浪潮服务器，双核Intel(R) Xeon(R) Gold 5318Y CPU @ 2.10GHz。安装了虚拟化PVE，debain系统
内存是16根Synchronous 的8G内存。BMC能识别出128G，开机进入系统也能识别出128G，进入debain之后，查看内存条也是能查出128G
root@pve:~# cat /proc/meminfo
MemTotal: 65580648 kB
MemFree: 34197828 kB
root@pve:~# lshw -c memory
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 1
version: 06.00.01
date: 10/09/2021
size: 64KiB
capacity: 32MiB
capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int14serial int17printer int10video usb biosbootspecification uefi
*-memory
description: System Memory
physical id: 57
slot: System board or motherboard
size: 128GiB
capacity: 12TiB
capabilities: ecc
configuration: errordetection=ecc
*-bank:0
description: DIMM DDR4 Synchronous Registered (Buffered) 3200 MHz (0.3 ns)
product:
vendor: Hynix
physical id: 0
serial:
slot: CPU0_C0D0
size: 8GiB
width: 64 bits
clock: 3200MHz (0.3ns)
开机启动
Blos也是能看到128g内存
问题就是，系统只是用到了64G内存，
root@pve:~# free -h
total used free shared buff/cache available
Mem: 62Gi 29Gi 32Gi 48Mi 490Mi 32Gi
Swap: 8.0Gi 0B 8.0Gi
这里是dmesg信息，也只是加载了64G
root@pve:~# dmesg | grep -i memory
[ 0.017314] ACPI: Reserving FACP table memory at [mem 0x69558000-0x69558113]
[ 0.017316] ACPI: Reserving DSDT table memory at [mem 0x6951d000-0x69556d17]
[ 0.017318] ACPI: Reserving FACS table memory at [mem 0x699f9000-0x699f903f]
[ 0.017319] ACPI: Reserving SPMI table memory at [mem 0x69557000-0x69557040]
[ 0.017320] ACPI: Reserving FIDT table memory at [mem 0x6951c000-0x6951c09b]
[ 0.017321] ACPI: Reserving SSDT table memory at [mem 0x6955a000-0x6955a747]
[ 0.017322] ACPI: Reserving EINJ table memory at [mem 0x69559000-0x6955914f]
[ 0.017323] ACPI: Reserving ERST table memory at [mem 0x6951b000-0x6951b22f]
[ 0.017324] ACPI: Reserving BERT table memory at [mem 0x6951a000-0x6951a02f]
[ 0.017325] ACPI: Reserving SSDT table memory at [mem 0x69519000-0x69519744]
[ 0.017326] ACPI: Reserving MCFG table memory at [mem 0x69518000-0x6951803b]
[ 0.017327] ACPI: Reserving BDAT table memory at [mem 0x69517000-0x6951702f]
[ 0.017328] ACPI: Reserving HMAT table memory at [mem 0x69516000-0x6951617f]
[ 0.017329] ACPI: Reserving HPET table memory at [mem 0x69515000-0x69515037]
[ 0.017330] ACPI: Reserving MIGT table memory at [mem 0x69514000-0x6951403f]
[ 0.017331] ACPI: Reserving MSCT table memory at [mem 0x69513000-0x69513063]
[ 0.017332] ACPI: Reserving MUDT table memory at [mem 0x69512000-0x6951202f]
[ 0.017333] ACPI: Reserving WDDT table memory at [mem 0x69511000-0x6951103f]
[ 0.017334] ACPI: Reserving APIC table memory at [mem 0x6950f000-0x6950f35d]
[ 0.017336] ACPI: Reserving SLIT table memory at [mem 0x6950e000-0x6950e42b]
[ 0.017337] ACPI: Reserving SRAT table memory at [mem 0x6950a000-0x6950d22f]
[ 0.017338] ACPI: Reserving OEM4 table memory at [mem 0x69446000-0x69509d60]
[ 0.017339] ACPI: Reserving OEM1 table memory at [mem 0x693b7000-0x69445788]
[ 0.017340] ACPI: Reserving SSDT table memory at [mem 0x6937b000-0x693b62a4]
[ 0.017341] ACPI: Reserving BDAT table memory at [mem 0x6937a000-0x6937a02f]
[ 0.017342] ACPI: Reserving HEST table memory at [mem 0x69379000-0x6937913b]
[ 0.017343] ACPI: Reserving DMAR table memory at [mem 0x69378000-0x6937826f]
[ 0.017344] ACPI: Reserving SPCR table memory at [mem 0x69377000-0x6937704f]
[ 0.017346] ACPI: Reserving SSDT table memory at [mem 0x69372000-0x6937615f]
[ 0.017347] ACPI: Reserving WSMT table memory at [mem 0x69510000-0x69510027]
[ 0.017348] ACPI: Reserving FPDT table memory at [mem 0x69371000-0x69371043]
[ 0.017947] Early memory node ranges
[ 0.142397] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.142400] PM: hibernation: Registered nosave memory: [mem 0x0003e000-0x0003efff]
[ 0.142402] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000fffff]
[ 0.142405] PM: hibernation: Registered nosave memory: [mem 0x61046000-0x61046fff]
[ 0.142407] PM: hibernation: Registered nosave memory: [mem 0x6715b000-0x6905afff]
[ 0.142408] PM: hibernation: Registered nosave memory: [mem 0x6905b000-0x6955afff]
[ 0.142409] PM: hibernation: Registered nosave memory: [mem 0x6955b000-0x699fafff]
[ 0.142410] PM: hibernation: Registered nosave memory: [mem 0x699fb000-0x6bfaefff]
[ 0.142411] PM: hibernation: Registered nosave memory: [mem 0x6bfaf000-0x6c1fefff]
[ 0.142413] PM: hibernation: Registered nosave memory: [mem 0x6f800000-0x8fffffff]
[ 0.142414] PM: hibernation: Registered nosave memory: [mem 0x90000000-0xfcffffff]
[ 0.142415] PM: hibernation: Registered nosave memory: [mem 0xfd000000-0xfe7fffff]
[ 0.142416] PM: hibernation: Registered nosave memory: [mem 0xfe800000-0xfed1ffff]
[ 0.142417] PM: hibernation: Registered nosave memory: [mem 0xfed20000-0xfed44fff]
[ 0.142418] PM: hibernation: Registered nosave memory: [mem 0xfed45000-0xfeffffff]
[ 0.142419] PM: hibernation: Registered nosave memory: [mem 0xff000000-0xffffffff]
[ 0.142421] PM: hibernation: Registered nosave memory: [mem 0x800000000-0xfffffffff]
[ 0.142423] PM: hibernation: Registered nosave memory: [mem 0x1800000000-0x1fffffffff]
[ 0.319591] Memory: 65359996K/66755560K available (16393K kernel code, 4345K rwdata, 10180K rodata, 2884K init, 4904K bss, 1395360K reserved, 0K cma-reserved)
[ 0.402884] Freeing SMP alternatives memory: 40K
[ 0.880359] x86/mm: Memory block size: 2048MB
[ 2.140011] acpi/hmat: HMAT: Memory (0x0 length 0x80000000) Flags:0003 Processor Domain:0 Memory Domain:0
[ 2.140014] acpi/hmat: HMAT: Memory (0x100000000 length 0xf80000000) Flags:0003 Processor Domain:0 Memory Domain:0
[ 2.140016] acpi/hmat: HMAT: Memory (0x1080000000 length 0x1000000000) Flags:0003 Processor Domain:1 Memory Domain:1
[ 2.694708] Freeing initrd memory: 61680K
[ 2.741322] Freeing unused decrypted memory: 2036K
[ 2.741942] Freeing unused kernel image (initmem) memory: 2884K
[ 3.064403] Freeing unused kernel image (text/rodata gap) memory: 2036K
[ 3.064466] Freeing unused kernel image (rodata/data gap) memory: 60K
[ 3.246606] i2c i2c-0: 16/32 memory slots populated (from DMI)
[ 3.246608] i2c i2c-0: Systems with more than 4 memory slots not supported yet, not instantiating SPD
[ 42.208822] EDAC i10nm: No hbm memory
有大佬遇到过类似的情况吗？