[joro:sev-es-client-v5.6-rc5 60/65] arch/x86/kernel/sev-es.c:244:20: sparse: sparse: incorrect type in assignment (different address spaces)

[joro:sev-es-client-v5.6-rc5 60/65] arch/x86/kernel/sev-es.c:244:20: sparse: sparse: incorrect type in assignment (different address spaces)

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 2542 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git sev-es-client-v5.6-rc5
head:   371cfd3c565d6bed145f4b0c07bf780649d70278
commit: 9326787bbae47dd72b04991f1429299df0f4266d [60/65] x86/realmode: Setup AP jump table
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-180-g0558317d-dirty
        git checkout 9326787bbae47dd72b04991f1429299df0f4266d
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

>> arch/x86/kernel/sev-es.c:244:20: sparse: sparse: incorrect type in assignment (different address spaces) @@    expected unsigned short [usertype] *jump_table @@    got igned short [usertype] *jump_table @@
   arch/x86/kernel/sev-es.c:244:20: sparse:    expected unsigned short [usertype] *jump_table
   arch/x86/kernel/sev-es.c:244:20: sparse:    got void [noderef] <asn:2> *
>> arch/x86/kernel/sev-es.c:251:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@    expected void volatile [noderef] <asn:2> *addr @@    got olatile [noderef] <asn:2> *addr @@
   arch/x86/kernel/sev-es.c:251:17: sparse:    expected void volatile [noderef] <asn:2> *addr
   arch/x86/kernel/sev-es.c:251:17: sparse:    got unsigned short [usertype] *jump_table

vim +244 arch/x86/kernel/sev-es.c

   224	
   225	int sev_es_setup_ap_jump_table(struct real_mode_header *rmh)
   226	{
   227		u16 startup_cs, startup_ip;
   228		phys_addr_t jump_table_pa;
   229		u64 jump_table_addr;
   230		u16 *jump_table;
   231	
   232		jump_table_addr = sev_es_get_jump_table_addr();
   233	
   234		/* Check if AP Jump Table is non-zero and page-aligned */
   235		if (!jump_table_addr || jump_table_addr & ~PAGE_MASK)
   236			return 0;
   237	
   238		jump_table_pa = jump_table_addr & PAGE_MASK;
   239	
   240		startup_cs = (u16)(rmh->trampoline_start >> 4);
   241		startup_ip = (u16)(rmh->sev_es_trampoline_start -
   242				   rmh->trampoline_start);
   243	
 > 244		jump_table = ioremap_encrypted(jump_table_pa, PAGE_SIZE);
   245		if (!jump_table)
   246			return -EIO;
   247	
   248		jump_table[0] = startup_ip;
   249		jump_table[1] = startup_cs;
   250	
 > 251		iounmap(jump_table);
   252	
   253		return 0;
   254	}
   255	

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