From: kernel test robot <lkp@intel.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [willy-pagecache:headers 10/12] arch/alpha/include/asm/pgtable.h:205:40: warning: parameter 'pgd' set but not used
Date: Thu, 13 Aug 2026 18:52:07 +0800 [thread overview]
Message-ID: <202608131819.Ql2Wh3Tn-lkp@intel.com> (raw)
tree: git://git.infradead.org/users/willy/pagecache headers
head: 6fa479fc028749b78a11511e466a5e46fc39c1d6
commit: 407c67a9d6183fc8f62b6a9cf1c153a8cd49cbf3 [10/12] drm: Remove pagemap from ttm_tt.h header
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20260813/202608131819.Ql2Wh3Tn-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260813/202608131819.Ql2Wh3Tn-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/202608131819.Ql2Wh3Tn-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/asm-generic/pgtable-nopud.h:7,
from arch/alpha/include/asm/pgtable.h:5,
from include/linux/pgtable.h:6,
from include/drm/ttm/ttm_caching.h:28,
from include/drm/ttm/ttm_tt.h:31,
from drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c:8:
include/asm-generic/pgtable-nop4d.h:9:18: error: unknown type name 'pgd_t'; did you mean 'pid_t'?
9 | typedef struct { pgd_t pgd; } p4d_t;
| ^~~~~
| pid_t
include/asm-generic/pgtable-nop4d.h:21:28: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
21 | static inline int pgd_none(pgd_t pgd) { return 0; }
| ^~~~~
| p4d_t
include/asm-generic/pgtable-nop4d.h:22:27: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
22 | static inline int pgd_bad(pgd_t pgd) { return 0; }
| ^~~~~
| p4d_t
include/asm-generic/pgtable-nop4d.h:23:31: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
23 | static inline int pgd_present(pgd_t pgd) { return 1; }
| ^~~~~
| p4d_t
include/asm-generic/pgtable-nop4d.h:24:30: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
24 | static inline void pgd_clear(pgd_t *pgd) { }
| ^~~~~
| p4d_t
include/asm-generic/pgtable-nop4d.h:35:33: error: unknown type name 'pgd_t'; did you mean 'p4d_t'?
35 | static inline p4d_t *p4d_offset(pgd_t *pgd, unsigned long address)
| ^~~~~
| p4d_t
In file included from include/linux/mm_types_task.h:14,
from include/linux/mm_types.h:5,
from include/linux/mmzone.h:22,
from arch/alpha/include/asm/pgtable.h:14:
arch/alpha/include/asm/pgtable.h: In function 'pud_set':
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:189:3: note: in expansion of macro 'pud_val'
189 | { pud_val(*pudp) = _PAGE_TABLE | ((((unsigned long) pmdp) - PAGE_OFFSET) << (32-PAGE_SHIFT)); }
| ^~~~~~~
arch/alpha/include/asm/pgtable.h: In function 'pud_pgtable':
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:207:42: note: in expansion of macro 'pud_val'
207 | return (pmd_t *)(PAGE_OFFSET + ((pud_val(pgd) & _PFN_MASK) >> (32-PAGE_SHIFT)));
| ^~~~~~~
>> arch/alpha/include/asm/pgtable.h:205:40: warning: parameter 'pgd' set but not used [-Wunused-but-set-parameter=]
205 | extern inline pmd_t *pud_pgtable(pud_t pgd)
| ~~~~~~^~~
arch/alpha/include/asm/pgtable.h: In function 'pud_none':
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:222:59: note: in expansion of macro 'pud_val'
222 | extern inline int pud_none(pud_t pud) { return !pud_val(pud); }
| ^~~~~~~
>> arch/alpha/include/asm/pgtable.h:222:34: warning: parameter 'pud' set but not used [-Wunused-but-set-parameter=]
222 | extern inline int pud_none(pud_t pud) { return !pud_val(pud); }
| ~~~~~~^~~
arch/alpha/include/asm/pgtable.h: In function 'pud_bad':
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:223:59: note: in expansion of macro 'pud_val'
223 | extern inline int pud_bad(pud_t pud) { return (pud_val(pud) & ~_PFN_MASK) != _PAGE_TABLE; }
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:223:33: warning: parameter 'pud' set but not used [-Wunused-but-set-parameter=]
223 | extern inline int pud_bad(pud_t pud) { return (pud_val(pud) & ~_PFN_MASK) != _PAGE_TABLE; }
| ~~~~~~^~~
arch/alpha/include/asm/pgtable.h: In function 'pud_present':
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:224:58: note: in expansion of macro 'pud_val'
224 | extern inline int pud_present(pud_t pud) { return pud_val(pud) & _PAGE_VALID; }
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:224:37: warning: parameter 'pud' set but not used [-Wunused-but-set-parameter=]
224 | extern inline int pud_present(pud_t pud) { return pud_val(pud) & _PAGE_VALID; }
| ~~~~~~^~~
arch/alpha/include/asm/pgtable.h: In function 'pud_clear':
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
arch/alpha/include/asm/pgtable.h:225:51: note: in expansion of macro 'pud_val'
225 | extern inline void pud_clear(pud_t * pudp) { pud_val(*pudp) = 0; }
| ^~~~~~~
include/linux/pgtable.h: In function 'pmd_off':
include/linux/pgtable.h:167:38: error: implicit declaration of function 'p4d_offset'; did you mean 'pmd_offset'? [-Wimplicit-function-declaration]
167 | return pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, va), va), va), va);
| ^~~~~~~~~~
| pmd_offset
include/linux/pgtable.h:167:38: error: passing argument 1 of 'pud_offset' makes pointer from integer without a cast [-Wint-conversion]
167 | return pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, va), va), va), va);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| int
include/asm-generic/pgtable-nopud.h:42:40: note: expected 'p4d_t *' but argument is of type 'int'
42 | static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
| ~~~~~~~^~~
include/linux/pgtable.h: In function 'pmd_off_k':
include/linux/pgtable.h:172:38: error: passing argument 1 of 'pud_offset' makes pointer from integer without a cast [-Wint-conversion]
172 | return pmd_offset(pud_offset(p4d_offset(pgd_offset_k(va), va), va), va);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| int
include/asm-generic/pgtable-nopud.h:42:40: note: expected 'p4d_t *' but argument is of type 'int'
42 | static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
| ~~~~~~~^~~
include/linux/pgtable.h: In function 'pud_same':
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
include/linux/pgtable.h:1376:16: note: in expansion of macro 'pud_val'
1376 | return pud_val(pud_a) == pud_val(pud_b);
| ^~~~~~~
arch/alpha/include/asm/page.h:32:29: error: request for member 'pgd' in something not a structure or union
32 | #define pgd_val(x) ((x).pgd)
| ^
include/asm-generic/pgtable-nop4d.h:40:50: note: in expansion of macro 'pgd_val'
40 | #define p4d_val(x) (pgd_val((x).pgd))
| ^~~~~~~
include/asm-generic/pgtable-nopud.h:48:50: note: in expansion of macro 'p4d_val'
48 | #define pud_val(x) (p4d_val((x).p4d))
| ^~~~~~~
include/linux/pgtable.h:1376:34: note: in expansion of macro 'pud_val'
1376 | return pud_val(pud_a) == pud_val(pud_b);
| ^~~~~~~
include/linux/pgtable.h:1374:34: warning: parameter 'pud_a' set but not used [-Wunused-but-set-parameter=]
1374 | static inline int pud_same(pud_t pud_a, pud_t pud_b)
| ~~~~~~^~~~~
include/linux/pgtable.h:1374:47: warning: parameter 'pud_b' set but not used [-Wunused-but-set-parameter=]
1374 | static inline int pud_same(pud_t pud_a, pud_t pud_b)
| ~~~~~~^~~~~
vim +/pgd +205 arch/alpha/include/asm/pgtable.h
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 204
9cf6fa245844311 arch/alpha/include/asm/pgtable.h Aneesh Kumar K.V 2021-07-07 @205 extern inline pmd_t *pud_pgtable(pud_t pgd)
9cf6fa245844311 arch/alpha/include/asm/pgtable.h Aneesh Kumar K.V 2021-07-07 206 {
9cf6fa245844311 arch/alpha/include/asm/pgtable.h Aneesh Kumar K.V 2021-07-07 207 return (pmd_t *)(PAGE_OFFSET + ((pud_val(pgd) & _PFN_MASK) >> (32-PAGE_SHIFT)));
9cf6fa245844311 arch/alpha/include/asm/pgtable.h Aneesh Kumar K.V 2021-07-07 208 }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 209
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 210 extern inline int pte_none(pte_t pte) { return !pte_val(pte); }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 211 extern inline int pte_present(pte_t pte) { return pte_val(pte) & _PAGE_VALID; }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 212 extern inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 213 {
dd5712f3379cfe7 arch/alpha/include/asm/pgtable.h Magnus Lindholm 2026-01-02 214 WRITE_ONCE(pte_val(*ptep), 0);
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 215 }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 216
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 217 extern inline int pmd_none(pmd_t pmd) { return !pmd_val(pmd); }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 218 extern inline int pmd_bad(pmd_t pmd) { return (pmd_val(pmd) & ~_PFN_MASK) != _PAGE_TABLE; }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 219 extern inline int pmd_present(pmd_t pmd) { return pmd_val(pmd) & _PAGE_VALID; }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 220 extern inline void pmd_clear(pmd_t * pmdp) { pmd_val(*pmdp) = 0; }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 221
a73c948952ccd66 arch/alpha/include/asm/pgtable.h Mike Rapoport 2019-12-04 @222 extern inline int pud_none(pud_t pud) { return !pud_val(pud); }
a73c948952ccd66 arch/alpha/include/asm/pgtable.h Mike Rapoport 2019-12-04 223 extern inline int pud_bad(pud_t pud) { return (pud_val(pud) & ~_PFN_MASK) != _PAGE_TABLE; }
a73c948952ccd66 arch/alpha/include/asm/pgtable.h Mike Rapoport 2019-12-04 224 extern inline int pud_present(pud_t pud) { return pud_val(pud) & _PAGE_VALID; }
a73c948952ccd66 arch/alpha/include/asm/pgtable.h Mike Rapoport 2019-12-04 225 extern inline void pud_clear(pud_t * pudp) { pud_val(*pudp) = 0; }
^1da177e4c3f415 include/asm-alpha/pgtable.h Linus Torvalds 2005-04-16 226
:::::: The code at line 205 was first introduced by commit
:::::: 9cf6fa2458443118b84090aa1bf7a3630b5940e8 mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *
:::::: TO: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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