 2018-12-10 33 xen_start_flags = pvh_start_info.flags; 8cee3974b35bfb Maran Wilson 2018-12-10 34 8cee3974b35bfb Maran Wilson 2018-12-10 35 msr = cpuid_ebx(xen_cpuid_base() + 2); 8cee3974b35bfb Maran Wilson 2018-12-10 36 pfn = __pa(hypercall_page); 8cee3974b35bfb Maran Wilson 2018-12-10 37 wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); 72813bfbf0276a Roger Pau Monne 2019-04-23 38 72813bfbf0276a Roger Pau Monne 2019-04-23 39 xen_efi_init(boot_params); 8cee3974b35bfb Maran Wilson 2018-12-10 40 } a43fb7da53007e Maran Wilson 2018-12-10 41 a43fb7da53007e Maran Wilson 2018-12-10 @42 void __init mem_map_via_hcall(struct boot_params *boot_params_p)
:::::: The code at line 26 was first introduced by commit :::::: 72813bfbf0276a97c82af038efb5f02dcdd9e310 xen/pvh: correctly setup the PV EFI interface for dom0
:::::: TO: Roger Pau Monne <roger.pau@citrix.com> :::::: CC: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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