diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 53 |
1 files changed, 43 insertions, 10 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index bd5d91a31183..84d171953ba4 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -17,16 +17,19 @@ #include <linux/suspend.h> #include <linux/dma-direct.h> +#include <asm/swiotlb.h> #include <asm/machdep.h> #include <asm/rtas.h> #include <asm/kasan.h> #include <asm/svm.h> #include <asm/mmzone.h> +#include <asm/ftrace.h> +#include <asm/code-patching.h> +#include <asm/setup.h> #include <mm/mmu_decl.h> unsigned long long memory_limit; -bool init_mem_is_free; unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] __page_aligned_bss; EXPORT_SYMBOL(empty_zero_page); @@ -52,6 +55,7 @@ int memory_add_physaddr_to_nid(u64 start) { return hot_add_scn_to_nid(start); } +EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); #endif int __weak create_section_mapping(unsigned long start, unsigned long end, @@ -103,6 +107,37 @@ void __ref arch_remove_linear_mapping(u64 start, u64 size) vm_unmap_aliases(); } +/* + * After memory hotplug the variables max_pfn, max_low_pfn and high_memory need + * updating. + */ +static void update_end_of_memory_vars(u64 start, u64 size) +{ + unsigned long end_pfn = PFN_UP(start + size); + + if (end_pfn > max_pfn) { + max_pfn = end_pfn; + max_low_pfn = end_pfn; + high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; + } +} + +int __ref add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages, + struct mhp_params *params) +{ + int ret; + + ret = __add_pages(nid, start_pfn, nr_pages, params); + if (ret) + return ret; + + /* update max_pfn, max_low_pfn and high_memory */ + update_end_of_memory_vars(start_pfn << PAGE_SHIFT, + nr_pages << PAGE_SHIFT); + + return ret; +} + int __ref arch_add_memory(int nid, u64 start, u64 size, struct mhp_params *params) { @@ -113,7 +148,7 @@ int __ref arch_add_memory(int nid, u64 start, u64 size, rc = arch_create_linear_mapping(nid, start, size, params); if (rc) return rc; - rc = __add_pages(nid, start_pfn, nr_pages, params); + rc = add_pages(nid, start_pfn, nr_pages, params); if (rc) arch_remove_linear_mapping(start, size); return rc; @@ -249,14 +284,11 @@ void __init mem_init(void) * back to to-down. */ memblock_set_bottom_up(true); - if (is_secure_guest()) - svm_swiotlb_init(); - else - swiotlb_init(0); + swiotlb_init(ppc_swiotlb_enable, ppc_swiotlb_flags); #endif high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); - set_max_mapnr(max_low_pfn); + set_max_mapnr(max_pfn); kasan_late_init(); @@ -270,13 +302,13 @@ void __init mem_init(void) for (pfn = highmem_mapnr; pfn < max_mapnr; ++pfn) { phys_addr_t paddr = (phys_addr_t)pfn << PAGE_SHIFT; struct page *page = pfn_to_page(pfn); - if (!memblock_is_reserved(paddr)) + if (memblock_is_memory(paddr) && !memblock_is_reserved(paddr)) free_highmem_page(page); } } #endif /* CONFIG_HIGHMEM */ -#if defined(CONFIG_PPC_FSL_BOOK3E) && !defined(CONFIG_SMP) +#if defined(CONFIG_PPC_E500) && !defined(CONFIG_SMP) /* * If smp is enabled, next_tlbcam_idx is initialized in the cpu up * functions.... do it here for the non-smp case. @@ -312,8 +344,9 @@ void free_initmem(void) { ppc_md.progress = ppc_printk_progress; mark_initmem_nx(); - init_mem_is_free = true; + static_branch_enable(&init_mem_is_free); free_initmem_default(POISON_FREE_INITMEM); + ftrace_free_init_tramp(); } /* |