tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: eda809aef53426d044b519405d25d9da55319b76 commit: 0888e1030d3e3e5ce9dfd8e030cf13a2e9a1519a x86/asm: Carve out a generic movdir64b() helper for general usage date: 3 months ago config: x86_64-randconfig-s031-20210103 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-184-g1b896707-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0888e1030d3e3e5ce9dfd8e030cf13a2e9a1519a git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 0888e1030d3e3e5ce9dfd8e030cf13a2e9a1519a # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
"sparse warnings: (new ones prefixed by >>)"
drivers/dma/idxd/submit.c: note: in included file (through
include/linux/io.h, include/linux/pci.h):
>> arch/x86/include/asm/io.h:422:27: sparse: sparse: incorrect type in argument
>> 1 (different address spaces) @@ expected void *dst @@ got void
>> [noderef] __iomem *dst @@
arch/x86/include/asm/io.h:422:27: sparse: expected void *dst
arch/x86/include/asm/io.h:422:27: sparse: got void [noderef] __iomem *dst
vim +422 arch/x86/include/asm/io.h
398
399 extern bool phys_mem_access_encrypted(unsigned long phys_addr,
400 unsigned long size);
401
402 /**
403 * iosubmit_cmds512 - copy data to single MMIO location, in 512-bit
units
404 * @dst: destination, in MMIO space (must be 512-bit aligned)
405 * @src: source
406 * @count: number of 512 bits quantities to submit
407 *
408 * Submit data from kernel space to MMIO space, in units of 512 bits at
a
409 * time. Order of access is not guaranteed, nor is a memory barrier
410 * performed afterwards.
411 *
412 * Warning: Do not use this helper unless your driver has checked that
the CPU
413 * instruction is supported on the platform.
414 */
415 static inline void iosubmit_cmds512(void __iomem *dst, const void *src,
416 size_t count)
417 {
418 const u8 *from = src;
419 const u8 *end = from + count * 64;
420
421 while (from < end) {
> 422 movdir64b(dst, from);
423 from += 64;
424 }
425 }
426
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
