[daveh-devel:shstk-vmalloc 19/19] arch/x86/kernel/shstk_kunit.c:75:36: warning: cast from pointer to integer of different size

[daveh-devel:shstk-vmalloc 19/19] arch/x86/kernel/shstk_kunit.c:75:36: warning: cast from pointer to integer of different size

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/daveh/devel.git shstk-vmalloc
head:   a820a994160883fea70750876fe26073766d831f
commit: a820a994160883fea70750876fe26073766d831f [19/19] kshstk-onoff-test
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20260907/202609072027.cydV3K5Z-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/20260907/202609072027.cydV3K5Z-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/202609072027.cydV3K5Z-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/x86/kernel/shstk_kunit.c: In function 'enable_kernel_shstk_and_load_ssp':
>> arch/x86/kernel/shstk_kunit.c:75:36: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
      75 |         __wrmsrq(MSR_IA32_PL0_SSP, (u64)token_addr);
         |                                    ^
   arch/x86/kernel/shstk_kunit.c: Assembler messages:
   arch/x86/kernel/shstk_kunit.c:47: Error: `rdsspq' is only supported in 64-bit mode


vim +75 arch/x86/kernel/shstk_kunit.c

    61	
    62	static noinline notrace void enable_kernel_shstk_and_load_ssp(unsigned long *token_addr)
    63	{
    64		unsigned long flags;
    65		u64 old_msr;
    66		/*
    67		 * 2. Format 64-bit Restore Token:
    68		 * Token must match linear address of token itself with Bit 0 set (64-bit mode)
    69		 * and Bit 1 clear (not busy).
    70		 */
    71		unsigned long restore_token = (unsigned long)token_addr | 0x1ULL;
    72		printk("CET Test: Prepared restore token 0x%lx at %p\n", restore_token, token_addr);
    73	
    74		local_irq_save(flags);
  > 75		__wrmsrq(MSR_IA32_PL0_SSP, (u64)token_addr);
    76		old_msr = __rdmsr(MSR_IA32_S_CET);
    77	
    78		/* Must be atomic, nothing can go in between these two: */
    79		__wrmsrq(MSR_IA32_S_CET, old_msr | CET_SHSTK_EN | CET_WRSS_EN);
    80		asm volatile ( "setssbsy" ::: "memory" );
    81		//wrssq(restore_token, token_addr);
    82		/* End atomic bit */
    83	
    84	
    85		local_irq_restore(flags);
    86	}
    87	

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