diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-10 02:26:14 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-10 02:26:14 (GMT) |
commit | 0cf744bc7ae8e0072159a901f6e1a159bbc30ffa (patch) | |
tree | fc8222a3a5af4f42226070c3f76462cfcf0b4e50 /arch/arm | |
parent | b528392669415dc1e53a047215e5ad6c2de879fc (diff) | |
parent | 7f8998c7aef3ac9c5f3f2943e083dfa6302e90d0 (diff) | |
download | linux-0cf744bc7ae8e0072159a901f6e1a159bbc30ffa.tar.xz |
Merge branch 'akpm' (fixes from Andrew Morton)
Merge patch-bomb from Andrew Morton:
- part of OCFS2 (review is laggy again)
- procfs
- slab
- all of MM
- zram, zbud
- various other random things: arch, filesystems.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits)
nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
include/linux/screen_info.h: remove unused ORIG_* macros
kernel/sys.c: compat sysinfo syscall: fix undefined behavior
kernel/sys.c: whitespace fixes
acct: eliminate compile warning
kernel/async.c: switch to pr_foo()
include/linux/blkdev.h: use NULL instead of zero
include/linux/kernel.h: deduplicate code implementing clamp* macros
include/linux/kernel.h: rewrite min3, max3 and clamp using min and max
alpha: use Kbuild logic to include <asm-generic/sections.h>
frv: remove deprecated IRQF_DISABLED
frv: remove unused cpuinfo_frv and friends to fix future build error
zbud: avoid accessing last unused freelist
zsmalloc: simplify init_zspage free obj linking
mm/zsmalloc.c: correct comment for fullness group computation
zram: use notify_free to account all free notifications
zram: report maximum used memory
zram: zram memory size limitation
zsmalloc: change return value unit of zs_get_total_size_bytes
zsmalloc: move pages_allocated to zs_pool
...
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/Kconfig | 6 | ||||
-rw-r--r-- | arch/arm/include/asm/pgtable-2level.h | 2 | ||||
-rw-r--r-- | arch/arm/include/asm/pgtable-3level.h | 15 | ||||
-rw-r--r-- | arch/arm/include/asm/pgtable.h | 6 | ||||
-rw-r--r-- | arch/arm/include/asm/tlb.h | 38 | ||||
-rw-r--r-- | arch/arm/kernel/hibernate.c | 3 | ||||
-rw-r--r-- | arch/arm/mm/dma-mapping.c | 210 | ||||
-rw-r--r-- | arch/arm/mm/flush.c | 15 | ||||
-rw-r--r-- | arch/arm/mm/init.c | 2 |
9 files changed, 136 insertions, 161 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index d9d32de..18f392f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -14,6 +14,7 @@ config ARM select CLONE_BACKWARDS select CPU_PM if (SUSPEND || CPU_IDLE) select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS + select GENERIC_ALLOCATOR select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI) select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_IDLE_POLL_SETUP @@ -61,6 +62,7 @@ config ARM select HAVE_PERF_EVENTS select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP + select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE) select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_SYSCALL_TRACEPOINTS select HAVE_UID16 @@ -1659,6 +1661,10 @@ config ARCH_SELECT_MEMORY_MODEL config HAVE_ARCH_PFN_VALID def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM +config HAVE_GENERIC_RCU_GUP + def_bool y + depends on ARM_LPAE + config HIGHMEM bool "High Memory Support" depends on MMU diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h index 219ac88..f027941 100644 --- a/arch/arm/include/asm/pgtable-2level.h +++ b/arch/arm/include/asm/pgtable-2level.h @@ -182,6 +182,8 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) #define pmd_addr_end(addr,end) (end) #define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,pte,ext) +#define pte_special(pte) (0) +static inline pte_t pte_mkspecial(pte_t pte) { return pte; } /* * We don't have huge page support for short descriptors, for the moment diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index 06e0bc0..a31ecdad 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -213,10 +213,19 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) #define pmd_isclear(pmd, val) (!(pmd_val(pmd) & (val))) #define pmd_young(pmd) (pmd_isset((pmd), PMD_SECT_AF)) +#define pte_special(pte) (pte_isset((pte), L_PTE_SPECIAL)) +static inline pte_t pte_mkspecial(pte_t pte) +{ + pte_val(pte) |= L_PTE_SPECIAL; + return pte; +} +#define __HAVE_ARCH_PTE_SPECIAL #define __HAVE_ARCH_PMD_WRITE #define pmd_write(pmd) (pmd_isclear((pmd), L_PMD_SECT_RDONLY)) #define pmd_dirty(pmd) (pmd_isset((pmd), L_PMD_SECT_DIRTY)) +#define pud_page(pud) pmd_page(__pmd(pud_val(pud))) +#define pud_write(pud) pmd_write(__pmd(pud_val(pud))) #define pmd_hugewillfault(pmd) (!pmd_young(pmd) || !pmd_write(pmd)) #define pmd_thp_or_huge(pmd) (pmd_huge(pmd) || pmd_trans_huge(pmd)) @@ -224,6 +233,12 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) #ifdef CONFIG_TRANSPARENT_HUGEPAGE #define pmd_trans_huge(pmd) (pmd_val(pmd) && !pmd_table(pmd)) #define pmd_trans_splitting(pmd) (pmd_isset((pmd), L_PMD_SECT_SPLITTING)) + +#ifdef CONFIG_HAVE_RCU_TABLE_FREE +#define __HAVE_ARCH_PMDP_SPLITTING_FLUSH +void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp); +#endif #endif #define PMD_BIT_FUNC(fn,op) \ diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 01baef0..90aa4583 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -226,7 +226,6 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd) #define pte_dirty(pte) (pte_isset((pte), L_PTE_DIRTY)) #define pte_young(pte) (pte_isset((pte), L_PTE_YOUNG)) #define pte_exec(pte) (pte_isclear((pte), L_PTE_XN)) -#define pte_special(pte) (0) #define pte_valid_user(pte) \ (pte_valid(pte) && pte_isset((pte), L_PTE_USER) && pte_young(pte)) @@ -245,7 +244,8 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, unsigned long ext = 0; if (addr < TASK_SIZE && pte_valid_user(pteval)) { - __sync_icache_dcache(pteval); + if (!pte_special(pteval)) + __sync_icache_dcache(pteval); ext |= PTE_EXT_NG; } @@ -264,8 +264,6 @@ PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG); PTE_BIT_FUNC(mkexec, &= ~L_PTE_XN); PTE_BIT_FUNC(mknexec, |= L_PTE_XN); -static inline pte_t pte_mkspecial(pte_t pte) { return pte; } - static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { const pteval_t mask = L_PTE_XN | L_PTE_RDONLY | L_PTE_USER | diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index f1a0dac..3cadb72 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -35,12 +35,39 @@ #define MMU_GATHER_BUNDLE 8 +#ifdef CONFIG_HAVE_RCU_TABLE_FREE +static inline void __tlb_remove_table(void *_table) +{ + free_page_and_swap_cache((struct page *)_table); +} + +struct mmu_table_batch { + struct rcu_head rcu; + unsigned int nr; + void *tables[0]; +}; + +#define MAX_TABLE_BATCH \ + ((PAGE_SIZE - sizeof(struct mmu_table_batch)) / sizeof(void *)) + +extern void tlb_table_flush(struct mmu_gather *tlb); +extern void tlb_remove_table(struct mmu_gather *tlb, void *table); + +#define tlb_remove_entry(tlb, entry) tlb_remove_table(tlb, entry) +#else +#define tlb_remove_entry(tlb, entry) tlb_remove_page(tlb, entry) +#endif /* CONFIG_HAVE_RCU_TABLE_FREE */ + /* * TLB handling. This allows us to remove pages from the page * tables, and efficiently handle the TLB issues. */ struct mmu_gather { struct mm_struct *mm; +#ifdef CONFIG_HAVE_RCU_TABLE_FREE + struct mmu_table_batch *batch; + unsigned int need_flush; +#endif unsigned int fullmm; struct vm_area_struct *vma; unsigned long start, end; @@ -101,6 +128,9 @@ static inline void __tlb_alloc_page(struct mmu_gather *tlb) static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) { tlb_flush(tlb); +#ifdef CONFIG_HAVE_RCU_TABLE_FREE + tlb_table_flush(tlb); +#endif } static inline void tlb_flush_mmu_free(struct mmu_gather *tlb) @@ -129,6 +159,10 @@ tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start tlb->pages = tlb->local; tlb->nr = 0; __tlb_alloc_page(tlb); + +#ifdef CONFIG_HAVE_RCU_TABLE_FREE + tlb->batch = NULL; +#endif } static inline void @@ -205,7 +239,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, tlb_add_flush(tlb, addr + SZ_1M); #endif - tlb_remove_page(tlb, pte); + tlb_remove_entry(tlb, pte); } static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, @@ -213,7 +247,7 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, { #ifdef CONFIG_ARM_LPAE tlb_add_flush(tlb, addr); - tlb_remove_page(tlb, virt_to_page(pmdp)); + tlb_remove_entry(tlb, virt_to_page(pmdp)); #endif } diff --git a/arch/arm/kernel/hibernate.c b/arch/arm/kernel/hibernate.c index bb8b796..c4cc50e 100644 --- a/arch/arm/kernel/hibernate.c +++ b/arch/arm/kernel/hibernate.c @@ -21,8 +21,7 @@ #include <asm/idmap.h> #include <asm/suspend.h> #include <asm/memory.h> - -extern const void __nosave_begin, __nosave_end; +#include <asm/sections.h> int pfn_is_nosave(unsigned long pfn) { diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 7a996aa..c245d90 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -12,6 +12,7 @@ #include <linux/bootmem.h> #include <linux/module.h> #include <linux/mm.h> +#include <linux/genalloc.h> #include <linux/gfp.h> #include <linux/errno.h> #include <linux/list.h> @@ -298,57 +299,29 @@ static void * __dma_alloc_remap(struct page *page, size_t size, gfp_t gfp, pgprot_t prot, const void *caller) { - struct vm_struct *area; - unsigned long addr; - /* * DMA allocation can be mapped to user space, so lets * set VM_USERMAP flags too. */ - area = get_vm_area_caller(size, VM_ARM_DMA_CONSISTENT | VM_USERMAP, - caller); - if (!area) - return NULL; - addr = (unsigned long)area->addr; - area->phys_addr = __pfn_to_phys(page_to_pfn(page)); - - if (ioremap_page_range(addr, addr + size, area->phys_addr, prot)) { - vunmap((void *)addr); - return NULL; - } - return (void *)addr; + return dma_common_contiguous_remap(page, size, + VM_ARM_DMA_CONSISTENT | VM_USERMAP, + prot, caller); } static void __dma_free_remap(void *cpu_addr, size_t size) { - unsigned int flags = VM_ARM_DMA_CONSISTENT | VM_USERMAP; - struct vm_struct *area = find_vm_area(cpu_addr); - if (!area || (area->flags & flags) != flags) { - WARN(1, "trying to free invalid coherent area: %p\n", cpu_addr); - return; - } - unmap_kernel_range((unsigned long)cpu_addr, size); - vunmap(cpu_addr); + dma_common_free_remap(cpu_addr, size, + VM_ARM_DMA_CONSISTENT | VM_USERMAP); } #define DEFAULT_DMA_COHERENT_POOL_SIZE SZ_256K +static struct gen_pool *atomic_pool; -struct dma_pool { - size_t size; - spinlock_t lock; - unsigned long *bitmap; - unsigned long nr_pages; - void *vaddr; - struct page **pages; -}; - -static struct dma_pool atomic_pool = { - .size = DEFAULT_DMA_COHERENT_POOL_SIZE, -}; +static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE; static int __init early_coherent_pool(char *p) { - atomic_pool.size = memparse(p, &p); + atomic_pool_size = memparse(p, &p); return 0; } early_param("coherent_pool", early_coherent_pool); @@ -358,14 +331,14 @@ void __init init_dma_coherent_pool_size(unsigned long size) /* * Catch any attempt to set the pool size too late. */ - BUG_ON(atomic_pool.vaddr); + BUG_ON(atomic_pool); /* * Set architecture specific coherent pool size only if * it has not been changed by kernel command line parameter. */ - if (atomic_pool.size == DEFAULT_DMA_COHERENT_POOL_SIZE) - atomic_pool.size = size; + if (atomic_pool_size == DEFAULT_DMA_COHERENT_POOL_SIZE) + atomic_pool_size = size; } /* @@ -373,52 +346,44 @@ void __init init_dma_coherent_pool_size(unsigned long size) */ static int __init atomic_pool_init(void) { - struct dma_pool *pool = &atomic_pool; pgprot_t prot = pgprot_dmacoherent(PAGE_KERNEL); gfp_t gfp = GFP_KERNEL | GFP_DMA; - unsigned long nr_pages = pool->size >> PAGE_SHIFT; - unsigned long *bitmap; struct page *page; - struct page **pages; void *ptr; - int bitmap_size = BITS_TO_LONGS(nr_pages) * sizeof(long); - bitmap = kzalloc(bitmap_size, GFP_KERNEL); - if (!bitmap) - goto no_bitmap; - - pages = kzalloc(nr_pages * sizeof(struct page *), GFP_KERNEL); - if (!pages) - goto no_pages; + atomic_pool = gen_pool_create(PAGE_SHIFT, -1); + if (!atomic_pool) + goto out; if (dev_get_cma_area(NULL)) - ptr = __alloc_from_contiguous(NULL, pool->size, prot, &page, - atomic_pool_init); + ptr = __alloc_from_contiguous(NULL, atomic_pool_size, prot, + &page, atomic_pool_init); else - ptr = __alloc_remap_buffer(NULL, pool->size, gfp, prot, &page, - atomic_pool_init); + ptr = __alloc_remap_buffer(NULL, atomic_pool_size, gfp, prot, + &page, atomic_pool_init); if (ptr) { - int i; - - for (i = 0; i < nr_pages; i++) - pages[i] = page + i; - - spin_lock_init(&pool->lock); - pool->vaddr = ptr; - pool->pages = pages; - pool->bitmap = bitmap; - pool->nr_pages = nr_pages; - pr_info("DMA: preallocated %u KiB pool for atomic coherent allocations\n", - (unsigned)pool->size / 1024); + int ret; + + ret = gen_pool_add_virt(atomic_pool, (unsigned long)ptr, + page_to_phys(page), + atomic_pool_size, -1); + if (ret) + goto destroy_genpool; + + gen_pool_set_algo(atomic_pool, + gen_pool_first_fit_order_align, + (void *)PAGE_SHIFT); + pr_info("DMA: preallocated %zd KiB pool for atomic coherent allocations\n", + atomic_pool_size / 1024); return 0; } - kfree(pages); -no_pages: - kfree(bitmap); -no_bitmap: - pr_err("DMA: failed to allocate %u KiB pool for atomic coherent allocation\n", - (unsigned)pool->size / 1024); +destroy_genpool: + gen_pool_destroy(atomic_pool); + atomic_pool = NULL; +out: + pr_err("DMA: failed to allocate %zx KiB pool for atomic coherent allocation\n", + atomic_pool_size / 1024); return -ENOMEM; } /* @@ -522,76 +487,36 @@ static void *__alloc_remap_buffer(struct device *dev, size_t size, gfp_t gfp, static void *__alloc_from_pool(size_t size, struct page **ret_page) { - struct dma_pool *pool = &atomic_pool; - unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT; - unsigned int pageno; - unsigned long flags; + unsigned long val; void *ptr = NULL; - unsigned long align_mask; - if (!pool->vaddr) { + if (!atomic_pool) { WARN(1, "coherent pool not initialised!\n"); return NULL; } - /* - * Align the region allocation - allocations from pool are rather - * small, so align them to their order in pages, minimum is a page - * size. This helps reduce fragmentation of the DMA space. - */ - align_mask = (1 << get_order(size)) - 1; - - spin_lock_irqsave(&pool->lock, flags); - pageno = bitmap_find_next_zero_area(pool->bitmap, pool->nr_pages, - 0, count, align_mask); - if (pageno < pool->nr_pages) { - bitmap_set(pool->bitmap, pageno, count); - ptr = pool->vaddr + PAGE_SIZE * pageno; - *ret_page = pool->pages[pageno]; - } else { - pr_err_once("ERROR: %u KiB atomic DMA coherent pool is too small!\n" - "Please increase it with coherent_pool= kernel parameter!\n", - (unsigned)pool->size / 1024); + val = gen_pool_alloc(atomic_pool, size); + if (val) { + phys_addr_t phys = gen_pool_virt_to_phys(atomic_pool, val); + + *ret_page = phys_to_page(phys); + ptr = (void *)val; } - spin_unlock_irqrestore(&pool->lock, flags); return ptr; } static bool __in_atomic_pool(void *start, size_t size) { - struct dma_pool *pool = &atomic_pool; - void *end = start + size; - void *pool_start = pool->vaddr; - void *pool_end = pool->vaddr + pool->size; - - if (start < pool_start || start >= pool_end) - return false; - - if (end <= pool_end) - return true; - - WARN(1, "Wrong coherent size(%p-%p) from atomic pool(%p-%p)\n", - start, end - 1, pool_start, pool_end - 1); - - return false; + return addr_in_gen_pool(atomic_pool, (unsigned long)start, size); } static int __free_from_pool(void *start, size_t size) { - struct dma_pool *pool = &atomic_pool; - unsigned long pageno, count; - unsigned long flags; - if (!__in_atomic_pool(start, size)) return 0; - pageno = (start - pool->vaddr) >> PAGE_SHIFT; - count = size >> PAGE_SHIFT; - - spin_lock_irqsave(&pool->lock, flags); - bitmap_clear(pool->bitmap, pageno, count); - spin_unlock_irqrestore(&pool->lock, flags); + gen_pool_free(atomic_pool, (unsigned long)start, size); return 1; } @@ -1271,29 +1196,8 @@ static void * __iommu_alloc_remap(struct page **pages, size_t size, gfp_t gfp, pgprot_t prot, const void *caller) { - unsigned int i, nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT; - struct vm_struct *area; - unsigned long p; - - area = get_vm_area_caller(size, VM_ARM_DMA_CONSISTENT | VM_USERMAP, - caller); - if (!area) - return NULL; - - area->pages = pages; - area->nr_pages = nr_pages; - p = (unsigned long)area->addr; - - for (i = 0; i < nr_pages; i++) { - phys_addr_t phys = __pfn_to_phys(page_to_pfn(pages[i])); - if (ioremap_page_range(p, p + PAGE_SIZE, phys, prot)) - goto err; - p += PAGE_SIZE; - } - return area->addr; -err: - unmap_kernel_range((unsigned long)area->addr, size); - vunmap(area->addr); + return dma_common_pages_remap(pages, size, + VM_ARM_DMA_CONSISTENT | VM_USERMAP, prot, caller); return NULL; } @@ -1355,11 +1259,13 @@ static int __iommu_remove_mapping(struct device *dev, dma_addr_t iova, size_t si static struct page **__atomic_get_pages(void *addr) { - struct dma_pool *pool = &atomic_pool; - struct page **pages = pool->pages; - int offs = (addr - pool->vaddr) >> PAGE_SHIFT; + struct page *page; + phys_addr_t phys; + + phys = gen_pool_virt_to_phys(atomic_pool, (unsigned long)addr); + page = phys_to_page(phys); - return pages + offs; + return (struct page **)page; } static struct page **__iommu_get_pages(void *cpu_addr, struct dma_attrs *attrs) @@ -1501,8 +1407,8 @@ void arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr, } if (!dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs)) { - unmap_kernel_range((unsigned long)cpu_addr, size); - vunmap(cpu_addr); + dma_common_free_remap(cpu_addr, size, + VM_ARM_DMA_CONSISTENT | VM_USERMAP); } __iommu_remove_mapping(dev, handle, size); diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 43d54f5..265b836 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -400,3 +400,18 @@ void __flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned l */ __cpuc_flush_dcache_area(page_address(page), PAGE_SIZE); } + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#ifdef CONFIG_HAVE_RCU_TABLE_FREE +void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp) +{ + pmd_t pmd = pmd_mksplitting(*pmdp); + VM_BUG_ON(address & ~PMD_MASK); + set_pmd_at(vma->vm_mm, address, pmdp, pmd); + + /* dummy IPI to serialise against fast_gup */ + kick_all_cpus_sync(); +} +#endif /* CONFIG_HAVE_RCU_TABLE_FREE */ +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 9221645..92bba32 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -322,7 +322,7 @@ void __init arm_memblock_init(const struct machine_desc *mdesc) * reserve memory for DMA contigouos allocations, * must come from DMA area inside low memory */ - dma_contiguous_reserve(min(arm_dma_limit, arm_lowmem_limit)); + dma_contiguous_reserve(arm_dma_limit); arm_memblock_steal_permitted = false; memblock_dump_all(); |