[alexshi:mmunstable 36/38] include/linux/mm_types.h:512:41: error: passing argument 3 of 'pmd_populate' from incompatible pointer type

[alexshi:mmunstable 36/38] include/linux/mm_types.h:512:41: error: passing argument 3 of 'pmd_populate' from incompatible pointer type

[kernel test robot]

tree:   https://github.com/alexshi/linux.git mmunstable
head:   b17c1bbf65811ff797f57b7ddc4fdf4b86d86030
commit: 46417a6009d8064f174e7987dae8288f5cd9c4eb [36/38] pass ptdesc to pmd_populate
config: riscv-allnoconfig (https://download.01.org/0day-ci/archive/20240720/202407201306.NLb2aJOR-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240720/202407201306.NLb2aJOR-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/202407201306.NLb2aJOR-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/mmzone.h:22,
                    from include/linux/topology.h:33,
                    from include/linux/irq.h:19,
                    from include/asm-generic/hardirq.h:17,
                    from ./arch/riscv/include/generated/asm/hardirq.h:1,
                    from include/linux/hardirq.h:11,
                    from include/linux/interrupt.h:11,
                    from include/linux/kernel_stat.h:9,
                    from mm/memory.c:43:
   mm/memory.c: In function 'pmd_install':
>> include/linux/mm_types.h:512:41: error: passing argument 3 of 'pmd_populate' from incompatible pointer type [-Wincompatible-pointer-types]
     510 | #define page_ptdesc(p)                  (_Generic((p),                  \
         |                                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     511 |         const struct page *:            (const struct ptdesc *)(p),     \
         |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     512 |         struct page *:                  (struct ptdesc *)(p)))
         |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
         |                                         |
         |                                         struct ptdesc *
   mm/memory.c:440:39: note: in expansion of macro 'page_ptdesc'
     440 |                 pmd_populate(mm, pmd, page_ptdesc(*pte));
         |                                       ^~~~~~~~~~~
   In file included from mm/memory.c:86:
   arch/riscv/include/asm/pgalloc.h:36:31: note: expected 'pgtable_t' {aka 'struct page *'} but argument is of type 'struct ptdesc *'
      36 |         pmd_t *pmd, pgtable_t pte)
         |                     ~~~~~~~~~~^~~
--
   In file included from include/linux/mmzone.h:22,
                    from include/linux/gfp.h:7,
                    from include/linux/mm.h:7,
                    from mm/mremap.c:11:
   mm/mremap.c: In function 'move_normal_pmd':
>> include/linux/mm_types.h:512:41: error: passing argument 3 of 'pmd_populate' from incompatible pointer type [-Wincompatible-pointer-types]
     510 | #define page_ptdesc(p)                  (_Generic((p),                  \
         |                                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     511 |         const struct page *:            (const struct ptdesc *)(p),     \
         |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     512 |         struct page *:                  (struct ptdesc *)(p)))
         |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
         |                                         |
         |                                         struct ptdesc *
   mm/mremap.c:286:35: note: in expansion of macro 'page_ptdesc'
     286 |         pmd_populate(mm, new_pmd, page_ptdesc(pmd_pgtable(pmd)));
         |                                   ^~~~~~~~~~~
   In file included from mm/mremap.c:31:
   arch/riscv/include/asm/pgalloc.h:36:31: note: expected 'pgtable_t' {aka 'struct page *'} but argument is of type 'struct ptdesc *'
      36 |         pmd_t *pmd, pgtable_t pte)
         |                     ~~~~~~~~~~^~~


vim +/pmd_populate +512 include/linux/mm_types.h

9a35de4ffc209b Vishal Moola (Oracle  2023-08-07  501) 
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  502) #define ptdesc_page(pt)			(_Generic((pt),			\
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  503) 	const struct ptdesc *:		(const struct page *)(pt),	\
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  504) 	struct ptdesc *:		(struct page *)(pt)))
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  505) 
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  506) #define ptdesc_folio(pt)		(_Generic((pt),			\
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  507) 	const struct ptdesc *:		(const struct folio *)(pt),	\
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  508) 	struct ptdesc *:		(struct folio *)(pt)))
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  509) 
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  510) #define page_ptdesc(p)			(_Generic((p),			\
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  511) 	const struct page *:		(const struct ptdesc *)(p),	\
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07 @512) 	struct page *:			(struct ptdesc *)(p)))
bf2d4334f72e4e Vishal Moola (Oracle  2023-08-07  513) 

:::::: The code at line 512 was first introduced by commit
:::::: bf2d4334f72e4e033166c5a3bf1331a7238eab9d mm: add utility functions for ptdesc

:::::: TO: Vishal Moola (Oracle) <vishal.moola@gmail.com>
:::::: CC: Andrew Morton <akpm@linux-foundation.org>

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