linux-kernel - Re: [PATCH v4 15/17] x86/hyperv: implement an MSI domain for root partition

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Message-ID: <202101070658.h9Fcg0JA-lkp@intel.com>
Date:   Thu, 7 Jan 2021 06:21:24 +0800
From:   kernel test robot <lkp@...el.com>
To:     Wei Liu <wei.liu@...nel.org>,
        Linux on Hyper-V List <linux-hyperv@...r.kernel.org>
Cc:     kbuild-all@...ts.01.org, virtualization@...ts.linux-foundation.org,
        Linux Kernel List <linux-kernel@...r.kernel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Vineeth Pillai <viremana@...ux.microsoft.com>,
        Sunil Muthuswamy <sunilmut@...rosoft.com>,
        Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>
Subject: Re: [PATCH v4 15/17] x86/hyperv: implement an MSI domain for root
 partition

Hi Wei,

I love your patch! Perhaps something to improve:

[auto build test WARNING on e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62]

url:    https://github.com/0day-ci/linux/commits/Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20210107-044149
base:    e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62
config: i386-randconfig-m021-20210106 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/376aee69c6ab18dc23b0386590bee82d59555be8
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20210107-044149
        git checkout 376aee69c6ab18dc23b0386590bee82d59555be8
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> arch/x86/hyperv/irqdomain.c:317:28: warning: no previous prototype for 'hv_create_pci_msi_domain' [-Wmissing-prototypes]
     317 | struct irq_domain * __init hv_create_pci_msi_domain(void)
         |                            ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/hv_create_pci_msi_domain +317 arch/x86/hyperv/irqdomain.c

   316	
 > 317	struct irq_domain * __init hv_create_pci_msi_domain(void)
   318	{
   319		struct irq_domain *d = NULL;
   320		struct fwnode_handle *fn;
   321	
   322		fn = irq_domain_alloc_named_fwnode("HV-PCI-MSI");
   323		if (fn)
   324			d = pci_msi_create_irq_domain(fn, &hv_pci_msi_domain_info, x86_vector_domain);
   325	
   326		/* No point in going further if we can't get an irq domain */
   327		BUG_ON(!d);
   328	
   329		return d;
   330	}
   331	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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