linux-kernel - Re: [PATCH v2] mshv: Add support for integrated scheduler

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Message-ID: <202601301732.2k4q81GI-lkp@intel.com>
Date: Fri, 30 Jan 2026 17:15:43 +0800
From: kernel test robot <lkp@...el.com>
To: Stanislav Kinsburskii <skinsburskii@...ux.microsoft.com>,
	kys@...rosoft.com, haiyangz@...rosoft.com, wei.liu@...nel.org,
	decui@...rosoft.com, longli@...rosoft.com
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mshv: Add support for integrated scheduler

Hi Stanislav,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.19-rc7 next-20260129]
[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/Stanislav-Kinsburskii/mshv-Add-support-for-integrated-scheduler/20260130-041014
base:   linus/master
patch link:    https://lore.kernel.org/r/176971725312.67225.3938191771112866951.stgit%40skinsburskii-cloud-desktop.internal.cloudapp.net
patch subject: [PATCH v2] mshv: Add support for integrated scheduler
config: x86_64-buildonly-randconfig-004-20260130 (https://download.01.org/0day-ci/archive/20260130/202601301732.2k4q81GI-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260130/202601301732.2k4q81GI-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/202601301732.2k4q81GI-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hv/mshv_root_main.c:2260:2: error: expected identifier or '('
    2260 |         dev_dbg(dev, "vmm_caps = %#llx\n", mshv_root.vmm_caps.as_uint64[0]);
         |         ^
   include/linux/dev_printk.h:171:2: note: expanded from macro 'dev_dbg'
     171 |         dev_no_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |         ^
   include/linux/dev_printk.h:137:3: note: expanded from macro 'dev_no_printk'
     137 |         ({                                                              \
         |          ^
>> drivers/hv/mshv_root_main.c:2260:2: error: expected ')'
   include/linux/dev_printk.h:171:2: note: expanded from macro 'dev_dbg'
     171 |         dev_no_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |         ^
   include/linux/dev_printk.h:137:3: note: expanded from macro 'dev_no_printk'
     137 |         ({                                                              \
         |          ^
   drivers/hv/mshv_root_main.c:2260:2: note: to match this '('
   include/linux/dev_printk.h:171:2: note: expanded from macro 'dev_dbg'
     171 |         dev_no_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |         ^
   include/linux/dev_printk.h:137:2: note: expanded from macro 'dev_no_printk'
     137 |         ({                                                              \
         |         ^
   drivers/hv/mshv_root_main.c:2262:2: error: expected identifier or '('
    2262 |         return 0;
         |         ^
>> drivers/hv/mshv_root_main.c:2263:1: error: extraneous closing brace ('}')
    2263 | }
         | ^
   4 errors generated.


vim +2260 drivers/hv/mshv_root_main.c

621191d709b148 Nuno Das Neves                  2025-03-14  2246  
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2247  static int __init mshv_init_vmm_caps(struct device *dev)
fd612d97a458f0 Purna Pavan Chandra Aekkaladevi 2025-10-10  2248  {
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2249  	int ret;
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2250  
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2251  	ret = hv_call_get_partition_property_ex(HV_PARTITION_ID_SELF,
fd612d97a458f0 Purna Pavan Chandra Aekkaladevi 2025-10-10  2252  						HV_PARTITION_PROPERTY_VMM_CAPABILITIES,
fd612d97a458f0 Purna Pavan Chandra Aekkaladevi 2025-10-10  2253  						0, &mshv_root.vmm_caps,
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2254  						sizeof(mshv_root.vmm_caps));
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2255  	if (ret && hv_l1vh_partition())
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2256  		dev_err(dev, "Failed to get VMM capabilities: %d\n", ret);
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2257  		return ret;
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2258  	}
fd612d97a458f0 Purna Pavan Chandra Aekkaladevi 2025-10-10  2259  
fd612d97a458f0 Purna Pavan Chandra Aekkaladevi 2025-10-10 @2260  	dev_dbg(dev, "vmm_caps = %#llx\n", mshv_root.vmm_caps.as_uint64[0]);
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2261  
21480aa03ff5bc Stanislav Kinsburskii           2026-01-29  2262  	return 0;
fd612d97a458f0 Purna Pavan Chandra Aekkaladevi 2025-10-10 @2263  }
fd612d97a458f0 Purna Pavan Chandra Aekkaladevi 2025-10-10  2264  

-- 
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https://github.com/intel/lkp-tests/wiki