Commit a3e1c937 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

x86: implement the new page table range API 

Add PFN_PTE_SHIFT and a noop update_mmu_cache_range().

Link: https://lkml.kernel.org/r/20230802151406.3735276-29-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: default avatarMike Rapoport (IBM) <rppt@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent fd8132e6

arch/x86/include/asm/pgtable.h

+7 −7
Original line number Diff line number Diff line
@@ -185,6 +185,8 @@ static inline int pte_special(pte_t pte) 


static inline u64 protnone_mask(u64 val);



#define PFN_PTE_SHIFT	PAGE_SHIFT



static inline unsigned long pte_pfn(pte_t pte)

{

	phys_addr_t pfn = pte_val(pte);
@@ -1020,13 +1022,6 @@ static inline pud_t native_local_pudp_get_and_clear(pud_t *pudp) 
	return res;

}



static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,

			      pte_t *ptep, pte_t pte)

{

	page_table_check_ptes_set(mm, ptep, pte, 1);

	set_pte(ptep, pte);

}



static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,

			      pmd_t *pmdp, pmd_t pmd)

{
@@ -1292,6 +1287,11 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, 
		unsigned long addr, pte_t *ptep)

{

}

static inline void update_mmu_cache_range(struct vm_fault *vmf,

		struct vm_area_struct *vma, unsigned long addr,

		pte_t *ptep, unsigned int nr)

{

}

static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,

		unsigned long addr, pmd_t *pmd)

{