我们有旧的 RHEL 7.2 服务器，我们注意到非常奇怪的内核消息
不确定下面的行是否定义了问题
[ffffea00a5a00000-ffffea00a5bfffff] PMD -> [ffff880015000000-ffff8800151fffff] on node 0
但我也分享了完整的信息，并希望获得有关它们的更多详细信息
[Thu Oct 27 10:20:59 2022] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[Thu Oct 27 10:20:59 2022] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[Thu Oct 27 10:20:59 2022] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[Thu Oct 27 10:20:59 2022] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[Thu Oct 27 10:20:59 2022] 11230501 total pagecache pages
[Thu Oct 27 10:20:59 2022] 55992 pages in swap cache
[Thu Oct 27 10:20:59 2022] Swap cache stats: add 1175357, delete 1119365, find 4949217/4971174
[Thu Oct 27 10:20:59 2022] Free swap = 13818588kB
[Thu Oct 27 10:20:59 2022] Total swap = 16351228kB
[Thu Oct 27 10:20:59 2022] 33652606 pages RAM
[Thu Oct 27 10:20:59 2022] 0 pages HighMem/MovableOnly
[Thu Oct 27 10:20:59 2022] 587996 pages reserved
[Thu Oct 27 10:21:00 2022] init_memory_mapping: [mem 0x2a40000000-0x2c3fffffff]
[Thu Oct 27 10:21:00 2022] [mem 0x2a40000000-0x2c3fffffff] page 1G
[Thu Oct 27 10:21:00 2022] [ffffea00a5a00000-ffffea00a5bfffff] PMD -> [ffff880015000000-ffff8800151fffff] on node 0
[Thu Oct 27 10:21:00 2022] [ffffea00a9000000-ffffea00a93fffff] PMD -> [ffff881002c00000-ffff881002ffffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00a9400000-ffffea00a99fffff] PMD -> [ffff881003800000-ffff881003dfffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00a9a00000-ffffea00a9bfffff] PMD -> [ffff881000200000-ffff8810003fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00a9c00000-ffffea00a9dfffff] PMD -> [ffff881004200000-ffff8810043fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00a9e00000-ffffea00a9ffffff] PMD -> [ffff881003e00000-ffff881003ffffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aa000000-ffffea00aa9fffff] PMD -> [ffff881004600000-ffff881004ffffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aaa00000-ffffea00aabfffff] PMD -> [ffff881005200000-ffff8810053fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aac00000-ffffea00aadfffff] PMD -> [ffff881005000000-ffff8810051fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aae00000-ffffea00ab9fffff] PMD -> [ffff881005400000-ffff881005ffffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aba00000-ffffea00acbfffff] PMD -> [ffff881006200000-ffff8810073fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00acc00000-ffffea00acffffff] PMD -> [ffff881007600000-ffff8810079fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00ad000000-ffffea00ad1fffff] PMD -> [ffff881007400000-ffff8810075fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00ad200000-ffffea00adffffff] PMD -> [ffff881007a00000-ffff8810087fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00ae000000-ffffea00ae1fffff] PMD -> [ffff881008a00000-ffff881008bfffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00ae200000-ffffea00ae3fffff] PMD -> [ffff881008800000-ffff8810089fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00ae400000-ffffea00ae5fffff] PMD -> [ffff881008c00000-ffff881008dfffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00ae600000-ffffea00ae7fffff] PMD -> [ffff881009200000-ffff8810093fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00ae800000-ffffea00ae9fffff] PMD -> [ffff881009000000-ffff8810091fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aea00000-ffffea00aebfffff] PMD -> [ffff881009400000-ffff8810095fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aec00000-ffffea00aedfffff] PMD -> [ffff881009800000-ffff8810099fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00aee00000-ffffea00aeffffff] PMD -> [ffff881009600000-ffff8810097fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00af000000-ffffea00af1fffff] PMD -> [ffff881009c00000-ffff881009dfffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00af200000-ffffea00af3fffff] PMD -> [ffff881009a00000-ffff881009bfffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00af400000-ffffea00af5fffff] PMD -> [ffff88100a200000-ffff88100a3fffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00af600000-ffffea00af7fffff] PMD -> [ffff881009e00000-ffff881009ffffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00af800000-ffffea00b03fffff] PMD -> [ffff88100a400000-ffff88100adfffff] on node 1
[Thu Oct 27 10:21:00 2022] [ffffea00b0400000-ffffea00b09fffff] PMD -> [ffff88100b000000-ffff88100b5fffff] on node 1
[Thu Oct 27 10:21:01 2022] [ffffea00b0a00000-ffffea00b0bfffff] PMD -> [ffff881004400000-ffff8810045fffff] on node 1
[Thu Oct 27 10:21:01 2022] [ffffea00b0c00000-ffffea00b0dfffff] PMD -> [ffff88100b800000-ffff88100b9fffff] on node 1
[Thu Oct 27 10:21:01 2022] init_memory_mapping: [mem 0x2c40000000-0x2e3fffffff]
[Thu Oct 27 10:21:01 2022] [mem 0x2c40000000-0x2e3fffffff] page 1G
[Thu Oct 27 10:21:01 2022] [ffffea00b0e00000-ffffea00b0ffffff] PMD -> [ffff88100b600000-ffff88100b7fffff] on node 1
[Thu Oct 27 10:21:01 2022] [ffffea00b1000000-ffffea00b1dfffff] PMD -> [ffff88100ba00000-ffff88100c7fffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b1e00000-ffffea00b33fffff] PMD -> [ffff88100cc00000-ffff88100e1fffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b3400000-ffffea00b4ffffff] PMD -> [ffff88100e400000-ffff88100fffffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b5000000-ffffea00b51fffff] PMD -> [ffff88100c800000-ffff88100c9fffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b5200000-ffffea00b59fffff] PMD -> [ffff881010000000-ffff8810107fffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b5a00000-ffffea00b5bfffff] PMD -> [ffff881010c00000-ffff881010dfffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b5c00000-ffffea00b5dfffff] PMD -> [ffff881010a00000-ffff881010bfffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b5e00000-ffffea00b61fffff] PMD -> [ffff881011000000-ffff8810113fffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b6200000-ffffea00b69fffff] PMD -> [ffff881011800000-ffff881011ffffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b6a00000-ffffea00b7ffffff] PMD -> [ffff881012200000-ffff8810137fffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b8000000-ffffea00b81fffff] PMD -> [ffff881013a00000-ffff881013bfffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b8200000-ffffea00b83fffff] PMD -> [ffff881013e00000-ffff881013ffffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b8400000-ffffea00b85fffff] PMD -> [ffff881013c00000-ffff881013dfffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b8600000-ffffea00b87fffff] PMD -> [ffff881014400000-ffff8810145fffff] on node 0
[Thu Oct 27 10:21:01 2022] [ffffea00b8800000-ffffea00b89fffff] PMD -> [ffff881014000000-ffff8810141fffff] on node 0
答案1
这些消息是页表设置期间打印的调试信息;它们显示有关“页面中间目录”的信息，“页面中间目录”是 x86 MMU 用于将虚拟地址映射到物理地址的数据结构之一。
这些消息并不表明存在问题。