[broonie-ci:kvm-arm64-sme 4/30] arch/arm64/kernel/fpsimd.c:518:5: warning: format specifies type 'unsigned long long' but the argument has type 'int'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git kvm-arm64-sme
head:   489202b3db0a02f59477f8ec63009dc3d998341f
commit: b77633efe7c6ef49465e89432b3fd7d1541d3b3a [4/30] arm64/fpsimd: Decide to save ZT0 and streaming mode FFR at bind time
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20260708/202607080542.LD9Mh3ue-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 0a2fb2a2269da0e2a3e230beb6cad39ca314db33)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260708/202607080542.LD9Mh3ue-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/202607080542.LD9Mh3ue-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm64/kernel/fpsimd.c:518:5: warning: format specifies type 'unsigned long long' but the argument has type 'int' [-Wformat]
     517 |                         pr_crit("%llu %llu\n",
         |                                  ~~~~
         |                                  %d
     518 |                                 sve_get_vl() != sve_vl_from_vq(vq));
         |                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/printk.h:544:34: note: expanded from macro 'pr_crit'
     544 |         printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
         |                                 ~~~     ^~~~~~~~~~~
   include/linux/printk.h:511:60: note: expanded from macro 'printk'
     511 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
         |                                                     ~~~    ^~~~~~~~~~~
   include/linux/printk.h:483:19: note: expanded from macro 'printk_index_wrap'
     483 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ~~~~    ^~~~~~~~~~~
>> arch/arm64/kernel/fpsimd.c:517:21: warning: more '%' conversions than data arguments [-Wformat-insufficient-args]
     517 |                         pr_crit("%llu %llu\n",
         |                                       ~~~^
   include/linux/printk.h:544:26: note: expanded from macro 'pr_crit'
     544 |         printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
         |                                 ^~~
   include/linux/printk.h:401:21: note: expanded from macro 'pr_fmt'
     401 | #define pr_fmt(fmt) fmt
         |                     ^~~
   include/linux/printk.h:511:53: note: expanded from macro 'printk'
     511 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
         |                                                     ^~~
   include/linux/printk.h:483:11: note: expanded from macro 'printk_index_wrap'
     483 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   2 warnings generated.


vim +518 arch/arm64/kernel/fpsimd.c

   452	
   453	/*
   454	 * Ensure FPSIMD/SVE storage in memory for the loaded context is up to
   455	 * date with respect to the CPU registers. Note carefully that the
   456	 * current context is the context last bound to the CPU stored in
   457	 * last, if KVM is involved this may be the guest VM context rather
   458	 * than the host thread for the VM pointed to by current. This means
   459	 * that we must always reference the state storage via last rather
   460	 * than via current, if we are saving KVM state then it will have
   461	 * ensured that the type of registers to save is set in last->to_save.
   462	 */
   463	static void fpsimd_save_user_state(void)
   464	{
   465		struct cpu_fp_state const *last =
   466			this_cpu_ptr(&fpsimd_last_state);
   467		/* set by fpsimd_bind_task_to_cpu() or fpsimd_bind_state_to_cpu() */
   468		bool save_sve_regs = false;
   469		bool save_ffr;
   470		unsigned int vq;
   471	
   472		WARN_ON(!system_supports_fpsimd());
   473		WARN_ON(preemptible());
   474	
   475		if (test_thread_flag(TIF_FOREIGN_FPSTATE))
   476			return;
   477	
   478		if (system_supports_fpmr())
   479			*(last->fpmr) = read_sysreg_s(SYS_FPMR);
   480	
   481		/*
   482		 * Save SVE state if it is live.
   483		 *
   484		 * The syscall ABI discards live SVE state at syscall entry. When
   485		 * entering a syscall, fpsimd_syscall_enter() sets to_save to
   486		 * FP_STATE_FPSIMD to allow the SVE state to be lazily discarded until
   487		 * either new SVE state is loaded+bound or fpsimd_syscall_exit() is
   488		 * called prior to a return to userspace.
   489		 */
   490		if ((last->to_save == FP_STATE_CURRENT && test_thread_flag(TIF_SVE)) ||
   491		    last->to_save == FP_STATE_SVE) {
   492			save_sve_regs = true;
   493			save_ffr = true;
   494			vq = SYS_FIELD_GET(ZCR_ELx, LEN, last->zcr) + 1;
   495		}
   496	
   497		if (system_supports_sme()) {
   498			u64 *svcr = last->svcr;
   499	
   500			*svcr = read_sysreg_s(SYS_SVCR);
   501	
   502			if (*svcr & SVCR_ZA_MASK)
   503				sme_save_state(last->sme_state,
   504					       last->smcr & SMCR_ELx_EZT0);
   505	
   506			/* If we are in streaming mode override regular SVE. */
   507			if (*svcr & SVCR_SM_MASK) {
   508				save_sve_regs = true;
   509				save_ffr = last->smcr & SMCR_ELx_FA64;
   510				vq = SYS_FIELD_GET(SMCR_ELx, LEN, last->smcr) + 1;
   511			}
   512		}
   513	
   514		if (IS_ENABLED(CONFIG_ARM64_SVE) && save_sve_regs) {
   515			/* Get the configured VL from RDVL, will account for SM */
   516			if (WARN_ON(sve_get_vl() != sve_vl_from_vq(vq))) {
 > 517				pr_crit("%llu %llu\n",
 > 518					sve_get_vl() != sve_vl_from_vq(vq));
   519				/*
   520				 * Can't save the user regs, so current would
   521				 * re-enter user with corrupt state.
   522				 * There's no way to recover, so kill it:
   523				 */
   524				force_signal_inject(SIGKILL, SI_KERNEL, 0, 0);
   525				return;
   526			}
   527	
   528			sve_save_state(last->sve_state, save_ffr);
   529			fpsimd_save_common(last->st);
   530			*last->fp_type = FP_STATE_SVE;
   531		} else {
   532			fpsimd_save_state(last->st);
   533			*last->fp_type = FP_STATE_FPSIMD;
   534		}
   535	}
   536	

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