virtual memory map 其实地址 vmemmap_base 注意这里 page_offset_base/vmemmp_base/vmalloc_base都会被KASLAR(kernel address space layout randomization)影响,如果CONFIG_RANDOMIZE_BASE=y,那么起始地址都会randomrize,注意这几个区间上下都有hole,所以不会重叠。 #define __PAGE_OFFSET_BASE_L4 _AC(0xffff88800000...
因为是kernel,所以kmalloc直接给真实physical memory。kernel memory从不被discard或page out。 Beagle Bone Black的memory mapping 在boot time时为以下展示 Memory: 511MB = 511MB total Memory: 505980k/505980k available, 18308k reserved, 0K highmem Virtual kernel memory layout: vector : 0xffff0000 - 0xf...
ARM64内核虚拟地址空间布局可以通过arch/arm64/include/asm/memory.h文件查看,也可以查看也可以看看 arch/arm64/mm/init.c 和 arch/arm64/include/asm/pgtable.h。 pr_notice("Virtual kernel memory layout:\n""vmalloc : 0x%16lx - 0x%16lx (%6ld MB)\n"#ifdef CONFIG_SPARSEMEM_VMEMMAP"vmemmap :...
pr_notice("Virtual kernel memory layout:\n" " vector : 0x%08lx - 0x%08lx (%4ld kB)\n" #ifdef CONFIG_HAVE_TCM " DTCM : 0x%08lx - 0x%08lx (%4ld kB)\n" " ITCM : 0x%08lx - 0x%08lx (%4ld kB)\n" #endif " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n" " vmalloc...
Virtual kernel memory layout: vector :0xffff0000-0xffff1000(4kB) fixmap :0xffc00000-0xfff00000(3072kB) vmalloc :0xf0000000-0xff000000(240MB) lowmem :0xc0000000-0xef800000(760MB) pkmap :0xbfe00000-0xc0000000(2MB) modules :0xbf000000-0xbfe00000(14MB) ...
ARM64 linux kernel virtual address layout 以下内存布局信息在引导时由Linux内核在我的SoC平台上打印(带有4核Cortex-A53处理器和2.75GiB DRAM) [0.000000] Memory: 2736316K/2883584K available (4796K kernel code, 488K rwdata, 1360K rodata, 448K init, 341K bss, 130884K reserved, 16384K cma-...
Virtual kernel memory layout:vector : 0xffff0000 - 0xffff1000 ( 4 kB)fixmap : 0xffc00000 - 0xfff00000 (3072 kB)vmalloc : 0xf0000000 - 0xff000000 ( 240 MB)lowmem : 0xc0000000 - 0xef800000 ( 760 MB)pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)modules : 0xbf000000 - 0xbfe00000 ...
运行 AI代码解释 struct mm_struct{struct{struct vm_area_struct*mmap;/* list of VMAs */struct rb_root mm_rb;u64 vmacache_seqnum;/* per-thread vmacache */// ...unsigned long hiwater_rss;/* High-watermark of RSS usage */unsigned long hiwater_vm;/* High-water virtual memory usage *...
Virtual kernel memory layout: 代码语言:txt AI代码解释 vector : 0xffff0000 - 0xffff1000 ( 4 kB) 代码语言:txt AI代码解释 fixmap : 0xffc00000 - 0xfff00000 (3072 kB) 代码语言:txt AI代码解释 vmalloc : 0xd0800000 - 0xff000000 ( 744 MB) 代码语言:txt AI代码解释 lowmem : 0xc0000000 -...
On machines with * highmem some memory is mapped into kernel virtual memory * dynamically, so we need a place to store that address. * Note that this field could be 16 bits on x86 ... ;) * * Architectures with slow multiplication can define * WANT_PAGE_VIRTUAL in asm/page.h */ #...