diff options
| author | Andrea Reale <ar@linux.vnet.ibm.com> | 2017-04-28 14:18:26 +0530 |
|---|---|---|
| committer | Arun KS <arunks@codeaurora.org> | 2017-11-22 08:14:21 +0530 |
| commit | efdbaef3e11a8a82f741baddad7d47f8606798aa (patch) | |
| tree | b62f558a5e2e808f4ce5f9d2161851e374fa7b95 /arch/arm64/include/asm | |
| parent | 9bade51dc7091483390dca012a6e14895b81253c (diff) | |
arm64: Hot-remove implementation for arm64
- arch_remove_memory interface
- kernel page tables cleanup
- vmemmap_free implementation for arm64
Change-Id: I8945b6b91ed7012abc1478de266302427ebeb639
Signed-off-by: Andrea Reale <ar@linux.vnet.ibm.com>
Signed-off-by: Maciej Bielski <m.bielski@virtualopensystems.com>
Patch-mainline: linux-kernel @ 11 Apr 2017, 18:25
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: Arun KS <arunks@codeaurora.org>
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/mmu.h | 4 | ||||
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 15 |
2 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/mmu.h b/arch/arm64/include/asm/mmu.h index 0944bfc04f5b..7ad6b91d12c5 100644 --- a/arch/arm64/include/asm/mmu.h +++ b/arch/arm64/include/asm/mmu.h @@ -37,6 +37,10 @@ extern void create_pgd_mapping(struct mm_struct *mm, phys_addr_t phys, extern void *fixmap_remap_fdt(phys_addr_t dt_phys); #ifdef CONFIG_MEMORY_HOTPLUG extern void hotplug_paging(phys_addr_t start, phys_addr_t size); +#ifdef CONFIG_MEMORY_HOTREMOVE +extern void remove_pagetable(unsigned long start, + unsigned long end, bool direct); +#endif #endif #endif diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 72b1c3fa1576..ecd7dc14330c 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -461,6 +461,11 @@ static inline phys_addr_t pmd_page_paddr(pmd_t pmd) return pmd_val(pmd) & PHYS_MASK & (s32)PAGE_MASK; } +static inline unsigned long pmd_page_vaddr(pmd_t pmd) +{ + return (unsigned long) __va(pmd_page_paddr(pmd)); +} + /* Find an entry in the third-level page table. */ #define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) @@ -512,6 +517,11 @@ static inline phys_addr_t pud_page_paddr(pud_t pud) return pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK; } +static inline unsigned long pud_page_vaddr(pud_t pud) +{ + return (unsigned long) __va(pud_page_paddr(pud)); +} + /* Find an entry in the second-level page table. */ #define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)) @@ -564,6 +574,11 @@ static inline phys_addr_t pgd_page_paddr(pgd_t pgd) return pgd_val(pgd) & PHYS_MASK & (s32)PAGE_MASK; } +static inline unsigned long pgd_page_vaddr(pgd_t pgd) +{ + return (unsigned long) __va(pgd_page_paddr(pgd)); +} + /* Find an entry in the frst-level page table. */ #define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) |