diff options
Diffstat (limited to 'arch/s390/mm/vmem.c')
| -rw-r--r-- | arch/s390/mm/vmem.c | 44 |
1 files changed, 28 insertions, 16 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index 01f3a5f58e64..96897fab89dc 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -4,6 +4,7 @@ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> */ +#include <linux/memory_hotplug.h> #include <linux/memblock.h> #include <linux/pfn.h> #include <linux/mm.h> @@ -26,14 +27,14 @@ static void __ref *vmem_alloc_pages(unsigned int order) if (slab_is_available()) return (void *)__get_free_pages(GFP_KERNEL, order); - return (void *) memblock_phys_alloc(size, size); + return memblock_alloc(size, size); } static void vmem_free_pages(unsigned long addr, int order) { /* We don't expect boot memory to be removed ever. */ if (!slab_is_available() || - WARN_ON_ONCE(PageReserved(phys_to_page(addr)))) + WARN_ON_ONCE(PageReserved(virt_to_page(addr)))) return; free_pages(addr, order); } @@ -56,7 +57,7 @@ pte_t __ref *vmem_pte_alloc(void) if (slab_is_available()) pte = (pte_t *) page_table_alloc(&init_mm); else - pte = (pte_t *) memblock_phys_alloc(size, size); + pte = (pte_t *) memblock_alloc(size, size); if (!pte) return NULL; memset64((u64 *)pte, _PAGE_INVALID, PTRS_PER_PTE); @@ -84,7 +85,7 @@ static void vmemmap_flush_unused_sub_pmd(void) { if (!unused_sub_pmd_start) return; - memset(__va(unused_sub_pmd_start), PAGE_UNUSED, + memset((void *)unused_sub_pmd_start, PAGE_UNUSED, ALIGN(unused_sub_pmd_start, PMD_SIZE) - unused_sub_pmd_start); unused_sub_pmd_start = 0; } @@ -97,7 +98,7 @@ static void vmemmap_mark_sub_pmd_used(unsigned long start, unsigned long end) * getting removed (just in case the memmap never gets initialized, * e.g., because the memory block never gets onlined). */ - memset(__va(start), 0, sizeof(struct page)); + memset((void *)start, 0, sizeof(struct page)); } static void vmemmap_use_sub_pmd(unsigned long start, unsigned long end) @@ -118,7 +119,7 @@ static void vmemmap_use_sub_pmd(unsigned long start, unsigned long end) static void vmemmap_use_new_sub_pmd(unsigned long start, unsigned long end) { - void *page = __va(ALIGN_DOWN(start, PMD_SIZE)); + unsigned long page = ALIGN_DOWN(start, PMD_SIZE); vmemmap_flush_unused_sub_pmd(); @@ -127,7 +128,7 @@ static void vmemmap_use_new_sub_pmd(unsigned long start, unsigned long end) /* Mark the unused parts of the new memmap page PAGE_UNUSED. */ if (!IS_ALIGNED(start, PMD_SIZE)) - memset(page, PAGE_UNUSED, start - __pa(page)); + memset((void *)page, PAGE_UNUSED, start - page); /* * We want to avoid memset(PAGE_UNUSED) when populating the vmemmap of * consecutive sections. Remember for the last added PMD the last @@ -140,11 +141,11 @@ static void vmemmap_use_new_sub_pmd(unsigned long start, unsigned long end) /* Returns true if the PMD is completely unused and can be freed. */ static bool vmemmap_unuse_sub_pmd(unsigned long start, unsigned long end) { - void *page = __va(ALIGN_DOWN(start, PMD_SIZE)); + unsigned long page = ALIGN_DOWN(start, PMD_SIZE); vmemmap_flush_unused_sub_pmd(); - memset(__va(start), PAGE_UNUSED, end - start); - return !memchr_inv(page, PAGE_UNUSED, PMD_SIZE); + memset((void *)start, PAGE_UNUSED, end - start); + return !memchr_inv((void *)page, PAGE_UNUSED, PMD_SIZE); } /* __ref: we'll only call vmemmap_alloc_block() via vmemmap_populate() */ @@ -165,7 +166,7 @@ static int __ref modify_pte_table(pmd_t *pmd, unsigned long addr, if (pte_none(*pte)) continue; if (!direct) - vmem_free_pages(pfn_to_phys(pte_pfn(*pte)), 0); + vmem_free_pages((unsigned long) pfn_to_virt(pte_pfn(*pte)), 0); pte_clear(&init_mm, addr, pte); } else if (pte_none(*pte)) { if (!direct) { @@ -175,7 +176,7 @@ static int __ref modify_pte_table(pmd_t *pmd, unsigned long addr, goto out; pte_val(*pte) = __pa(new_page) | prot; } else { - pte_val(*pte) = addr | prot; + pte_val(*pte) = __pa(addr) | prot; } } else { continue; @@ -200,7 +201,7 @@ static void try_free_pte_table(pmd_t *pmd, unsigned long start) if (!pte_none(*pte)) return; } - vmem_pte_free(__va(pmd_deref(*pmd))); + vmem_pte_free((unsigned long *) pmd_deref(*pmd)); pmd_clear(pmd); } @@ -241,7 +242,7 @@ static int __ref modify_pmd_table(pud_t *pud, unsigned long addr, IS_ALIGNED(next, PMD_SIZE) && MACHINE_HAS_EDAT1 && addr && direct && !debug_pagealloc_enabled()) { - pmd_val(*pmd) = addr | prot; + pmd_val(*pmd) = __pa(addr) | prot; pages++; continue; } else if (!direct && MACHINE_HAS_EDAT1) { @@ -337,7 +338,7 @@ static int modify_pud_table(p4d_t *p4d, unsigned long addr, unsigned long end, IS_ALIGNED(next, PUD_SIZE) && MACHINE_HAS_EDAT2 && addr && direct && !debug_pagealloc_enabled()) { - pud_val(*pud) = addr | prot; + pud_val(*pud) = __pa(addr) | prot; pages++; continue; } @@ -532,11 +533,22 @@ void vmem_remove_mapping(unsigned long start, unsigned long size) mutex_unlock(&vmem_mutex); } +struct range arch_get_mappable_range(void) +{ + struct range mhp_range; + + mhp_range.start = 0; + mhp_range.end = VMEM_MAX_PHYS - 1; + return mhp_range; +} + int vmem_add_mapping(unsigned long start, unsigned long size) { + struct range range = arch_get_mappable_range(); int ret; - if (start + size > VMEM_MAX_PHYS || + if (start < range.start || + start + size > range.end + 1 || start + size < start) return -ERANGE; |