On 8/23/18 2:25 PM, Masayoshi Mizuma wrote:

From: Masayoshi Mizuma <redacted>

commit 124049decbb1 ("x86/e820: put !E820_TYPE_RAM regions into
memblock.reserved") breaks movable_node kernel option because it
changed the memory gap range to reserved memblock. So, the node
is marked as Normal zone even if the SRAT has Hot plaggable affinity.

    =====================================================================
    kernel: BIOS-e820: [mem 0x0000180000000000-0x0000180fffffffff] usable
    kernel: BIOS-e820: [mem 0x00001c0000000000-0x00001c0fffffffff] usable
    ...
    kernel: reserved[0x12]#011[0x0000181000000000-0x00001bffffffffff], 0x000003f000000000 bytes flags: 0x0
    ...
    kernel: ACPI: SRAT: Node 2 PXM 6 [mem 0x180000000000-0x1bffffffffff] hotplug
    kernel: ACPI: SRAT: Node 3 PXM 7 [mem 0x1c0000000000-0x1fffffffffff] hotplug
    ...
    kernel: Movable zone start for each node
    kernel:  Node 3: 0x00001c0000000000
    kernel: Early memory node ranges
    ...
    =====================================================================

Naoya's v1 patch [*] fixes the original issue and this movable_node
issue doesn't occur.
Let's revert commit 124049decbb1 ("x86/e820: put !E820_TYPE_RAM
regions into memblock.reserved") and apply the v1 patch.

[*] https://lkml.org/lkml/2018/6/13/27

Signed-off-by: Masayoshi Mizuma <redacted>

Reviewed-by: Pavel Tatashin <redacted>