add lvds1024*800

hc

2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920

 kernel/arch/x86/include/asm/pgtable_64.h
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@@ -53,6 +53,12 @@
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53
 
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 struct mm_struct;
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+#define mm_p4d_folded mm_p4d_folded
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+static inline bool mm_p4d_folded(struct mm_struct *mm)
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+{
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+	return !pgtable_l5_enabled();
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+}
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+
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 void set_pte_vaddr_p4d(p4d_t *p4d_page, unsigned long vaddr, pte_t new_pte);
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 void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte);
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64
 
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@@ -162,34 +168,25 @@
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 	native_set_pgd(pgd, native_make_pgd(0));
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 }
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-extern void sync_global_pgds(unsigned long start, unsigned long end);
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-
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 /*
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  * Conversion functions: convert a page and protection to a page entry,
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  * and a page entry and page directory to the page they refer to.
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  */
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-/*
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- * Level 4 access.
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- */
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-#define mk_kernel_pgd(address) __pgd((address) | _KERNPG_TABLE)
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+/* PGD - Level 4 access */
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-/* PUD - Level3 access */
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+/* PUD - Level 3 access */
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-/* PMD  - Level 2 access */
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+/* PMD - Level 2 access */
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-/* PTE - Level 1 access. */
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-
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-/* x86-64 always has all page tables mapped. */
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-#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
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-#define pte_unmap(pte) ((void)(pte))/* NOP */
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+/* PTE - Level 1 access */
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183
 
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 /*
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  * Encode and de-code a swap entry
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  *
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  * |     ...            | 11| 10|  9|8|7|6|5| 4| 3|2| 1|0| <- bit number
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  * |     ...            |SW3|SW2|SW1|G|L|D|A|CD|WT|U| W|P| <- bit names
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- * | TYPE (59-63) | ~OFFSET (9-58)  |0|0|X|X| X| X|X|SD|0| <- swp entry
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+ * | TYPE (59-63) | ~OFFSET (9-58)  |0|0|X|X| X| X|F|SD|0| <- swp entry
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  *
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  * G (8) is aliased and used as a PROT_NONE indicator for
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  * !present ptes.  We need to start storing swap entries above
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@@ -197,8 +194,14 @@
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  * erratum where they can be incorrectly set by hardware on
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  * non-present PTEs.
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  *
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+ * SD Bits 1-4 are not used in non-present format and available for
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+ * special use described below:
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+ *
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  * SD (1) in swp entry is used to store soft dirty bit, which helps us
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  * remember soft dirty over page migration
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+ *
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+ * F (2) in swp entry is used to record when a pagetable is
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+ * writeprotected by userfaultfd WP support.
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  *
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  * Bit 7 in swp entry should be 0 because pmd_present checks not only P,
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  * but also L and G.
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@@ -232,17 +235,14 @@
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 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val((pte)) })
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 #define __pmd_to_swp_entry(pmd)		((swp_entry_t) { pmd_val((pmd)) })
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-#define __swp_entry_to_pte(x)		((pte_t) { .pte = (x).val })
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-#define __swp_entry_to_pmd(x)		((pmd_t) { .pmd = (x).val })
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+#define __swp_entry_to_pte(x)		(__pte((x).val))
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+#define __swp_entry_to_pmd(x)		(__pmd((x).val))
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 extern int kern_addr_valid(unsigned long addr);
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 extern void cleanup_highmap(void);
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 #define HAVE_ARCH_UNMAPPED_AREA
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 #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
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-
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-#define pgtable_cache_init()   do { } while (0)
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-#define check_pgt_cache()      do { } while (0)
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 #define PAGE_AGP    PAGE_KERNEL_NOCACHE
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 #define HAVE_PAGE_AGP 1
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@@ -259,15 +259,8 @@
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 extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
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 #define gup_fast_permitted gup_fast_permitted
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-static inline bool gup_fast_permitted(unsigned long start, int nr_pages,
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-		int write)
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+static inline bool gup_fast_permitted(unsigned long start, unsigned long end)
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 {
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-	unsigned long len, end;
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-
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-	len = (unsigned long)nr_pages << PAGE_SHIFT;
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-	end = start + len;
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-	if (end < start)
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-		return false;
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 	if (end >> __VIRTUAL_MASK_SHIFT)
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 		return false;
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 	return true;