linux-kernel - Re: [PATCH v1 6/6] x86/hyperv: Enable build of hypervisor crashdump collection files

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Message-ID: <202509131228.naboUNkE-lkp@intel.com>
Date: Sat, 13 Sep 2025 12:53:28 +0800
From: kernel test robot <lkp@...el.com>
To: Mukesh Rathor <mrathor@...ux.microsoft.com>,
	linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, kys@...rosoft.com,
	haiyangz@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com,
	tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
	dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
	arnd@...db.de
Subject: Re: [PATCH v1 6/6] x86/hyperv: Enable build of hypervisor crashdump
 collection files

Hi Mukesh,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20250909]
[also build test WARNING on v6.17-rc5]
[cannot apply to tip/x86/core tip/master linus/master arnd-asm-generic/master tip/auto-latest v6.17-rc5 v6.17-rc4 v6.17-rc3]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Mukesh-Rathor/x86-hyperv-Rename-guest-crash-shutdown-function/20250910-081309
base:   next-20250909
patch link:    https://lore.kernel.org/r/20250910001009.2651481-7-mrathor%40linux.microsoft.com
patch subject: [PATCH v1 6/6] x86/hyperv: Enable build of hypervisor crashdump collection files
config: x86_64-randconfig-073-20250913 (https://download.01.org/0day-ci/archive/20250913/202509131228.naboUNkE-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250913/202509131228.naboUNkE-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509131228.naboUNkE-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/x86/include/asm/mshyperv.h:272,
                    from arch/x86/hyperv/hv_apic.c:29:
>> include/asm-generic/mshyperv.h:370:5: warning: "CONFIG_CRASH_DUMP" is not defined, evaluates to 0 [-Wundef]
     370 | #if CONFIG_CRASH_DUMP
         |     ^~~~~~~~~~~~~~~~~


vim +/CONFIG_CRASH_DUMP +370 include/asm-generic/mshyperv.h

   369	
 > 370	#if CONFIG_CRASH_DUMP
   371	void hv_root_crash_init(void);
   372	void hv_crash_asm32(void);
   373	void hv_crash_asm64_lbl(void);
   374	void hv_crash_asm_end(void);
   375	#else   /* CONFIG_CRASH_DUMP */
   376	static inline void hv_root_crash_init(void) {}
   377	#endif  /* CONFIG_CRASH_DUMP */
   378	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki