@@ -30,8 +30,6 @@ PTE Page Table Helpers
+---------------------------+--------------------------------------------------+
| pte_protnone | Tests a PROT_NONE PTE |
+---------------------------+--------------------------------------------------+
-| pte_devmap | Tests a ZONE_DEVICE mapped PTE |
-+---------------------------+--------------------------------------------------+
| pte_soft_dirty | Tests a soft dirty PTE |
+---------------------------+--------------------------------------------------+
| pte_swp_soft_dirty | Tests a soft dirty swapped PTE |
@@ -104,8 +102,6 @@ PMD Page Table Helpers
+---------------------------+--------------------------------------------------+
| pmd_protnone | Tests a PROT_NONE PMD |
+---------------------------+--------------------------------------------------+
-| pmd_devmap | Tests a ZONE_DEVICE mapped PMD |
-+---------------------------+--------------------------------------------------+
| pmd_soft_dirty | Tests a soft dirty PMD |
+---------------------------+--------------------------------------------------+
| pmd_swp_soft_dirty | Tests a soft dirty swapped PMD |
@@ -177,8 +173,6 @@ PUD Page Table Helpers
+---------------------------+--------------------------------------------------+
| pud_write | Tests a writable PUD |
+---------------------------+--------------------------------------------------+
-| pud_devmap | Tests a ZONE_DEVICE mapped PUD |
-+---------------------------+--------------------------------------------------+
| pud_mkyoung | Creates a young PUD |
+---------------------------+--------------------------------------------------+
| pud_mkold | Creates an old PUD |
@@ -42,7 +42,6 @@ config ARM64
select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
select ARCH_HAS_NONLEAF_PMD_YOUNG if ARM64_HAFT
select ARCH_HAS_PTDUMP
- select ARCH_HAS_PTE_DEVMAP
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_HW_PTE_YOUNG
select ARCH_HAS_SETUP_DMA_OPS
@@ -17,7 +17,6 @@
#define PTE_SWP_EXCLUSIVE (_AT(pteval_t, 1) << 2) /* only for swp ptes */
#define PTE_DIRTY (_AT(pteval_t, 1) << 55)
#define PTE_SPECIAL (_AT(pteval_t, 1) << 56)
-#define PTE_DEVMAP (_AT(pteval_t, 1) << 57)
/*
* PTE_PRESENT_INVALID=1 & PTE_VALID=0 indicates that the pte's fields should be
@@ -108,7 +108,6 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys)
#define pte_user(pte) (!!(pte_val(pte) & PTE_USER))
#define pte_user_exec(pte) (!(pte_val(pte) & PTE_UXN))
#define pte_cont(pte) (!!(pte_val(pte) & PTE_CONT))
-#define pte_devmap(pte) (!!(pte_val(pte) & PTE_DEVMAP))
#define pte_tagged(pte) ((pte_val(pte) & PTE_ATTRINDX_MASK) == \
PTE_ATTRINDX(MT_NORMAL_TAGGED))
@@ -290,11 +289,6 @@ static inline pmd_t pmd_mkcont(pmd_t pmd)
return __pmd(pmd_val(pmd) | PMD_SECT_CONT);
}
-static inline pte_t pte_mkdevmap(pte_t pte)
-{
- return set_pte_bit(pte, __pgprot(PTE_DEVMAP | PTE_SPECIAL));
-}
-
#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_WP
static inline int pte_uffd_wp(pte_t pte)
{
@@ -587,14 +581,6 @@ static inline int pmd_trans_huge(pmd_t pmd)
#define pmd_mkhuge(pmd) (__pmd(pmd_val(pmd) & ~PMD_TABLE_BIT))
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-#define pmd_devmap(pmd) pte_devmap(pmd_pte(pmd))
-#endif
-static inline pmd_t pmd_mkdevmap(pmd_t pmd)
-{
- return pte_pmd(set_pte_bit(pmd_pte(pmd), __pgprot(PTE_DEVMAP)));
-}
-
#ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP
#define pmd_special(pte) (!!((pmd_val(pte) & PTE_SPECIAL)))
static inline pmd_t pmd_mkspecial(pmd_t pmd)
@@ -1195,16 +1181,6 @@ static inline int pmdp_set_access_flags(struct vm_area_struct *vma,
return __ptep_set_access_flags(vma, address, (pte_t *)pmdp,
pmd_pte(entry), dirty);
}
-
-static inline int pud_devmap(pud_t pud)
-{
- return 0;
-}
-
-static inline int pgd_devmap(pgd_t pgd)
-{
- return 0;
-}
#endif
#ifdef CONFIG_PAGE_TABLE_CHECK
@@ -25,7 +25,6 @@ config LOONGARCH
select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
select ARCH_HAS_PREEMPT_LAZY
- select ARCH_HAS_PTE_DEVMAP
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_SET_DIRECT_MAP
@@ -22,7 +22,6 @@
#define _PAGE_PFN_SHIFT 12
#define _PAGE_SWP_EXCLUSIVE_SHIFT 23
#define _PAGE_PFN_END_SHIFT 48
-#define _PAGE_DEVMAP_SHIFT 59
#define _PAGE_PRESENT_INVALID_SHIFT 60
#define _PAGE_NO_READ_SHIFT 61
#define _PAGE_NO_EXEC_SHIFT 62
@@ -36,7 +35,6 @@
#define _PAGE_MODIFIED (_ULCAST_(1) << _PAGE_MODIFIED_SHIFT)
#define _PAGE_PROTNONE (_ULCAST_(1) << _PAGE_PROTNONE_SHIFT)
#define _PAGE_SPECIAL (_ULCAST_(1) << _PAGE_SPECIAL_SHIFT)
-#define _PAGE_DEVMAP (_ULCAST_(1) << _PAGE_DEVMAP_SHIFT)
/* We borrow bit 23 to store the exclusive marker in swap PTEs. */
#define _PAGE_SWP_EXCLUSIVE (_ULCAST_(1) << _PAGE_SWP_EXCLUSIVE_SHIFT)
@@ -76,8 +74,8 @@
#define __READABLE (_PAGE_VALID)
#define __WRITEABLE (_PAGE_DIRTY | _PAGE_WRITE)
-#define _PAGE_CHG_MASK (_PAGE_MODIFIED | _PAGE_SPECIAL | _PAGE_DEVMAP | _PFN_MASK | _CACHE_MASK | _PAGE_PLV)
-#define _HPAGE_CHG_MASK (_PAGE_MODIFIED | _PAGE_SPECIAL | _PAGE_DEVMAP | _PFN_MASK | _CACHE_MASK | _PAGE_PLV | _PAGE_HUGE)
+#define _PAGE_CHG_MASK (_PAGE_MODIFIED | _PAGE_SPECIAL | _PFN_MASK | _CACHE_MASK | _PAGE_PLV)
+#define _HPAGE_CHG_MASK (_PAGE_MODIFIED | _PAGE_SPECIAL | _PFN_MASK | _CACHE_MASK | _PAGE_PLV | _PAGE_HUGE)
#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_NO_READ | \
_PAGE_USER | _CACHE_CC)
@@ -410,9 +410,6 @@ static inline int pte_special(pte_t pte) { return pte_val(pte) & _PAGE_SPECIAL;
static inline pte_t pte_mkspecial(pte_t pte) { pte_val(pte) |= _PAGE_SPECIAL; return pte; }
#endif /* CONFIG_ARCH_HAS_PTE_SPECIAL */
-static inline int pte_devmap(pte_t pte) { return !!(pte_val(pte) & _PAGE_DEVMAP); }
-static inline pte_t pte_mkdevmap(pte_t pte) { pte_val(pte) |= _PAGE_DEVMAP; return pte; }
-
#define pte_accessible pte_accessible
static inline unsigned long pte_accessible(struct mm_struct *mm, pte_t a)
{
@@ -547,17 +544,6 @@ static inline pmd_t pmd_mkyoung(pmd_t pmd)
return pmd;
}
-static inline int pmd_devmap(pmd_t pmd)
-{
- return !!(pmd_val(pmd) & _PAGE_DEVMAP);
-}
-
-static inline pmd_t pmd_mkdevmap(pmd_t pmd)
-{
- pmd_val(pmd) |= _PAGE_DEVMAP;
- return pmd;
-}
-
static inline struct page *pmd_page(pmd_t pmd)
{
if (pmd_trans_huge(pmd))
@@ -613,11 +599,6 @@ static inline long pmd_protnone(pmd_t pmd)
#define pmd_leaf(pmd) ((pmd_val(pmd) & _PAGE_HUGE) != 0)
#define pud_leaf(pud) ((pud_val(pud) & _PAGE_HUGE) != 0)
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-#define pud_devmap(pud) (0)
-#define pgd_devmap(pgd) (0)
-#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-
/*
* We provide our own get_unmapped area to cope with the virtual aliasing
* constraints placed on us by the cache architecture.
@@ -149,7 +149,6 @@ config PPC
select ARCH_HAS_PMEM_API
select ARCH_HAS_PREEMPT_LAZY
select ARCH_HAS_PTDUMP
- select ARCH_HAS_PTE_DEVMAP if PPC_BOOK3S_64
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64
select ARCH_HAS_SET_MEMORY
@@ -160,12 +160,6 @@ extern pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm,
extern int hash__has_transparent_hugepage(void);
#endif
-static inline pmd_t hash__pmd_mkdevmap(pmd_t pmd)
-{
- BUG();
- return pmd;
-}
-
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_POWERPC_BOOK3S_64_HASH_4K_H */
@@ -259,7 +259,7 @@ static inline void mark_hpte_slot_valid(unsigned char *hpte_slot_array,
*/
static inline int hash__pmd_trans_huge(pmd_t pmd)
{
- return !!((pmd_val(pmd) & (_PAGE_PTE | H_PAGE_THP_HUGE | _PAGE_DEVMAP)) ==
+ return !!((pmd_val(pmd) & (_PAGE_PTE | H_PAGE_THP_HUGE)) ==
(_PAGE_PTE | H_PAGE_THP_HUGE));
}
@@ -281,11 +281,6 @@ extern pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm,
extern int hash__has_transparent_hugepage(void);
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-static inline pmd_t hash__pmd_mkdevmap(pmd_t pmd)
-{
- return __pmd(pmd_val(pmd) | (_PAGE_PTE | H_PAGE_THP_HUGE | _PAGE_DEVMAP));
-}
-
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_BOOK3S_64_HASH_64K_H */
@@ -88,7 +88,6 @@
#define _PAGE_SOFT_DIRTY _RPAGE_SW3 /* software: software dirty tracking */
#define _PAGE_SPECIAL _RPAGE_SW2 /* software: special page */
-#define _PAGE_DEVMAP _RPAGE_SW1 /* software: ZONE_DEVICE page */
/*
* Drivers request for cache inhibited pte mapping using _PAGE_NO_CACHE
@@ -109,7 +108,7 @@
*/
#define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
_PAGE_ACCESSED | H_PAGE_THP_HUGE | _PAGE_PTE | \
- _PAGE_SOFT_DIRTY | _PAGE_DEVMAP)
+ _PAGE_SOFT_DIRTY)
/*
* user access blocked by key
*/
@@ -123,7 +122,7 @@
*/
#define _PAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
_PAGE_ACCESSED | _PAGE_SPECIAL | _PAGE_PTE | \
- _PAGE_SOFT_DIRTY | _PAGE_DEVMAP)
+ _PAGE_SOFT_DIRTY)
/*
* We define 2 sets of base prot bits, one for basic pages (ie,
@@ -609,24 +608,6 @@ static inline pte_t pte_mkhuge(pte_t pte)
return pte;
}
-static inline pte_t pte_mkdevmap(pte_t pte)
-{
- return __pte_raw(pte_raw(pte) | cpu_to_be64(_PAGE_SPECIAL | _PAGE_DEVMAP));
-}
-
-/*
- * This is potentially called with a pmd as the argument, in which case it's not
- * safe to check _PAGE_DEVMAP unless we also confirm that _PAGE_PTE is set.
- * That's because the bit we use for _PAGE_DEVMAP is not reserved for software
- * use in page directory entries (ie. non-ptes).
- */
-static inline int pte_devmap(pte_t pte)
-{
- __be64 mask = cpu_to_be64(_PAGE_DEVMAP | _PAGE_PTE);
-
- return (pte_raw(pte) & mask) == mask;
-}
-
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
/* FIXME!! check whether this need to be a conditional */
@@ -1380,36 +1361,6 @@ static inline bool arch_needs_pgtable_deposit(void)
}
extern void serialize_against_pte_lookup(struct mm_struct *mm);
-
-static inline pmd_t pmd_mkdevmap(pmd_t pmd)
-{
- if (radix_enabled())
- return radix__pmd_mkdevmap(pmd);
- return hash__pmd_mkdevmap(pmd);
-}
-
-static inline pud_t pud_mkdevmap(pud_t pud)
-{
- if (radix_enabled())
- return radix__pud_mkdevmap(pud);
- BUG();
- return pud;
-}
-
-static inline int pmd_devmap(pmd_t pmd)
-{
- return pte_devmap(pmd_pte(pmd));
-}
-
-static inline int pud_devmap(pud_t pud)
-{
- return pte_devmap(pud_pte(pud));
-}
-
-static inline int pgd_devmap(pgd_t pgd)
-{
- return 0;
-}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
@@ -264,7 +264,7 @@ static inline int radix__p4d_bad(p4d_t p4d)
static inline int radix__pmd_trans_huge(pmd_t pmd)
{
- return (pmd_val(pmd) & (_PAGE_PTE | _PAGE_DEVMAP)) == _PAGE_PTE;
+ return (pmd_val(pmd) & _PAGE_PTE) == _PAGE_PTE;
}
static inline pmd_t radix__pmd_mkhuge(pmd_t pmd)
@@ -274,7 +274,7 @@ static inline pmd_t radix__pmd_mkhuge(pmd_t pmd)
static inline int radix__pud_trans_huge(pud_t pud)
{
- return (pud_val(pud) & (_PAGE_PTE | _PAGE_DEVMAP)) == _PAGE_PTE;
+ return (pud_val(pud) & _PAGE_PTE) == _PAGE_PTE;
}
static inline pud_t radix__pud_mkhuge(pud_t pud)
@@ -315,16 +315,6 @@ static inline int radix__has_transparent_pud_hugepage(void)
}
#endif
-static inline pmd_t radix__pmd_mkdevmap(pmd_t pmd)
-{
- return __pmd(pmd_val(pmd) | (_PAGE_PTE | _PAGE_DEVMAP));
-}
-
-static inline pud_t radix__pud_mkdevmap(pud_t pud)
-{
- return __pud(pud_val(pud) | (_PAGE_PTE | _PAGE_DEVMAP));
-}
-
struct vmem_altmap;
struct dev_pagemap;
extern int __meminit radix__vmemmap_create_mapping(unsigned long start,
@@ -44,7 +44,6 @@ config RISCV
select ARCH_HAS_PREEMPT_LAZY
select ARCH_HAS_PREPARE_SYNC_CORE_CMD
select ARCH_HAS_PTDUMP
- select ARCH_HAS_PTE_DEVMAP if 64BIT && MMU
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_DIRECT_MAP if MMU
select ARCH_HAS_SET_MEMORY if MMU
@@ -398,24 +398,4 @@ static inline struct page *pgd_page(pgd_t pgd)
#define p4d_offset p4d_offset
p4d_t *p4d_offset(pgd_t *pgd, unsigned long address);
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-static inline int pte_devmap(pte_t pte);
-static inline pte_t pmd_pte(pmd_t pmd);
-
-static inline int pmd_devmap(pmd_t pmd)
-{
- return pte_devmap(pmd_pte(pmd));
-}
-
-static inline int pud_devmap(pud_t pud)
-{
- return 0;
-}
-
-static inline int pgd_devmap(pgd_t pgd)
-{
- return 0;
-}
-#endif
-
#endif /* _ASM_RISCV_PGTABLE_64_H */
@@ -19,7 +19,6 @@
#define _PAGE_SOFT (3 << 8) /* Reserved for software */
#define _PAGE_SPECIAL (1 << 8) /* RSW: 0x1 */
-#define _PAGE_DEVMAP (1 << 9) /* RSW, devmap */
#define _PAGE_TABLE _PAGE_PRESENT
/*
@@ -399,13 +399,6 @@ static inline int pte_special(pte_t pte)
return pte_val(pte) & _PAGE_SPECIAL;
}
-#ifdef CONFIG_ARCH_HAS_PTE_DEVMAP
-static inline int pte_devmap(pte_t pte)
-{
- return pte_val(pte) & _PAGE_DEVMAP;
-}
-#endif
-
/* static inline pte_t pte_rdprotect(pte_t pte) */
static inline pte_t pte_wrprotect(pte_t pte)
@@ -447,11 +440,6 @@ static inline pte_t pte_mkspecial(pte_t pte)
return __pte(pte_val(pte) | _PAGE_SPECIAL);
}
-static inline pte_t pte_mkdevmap(pte_t pte)
-{
- return __pte(pte_val(pte) | _PAGE_DEVMAP);
-}
-
static inline pte_t pte_mkhuge(pte_t pte)
{
return pte;
@@ -763,11 +751,6 @@ static inline pmd_t pmd_mkdirty(pmd_t pmd)
return pte_pmd(pte_mkdirty(pmd_pte(pmd)));
}
-static inline pmd_t pmd_mkdevmap(pmd_t pmd)
-{
- return pte_pmd(pte_mkdevmap(pmd_pte(pmd)));
-}
-
static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t pmd)
{
@@ -97,7 +97,6 @@ config X86
select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
select ARCH_HAS_PMEM_API if X86_64
select ARCH_HAS_PREEMPT_LAZY
- select ARCH_HAS_PTE_DEVMAP if X86_64
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_HW_PTE_YOUNG
select ARCH_HAS_NONLEAF_PMD_YOUNG if PGTABLE_LEVELS > 2
@@ -308,16 +308,15 @@ static inline bool pmd_leaf(pmd_t pte)
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-/* NOTE: when predicate huge page, consider also pmd_devmap, or use pmd_leaf */
static inline int pmd_trans_huge(pmd_t pmd)
{
- return (pmd_val(pmd) & (_PAGE_PSE|_PAGE_DEVMAP)) == _PAGE_PSE;
+ return (pmd_val(pmd) & _PAGE_PSE) == _PAGE_PSE;
}
#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
static inline int pud_trans_huge(pud_t pud)
{
- return (pud_val(pud) & (_PAGE_PSE|_PAGE_DEVMAP)) == _PAGE_PSE;
+ return (pud_val(pud) & _PAGE_PSE) == _PAGE_PSE;
}
#endif
@@ -327,24 +326,6 @@ static inline int has_transparent_hugepage(void)
return boot_cpu_has(X86_FEATURE_PSE);
}
-#ifdef CONFIG_ARCH_HAS_PTE_DEVMAP
-static inline int pmd_devmap(pmd_t pmd)
-{
- return !!(pmd_val(pmd) & _PAGE_DEVMAP);
-}
-
-#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
-static inline int pud_devmap(pud_t pud)
-{
- return !!(pud_val(pud) & _PAGE_DEVMAP);
-}
-#else
-static inline int pud_devmap(pud_t pud)
-{
- return 0;
-}
-#endif
-
#ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP
static inline bool pmd_special(pmd_t pmd)
{
@@ -368,12 +349,6 @@ static inline pud_t pud_mkspecial(pud_t pud)
return pud_set_flags(pud, _PAGE_SPECIAL);
}
#endif /* CONFIG_ARCH_SUPPORTS_PUD_PFNMAP */
-
-static inline int pgd_devmap(pgd_t pgd)
-{
- return 0;
-}
-#endif
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
static inline pte_t pte_set_flags(pte_t pte, pteval_t set)
@@ -534,11 +509,6 @@ static inline pte_t pte_mkspecial(pte_t pte)
return pte_set_flags(pte, _PAGE_SPECIAL);
}
-static inline pte_t pte_mkdevmap(pte_t pte)
-{
- return pte_set_flags(pte, _PAGE_SPECIAL|_PAGE_DEVMAP);
-}
-
/* See comments above mksaveddirty_shift() */
static inline pmd_t pmd_mksaveddirty(pmd_t pmd)
{
@@ -610,11 +580,6 @@ static inline pmd_t pmd_mkwrite_shstk(pmd_t pmd)
return pmd_set_flags(pmd, _PAGE_DIRTY);
}
-static inline pmd_t pmd_mkdevmap(pmd_t pmd)
-{
- return pmd_set_flags(pmd, _PAGE_DEVMAP);
-}
-
static inline pmd_t pmd_mkhuge(pmd_t pmd)
{
return pmd_set_flags(pmd, _PAGE_PSE);
@@ -680,11 +645,6 @@ static inline pud_t pud_mkdirty(pud_t pud)
return pud_mksaveddirty(pud);
}
-static inline pud_t pud_mkdevmap(pud_t pud)
-{
- return pud_set_flags(pud, _PAGE_DEVMAP);
-}
-
static inline pud_t pud_mkhuge(pud_t pud)
{
return pud_set_flags(pud, _PAGE_PSE);
@@ -1012,13 +972,6 @@ static inline int pte_present(pte_t a)
return pte_flags(a) & (_PAGE_PRESENT | _PAGE_PROTNONE);
}
-#ifdef CONFIG_ARCH_HAS_PTE_DEVMAP
-static inline int pte_devmap(pte_t a)
-{
- return (pte_flags(a) & _PAGE_DEVMAP) == _PAGE_DEVMAP;
-}
-#endif
-
#define pte_accessible pte_accessible
static inline bool pte_accessible(struct mm_struct *mm, pte_t a)
{
@@ -33,7 +33,6 @@
#define _PAGE_BIT_CPA_TEST _PAGE_BIT_SOFTW1
#define _PAGE_BIT_UFFD_WP _PAGE_BIT_SOFTW2 /* userfaultfd wrprotected */
#define _PAGE_BIT_SOFT_DIRTY _PAGE_BIT_SOFTW3 /* software dirty tracking */
-#define _PAGE_BIT_DEVMAP _PAGE_BIT_SOFTW4
#ifdef CONFIG_X86_64
#define _PAGE_BIT_SAVED_DIRTY _PAGE_BIT_SOFTW5 /* Saved Dirty bit (leaf) */
@@ -119,11 +118,9 @@
#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
-#define _PAGE_DEVMAP (_AT(u64, 1) << _PAGE_BIT_DEVMAP)
#define _PAGE_SOFTW4 (_AT(pteval_t, 1) << _PAGE_BIT_SOFTW4)
#else
#define _PAGE_NX (_AT(pteval_t, 0))
-#define _PAGE_DEVMAP (_AT(pteval_t, 0))
#define _PAGE_SOFTW4 (_AT(pteval_t, 0))
#endif
@@ -152,7 +149,7 @@
#define _COMMON_PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
_PAGE_SPECIAL | _PAGE_ACCESSED | \
_PAGE_DIRTY_BITS | _PAGE_SOFT_DIRTY | \
- _PAGE_DEVMAP | _PAGE_CC | _PAGE_UFFD_WP)
+ _PAGE_CC | _PAGE_UFFD_WP)
#define _PAGE_CHG_MASK (_COMMON_PAGE_CHG_MASK | _PAGE_PAT)
#define _HPAGE_CHG_MASK (_COMMON_PAGE_CHG_MASK | _PAGE_PSE | _PAGE_PAT_LARGE)
@@ -2803,13 +2803,6 @@ static inline pud_t pud_mkspecial(pud_t pud)
}
#endif /* CONFIG_ARCH_SUPPORTS_PUD_PFNMAP */
-#ifndef CONFIG_ARCH_HAS_PTE_DEVMAP
-static inline int pte_devmap(pte_t pte)
-{
- return 0;
-}
-#endif
-
extern pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
spinlock_t **ptl);
static inline pte_t *get_locked_pte(struct mm_struct *mm, unsigned long addr,
@@ -1606,21 +1606,6 @@ static inline int pud_write(pud_t pud)
}
#endif /* pud_write */
-#if !defined(CONFIG_ARCH_HAS_PTE_DEVMAP) || !defined(CONFIG_TRANSPARENT_HUGEPAGE)
-static inline int pmd_devmap(pmd_t pmd)
-{
- return 0;
-}
-static inline int pud_devmap(pud_t pud)
-{
- return 0;
-}
-static inline int pgd_devmap(pgd_t pgd)
-{
- return 0;
-}
-#endif
-
#if !defined(CONFIG_TRANSPARENT_HUGEPAGE) || \
!defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
static inline int pud_trans_huge(pud_t pud)
@@ -1875,8 +1860,8 @@ typedef unsigned int pgtbl_mod_mask;
* - It should contain a huge PFN, which points to a huge page larger than
* PAGE_SIZE of the platform. The PFN format isn't important here.
*
- * - It should cover all kinds of huge mappings (e.g., pXd_trans_huge(),
- * pXd_devmap(), or hugetlb mappings).
+ * - It should cover all kinds of huge mappings (i.e. pXd_trans_huge()
+ * or hugetlb mappings).
*/
#ifndef pgd_leaf
#define pgd_leaf(x) false
@@ -1040,9 +1040,6 @@ config ARCH_HAS_CURRENT_STACK_POINTER
register alias named "current_stack_pointer", this config can be
selected.
-config ARCH_HAS_PTE_DEVMAP
- bool
-
config ARCH_HAS_ZONE_DMA_SET
bool
@@ -1060,7 +1057,6 @@ config ZONE_DEVICE
depends on MEMORY_HOTPLUG
depends on MEMORY_HOTREMOVE
depends on SPARSEMEM_VMEMMAP
- depends on ARCH_HAS_PTE_DEVMAP
select XARRAY_MULTI
help
@@ -348,12 +348,6 @@ static void __init pud_advanced_tests(struct pgtable_debug_args *args)
vaddr &= HPAGE_PUD_MASK;
pud = pfn_pud(args->pud_pfn, args->page_prot);
- /*
- * Some architectures have debug checks to make sure
- * huge pud mapping are only found with devmap entries
- * For now test with only devmap entries.
- */
- pud = pud_mkdevmap(pud);
set_pud_at(args->mm, vaddr, args->pudp, pud);
flush_dcache_page(page);
pudp_set_wrprotect(args->mm, vaddr, args->pudp);
@@ -366,7 +360,6 @@ static void __init pud_advanced_tests(struct pgtable_debug_args *args)
WARN_ON(!pud_none(pud));
#endif /* __PAGETABLE_PMD_FOLDED */
pud = pfn_pud(args->pud_pfn, args->page_prot);
- pud = pud_mkdevmap(pud);
pud = pud_wrprotect(pud);
pud = pud_mkclean(pud);
set_pud_at(args->mm, vaddr, args->pudp, pud);
@@ -384,7 +377,6 @@ static void __init pud_advanced_tests(struct pgtable_debug_args *args)
#endif /* __PAGETABLE_PMD_FOLDED */
pud = pfn_pud(args->pud_pfn, args->page_prot);
- pud = pud_mkdevmap(pud);
pud = pud_mkyoung(pud);
set_pud_at(args->mm, vaddr, args->pudp, pud);
flush_dcache_page(page);
@@ -693,53 +685,6 @@ static void __init pmd_protnone_tests(struct pgtable_debug_args *args)
static void __init pmd_protnone_tests(struct pgtable_debug_args *args) { }
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-#ifdef CONFIG_ARCH_HAS_PTE_DEVMAP
-static void __init pte_devmap_tests(struct pgtable_debug_args *args)
-{
- pte_t pte = pfn_pte(args->fixed_pte_pfn, args->page_prot);
-
- pr_debug("Validating PTE devmap\n");
- WARN_ON(!pte_devmap(pte_mkdevmap(pte)));
-}
-
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-static void __init pmd_devmap_tests(struct pgtable_debug_args *args)
-{
- pmd_t pmd;
-
- if (!has_transparent_hugepage())
- return;
-
- pr_debug("Validating PMD devmap\n");
- pmd = pfn_pmd(args->fixed_pmd_pfn, args->page_prot);
- WARN_ON(!pmd_devmap(pmd_mkdevmap(pmd)));
-}
-
-#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
-static void __init pud_devmap_tests(struct pgtable_debug_args *args)
-{
- pud_t pud;
-
- if (!has_transparent_pud_hugepage())
- return;
-
- pr_debug("Validating PUD devmap\n");
- pud = pfn_pud(args->fixed_pud_pfn, args->page_prot);
- WARN_ON(!pud_devmap(pud_mkdevmap(pud)));
-}
-#else /* !CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */
-static void __init pud_devmap_tests(struct pgtable_debug_args *args) { }
-#endif /* CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */
-#else /* CONFIG_TRANSPARENT_HUGEPAGE */
-static void __init pmd_devmap_tests(struct pgtable_debug_args *args) { }
-static void __init pud_devmap_tests(struct pgtable_debug_args *args) { }
-#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-#else
-static void __init pte_devmap_tests(struct pgtable_debug_args *args) { }
-static void __init pmd_devmap_tests(struct pgtable_debug_args *args) { }
-static void __init pud_devmap_tests(struct pgtable_debug_args *args) { }
-#endif /* CONFIG_ARCH_HAS_PTE_DEVMAP */
-
static void __init pte_soft_dirty_tests(struct pgtable_debug_args *args)
{
pte_t pte = pfn_pte(args->fixed_pte_pfn, args->page_prot);
@@ -1341,10 +1286,6 @@ static int __init debug_vm_pgtable(void)
pte_protnone_tests(&args);
pmd_protnone_tests(&args);
- pte_devmap_tests(&args);
- pmd_devmap_tests(&args);
- pud_devmap_tests(&args);
-
pte_soft_dirty_tests(&args);
pmd_soft_dirty_tests(&args);
pte_swap_soft_dirty_tests(&args);
@@ -393,8 +393,7 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp,
return 0;
}
-#if defined(CONFIG_ARCH_HAS_PTE_DEVMAP) && \
- defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
+#if defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
static inline unsigned long pud_to_hmm_pfn_flags(struct hmm_range *range,
pud_t pud)
{
@@ -1066,7 +1066,7 @@ static int guard_install_pud_entry(pud_t *pud, unsigned long addr,
pud_t pudval = pudp_get(pud);
/* If huge return >0 so we abort the operation + zap. */
- return pud_trans_huge(pudval) || pud_devmap(pudval);
+ return pud_trans_huge(pudval);
}
static int guard_install_pmd_entry(pmd_t *pmd, unsigned long addr,
@@ -1075,7 +1075,7 @@ static int guard_install_pmd_entry(pmd_t *pmd, unsigned long addr,
pmd_t pmdval = pmdp_get(pmd);
/* If huge return >0 so we abort the operation + zap. */
- return pmd_trans_huge(pmdval) || pmd_devmap(pmdval);
+ return pmd_trans_huge(pmdval);
}
static int guard_install_pte_entry(pte_t *pte, unsigned long addr,
@@ -1186,7 +1186,7 @@ static int guard_remove_pud_entry(pud_t *pud, unsigned long addr,
pud_t pudval = pudp_get(pud);
/* If huge, cannot have guard pages present, so no-op - skip. */
- if (pud_trans_huge(pudval) || pud_devmap(pudval))
+ if (pud_trans_huge(pudval))
walk->action = ACTION_CONTINUE;
return 0;
@@ -1198,7 +1198,7 @@ static int guard_remove_pmd_entry(pmd_t *pmd, unsigned long addr,
pmd_t pmdval = pmdp_get(pmd);
/* If huge, cannot have guard pages present, so no-op - skip. */
- if (pmd_trans_huge(pmdval) || pmd_devmap(pmdval))
+ if (pmd_trans_huge(pmdval))
walk->action = ACTION_CONTINUE;
return 0;