Re: [PATCH] KVM: x86: Complain about an attempt to change the APIC base address

[kernel test robot <lkp@intel.com>]

Hi Jim,

kernel test robot noticed the following build warnings:

[auto build test WARNING on kvm/queue]
[also build test WARNING on linus/master v6.10-rc5 next-20240625]
[cannot apply to kvm/linux-next]
[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/Jim-Mattson/KVM-x86-Complain-about-an-attempt-to-change-the-APIC-base-address/20240625-181629
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
patch link:    https://lore.kernel.org/r/20240621224946.4083742-1-jmattson%40google.com
patch subject: [PATCH] KVM: x86: Complain about an attempt to change the APIC base address
config: i386-randconfig-141-20240626 (https://download.01.org/0day-ci/archive/20240626/202406260523.KaaWyitN-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240626/202406260523.KaaWyitN-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406260523.KaaWyitN-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/asm-generic/bug.h:22,
                    from arch/x86/include/asm/bug.h:87,
                    from include/linux/bug.h:5,
                    from include/linux/alloc_tag.h:8,
                    from include/linux/percpu.h:5,
                    from include/linux/context_tracking_state.h:5,
                    from include/linux/hardirq.h:5,
                    from include/linux/kvm_host.h:7,
                    from arch/x86/kvm/lapic.c:20:
   arch/x86/kvm/lapic.c: In function 'kvm_lapic_set_base':
   include/linux/kern_levels.h:5:25: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 5 has type 'long unsigned int' [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:436:25: note: in definition of macro 'printk_index_wrap'
     436 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:658:17: note: in expansion of macro 'printk'
     658 |                 printk(fmt, ##__VA_ARGS__);                             \
         |                 ^~~~~~
   include/linux/printk.h:672:9: note: in expansion of macro 'printk_ratelimited'
     672 |         printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
      11 | #define KERN_ERR        KERN_SOH "3"    /* error conditions */
         |                         ^~~~~~~~
   include/linux/printk.h:672:28: note: in expansion of macro 'KERN_ERR'
     672 |         printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |                            ^~~~~~~~
   include/linux/kvm_host.h:855:9: note: in expansion of macro 'pr_err_ratelimited'
     855 |         pr_err_ratelimited("kvm [%i]: " fmt, \
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/kvm_host.h:860:9: note: in expansion of macro 'kvm_pr_unimpl'
     860 |         kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt,                  \
         |         ^~~~~~~~~~~~~
   arch/x86/kvm/lapic.c:2586:17: note: in expansion of macro 'vcpu_unimpl'
    2586 |                 vcpu_unimpl(vcpu, "APIC base %#llx is not %#llx",
         |                 ^~~~~~~~~~~
>> include/linux/kern_levels.h:5:25: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 6 has type 'unsigned int' [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:436:25: note: in definition of macro 'printk_index_wrap'
     436 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:658:17: note: in expansion of macro 'printk'
     658 |                 printk(fmt, ##__VA_ARGS__);                             \
         |                 ^~~~~~
   include/linux/printk.h:672:9: note: in expansion of macro 'printk_ratelimited'
     672 |         printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
      11 | #define KERN_ERR        KERN_SOH "3"    /* error conditions */
         |                         ^~~~~~~~
   include/linux/printk.h:672:28: note: in expansion of macro 'KERN_ERR'
     672 |         printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |                            ^~~~~~~~
   include/linux/kvm_host.h:855:9: note: in expansion of macro 'pr_err_ratelimited'
     855 |         pr_err_ratelimited("kvm [%i]: " fmt, \
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/kvm_host.h:860:9: note: in expansion of macro 'kvm_pr_unimpl'
     860 |         kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt,                  \
         |         ^~~~~~~~~~~~~
   arch/x86/kvm/lapic.c:2586:17: note: in expansion of macro 'vcpu_unimpl'
    2586 |                 vcpu_unimpl(vcpu, "APIC base %#llx is not %#llx",
         |                 ^~~~~~~~~~~


vim +5 include/linux/kern_levels.h

314ba3520e513a Joe Perches 2012-07-30  4  
04d2c8c83d0e3a Joe Perches 2012-07-30 @5  #define KERN_SOH	"\001"		/* ASCII Start Of Header */
04d2c8c83d0e3a Joe Perches 2012-07-30  6  #define KERN_SOH_ASCII	'\001'
04d2c8c83d0e3a Joe Perches 2012-07-30  7  

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