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riscv/mm: fix two page table check related issues 

Two page table check related issues have been fixed here.

1. Open CONFIG_PAGE_TABLE_CHECK in riscv32, we got a compile error[1]:

   error: implicit declaration of function 'pud_leaf'

   Add pud_leaf() definition to incluce/asm-generic/pgtable-nopmd.h to fix
   this issue.

2. Keep consistent with other pud_xxx() helpers, move pud_user() to
   pgtable-64.h and add pud_user() to pgtable-nopmd.h.

[1]https://lore.kernel.org/linux-mm/202205161811.2nLxmN2O-lkp@intel.com/T/

Link: https://lkml.kernel.org/r/20220517074548.2227779-2-tongtiangen@huawei.com
Fixes: 856eed79f8d3 ("riscv/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK")
Signed-off-by: Tong Tiangen <tongtiangen@huawei.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Guohanjun <guohanjun@huawei.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Will Deacon <will@kernel.org>
Cc: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Tong Tiangen 2022-05-17 07:45:47 +00:00 committed by akpm
parent bbe832b9db
commit 2c8a81dc0c
3 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/riscv/include/asm/pgtable-64.h
View File

@ -86,6 +86,11 @@ static inline int pud_leaf(pud_t pud)
return pud_present(pud) && (pud_val(pud) & _PAGE_LEAF); return pud_present(pud) && (pud_val(pud) & _PAGE_LEAF);
} }
static inline int pud_user(pud_t pud)
{
return pud_val(pud) & _PAGE_USER;
}
static inline void set_pud(pud_t *pudp, pud_t pud) static inline void set_pud(pud_t *pudp, pud_t pud)
{ {
*pudp = pud; *pudp = pud;

5
arch/riscv/include/asm/pgtable.h
View File

@ -634,11 +634,6 @@ static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
return __set_pte_at(mm, addr, (pte_t *)pmdp, pmd_pte(pmd)); return __set_pte_at(mm, addr, (pte_t *)pmdp, pmd_pte(pmd));
} }
static inline int pud_user(pud_t pud)
{
return pte_user(pud_pte(pud));
}
static inline void set_pud_at(struct mm_struct *mm, unsigned long addr, static inline void set_pud_at(struct mm_struct *mm, unsigned long addr,
pud_t *pudp, pud_t pud) pud_t *pudp, pud_t pud)
{ {

2
include/asm-generic/pgtable-nopmd.h
View File

@ -30,6 +30,8 @@ typedef struct { pud_t pud; } pmd_t;
static inline int pud_none(pud_t pud) { return 0; } static inline int pud_none(pud_t pud) { return 0; }
static inline int pud_bad(pud_t pud) { return 0; } static inline int pud_bad(pud_t pud) { return 0; }
static inline int pud_present(pud_t pud) { return 1; } static inline int pud_present(pud_t pud) { return 1; }
static inline int pud_user(pud_t pud) { return 0; }
static inline int pud_leaf(pud_t pud) { return 0; }
static inline void pud_clear(pud_t *pud) { } static inline void pud_clear(pud_t *pud) { }
#define pmd_ERROR(pmd) (pud_ERROR((pmd).pud)) #define pmd_ERROR(pmd) (pud_ERROR((pmd).pud))