ppc64 kexec -p failed

Hi,

When use crashkernel=128M@256M at a ppc64 machine, kexec -p vmlinuz failed with:
Could not find a free area of memory of faa448 bytes... Could not find a free area of memory of 142721d bytes...

Is this a know issue or Is there limitation of the crashkernel base addr?

Detail info as below (define DEBUG when building):

0000000008000000-000000000c000000 : 0 000000000c000000-0000000010000000 : 0 0000000010000000-0000000014000000 : 0 0000000014000000-0000000018000000 : 0 0000000018000000-000000001c000000 : 0 000000001c000000-0000000020000000 : 0 0000000020000000-0000000024000000 : 0 0000000024000000-0000000028000000 : 0 0000000028000000-000000002c000000 : 0 000000002c000000-0000000030000000 : 0 0000000030000000-0000000034000000 : 0 0000000034000000-0000000038000000 : 0 0000000038000000-000000003c000000 : 0 000000003c000000-0000000040000000 : 0 0000000040000000-0000000044000000 : 0 0000000044000000-0000000048000000 : 0 0000000048000000-000000004c000000 : 0 000000004c000000-0000000050000000 : 0 0000000050000000-0000000054000000 : 0 0000000054000000-0000000058000000 : 0 0000000058000000-000000005c000000 : 0 000000005c000000-0000000060000000 : 0 0000000060000000-0000000064000000 : 0 0000000064000000-0000000068000000 : 0 0000000068000000-000000006c000000 : 0 000000006c000000-0000000070000000 : 0 0000000070000000-0000000074000000 : 0 0000000074000000-0000000078000000 : 0 0000000078000000-000000007c000000 : 0 000000007c000000-0000000080000000 : 0 0000000080000000-0000000084000000 : 0 0000000084000000-0000000088000000 : 0 0000000088000000-000000008c000000 : 0 000000008c000000-0000000090000000 : 0 0000000090000000-0000000094000000 : 0 0000000094000000-0000000098000000 : 0 0000000098000000-000000009c000000 : 0 000000009c000000-00000000a0000000 : 0 00000000a0000000-00000000a4000000 : 0 00000000a4000000-00000000a8000000 : 0 00000000a8000000-00000000ac000000 : 0 00000000ac000000-00000000b0000000 : 0 00000000b0000000-00000000b4000000 : 0 00000000b4000000-00000000b8000000 : 0 00000000b8000000-00000000bc000000 : 0 00000000bc000000-00000000c0000000 : 0 00000000c0000000-00000000c4000000 : 0 00000000c4000000-00000000c8000000 : 0 00000000c8000000-00000000cc000000 : 0 00000000cc000000-00000000d0000000 : 0 00000000d0000000-00000000d4000000 : 0 00000000d4000000-00000000d8000000 : 0 00000000d8000000-00000000dc000000 : 0 00000000dc000000-00000000e0000000 : 0 00000000e0000000-00000000e4000000 : 0 00000000e4000000-00000000e8000000 : 0 00000000e8000000-00000000ec000000 : 0 00000000ec000000-00000000f0000000 : 0 00000000f0000000-00000000f4000000 : 0 00000000f4000000-00000000f8000000 : 0 00000000f8000000-00000000fc000000 : 0 00000000fc000000-0000000100000000 : 0 0000000100000000-0000000104000000 : 0 0000000104000000-0000000108000000 : 0 0000000108000000-000000010c000000 : 0 000000010c000000-0000000110000000 : 0 0000000110000000-0000000114000000 : 0 0000000114000000-0000000118000000 : 0 0000000118000000-000000011c000000 : 0 000000011c000000-0000000120000000 : 0 0000000120000000-0000000124000000 : 0 0000000124000000-0000000128000000 : 0 0000000128000000-000000012c000000 : 0 000000012c000000-0000000130000000 : 0 0000000130000000-0000000134000000 : 0 0000000134000000-0000000138000000 : 0 0000000138000000-000000013c000000 : 0 000000013c000000-0000000140000000 : 0 0000000140000000-0000000144000000 : 0 0000000144000000-0000000148000000 : 0 0000000148000000-000000014c000000 : 0 000000014c000000-0000000150000000 : 0 0000000150000000-0000000154000000 : 0 0000000154000000-0000000158000000 : 0 0000000158000000-000000015c000000 : 0 000000015c000000-0000000160000000 : 0 0000000160000000-0000000164000000 : 0 0000000164000000-0000000168000000 : 0 0000000168000000-000000016c000000 : 0 000000016c000000-0000000170000000 : 0 0000000170000000-0000000174000000 : 0 0000000174000000-0000000178000000 : 0 0000000178000000-000000017c000000 : 0 000000017c000000-0000000180000000 : 0 0000000000000000-0000000008000000 : 0
get base memory ranges:95
usable memory rgns size:1 base:74d0000 size:b30000
exclude_range sorted exclude_range[0] start:0, end:1430000 exclude_range sorted exclude_range[1] start:74d0000, end:8000000 setup_memory_ranges memory_range[0] start:1430001, end:74cffff get memory ranges:1
Warning: append= option is not passed. Using the first kernel root partition 0000000008000000-000000000c000000 : 0 000000000c000000-0000000010000000 : 0 0000000010000000-0000000014000000 : 0 0000000014000000-0000000018000000 : 0 0000000018000000-000000001c000000 : 0 000000001c000000-0000000020000000 : 0 0000000020000000-0000000024000000 : 0 0000000024000000-0000000028000000 : 0 0000000028000000-000000002c000000 : 0 000000002c000000-0000000030000000 : 0 0000000030000000-0000000034000000 : 0 0000000034000000-0000000038000000 : 0 0000000038000000-000000003c000000 : 0 000000003c000000-0000000040000000 : 0 0000000040000000-0000000044000000 : 0 0000000044000000-0000000048000000 : 0 0000000048000000-000000004c000000 : 0 000000004c000000-0000000050000000 : 0 0000000050000000-0000000054000000 : 0 0000000054000000-0000000058000000 : 0 0000000058000000-000000005c000000 : 0 000000005c000000-0000000060000000 : 0 0000000060000000-0000000064000000 : 0 0000000064000000-0000000068000000 : 0 0000000068000000-000000006c000000 : 0 000000006c000000-0000000070000000 : 0 0000000070000000-0000000074000000 : 0 0000000074000000-0000000078000000 : 0 0000000078000000-000000007c000000 : 0 000000007c000000-0000000080000000 : 0 0000000080000000-0000000084000000 : 0 0000000084000000-0000000088000000 : 0 0000000088000000-000000008c000000 : 0 000000008c000000-0000000090000000 : 0 0000000090000000-0000000094000000 : 0 0000000094000000-0000000098000000 : 0 0000000098000000-000000009c000000 : 0 000000009c000000-00000000a0000000 : 0 00000000a0000000-00000000a4000000 : 0 00000000a4000000-00000000a8000000 : 0 00000000a8000000-00000000ac000000 : 0 00000000ac000000-00000000b0000000 : 0 00000000b0000000-00000000b4000000 : 0 00000000b4000000-00000000b8000000 : 0 00000000b8000000-00000000bc000000 : 0 00000000bc000000-00000000c0000000 : 0 00000000c0000000-00000000c4000000 : 0 00000000c4000000-00000000c8000000 : 0 00000000c8000000-00000000cc000000 : 0 00000000cc000000-00000000d0000000 : 0 00000000d0000000-00000000d4000000 : 0 00000000d4000000-00000000d8000000 : 0 00000000d8000000-00000000dc000000 : 0 00000000dc000000-00000000e0000000 : 0 00000000e0000000-00000000e4000000 : 0 00000000e4000000-00000000e8000000 : 0 00000000e8000000-00000000ec000000 : 0 00000000ec000000-00000000f0000000 : 0 00000000f0000000-00000000f4000000 : 0 00000000f4000000-00000000f8000000 : 0 00000000f8000000-00000000fc000000 : 0 00000000fc000000-0000000100000000 : 0 0000000100000000-0000000104000000 : 0 0000000104000000-0000000108000000 : 0 0000000108000000-000000010c000000 : 0 000000010c000000-0000000110000000 : 0 0000000110000000-0000000114000000 : 0 0000000114000000-0000000118000000 : 0 0000000118000000-000000011c000000 : 0 000000011c000000-0000000120000000 : 0 0000000120000000-0000000124000000 : 0 0000000124000000-0000000128000000 : 0 0000000128000000-000000012c000000 : 0 000000012c000000-0000000130000000 : 0 0000000130000000-0000000134000000 : 0 0000000134000000-0000000138000000 : 0 0000000138000000-000000013c000000 : 0 000000013c000000-0000000140000000 : 0 0000000140000000-0000000144000000 : 0 0000000144000000-0000000148000000 : 0 0000000148000000-000000014c000000 : 0 000000014c000000-0000000150000000 : 0 0000000150000000-0000000154000000 : 0 0000000154000000-0000000158000000 : 0 0000000158000000-000000015c000000 : 0 000000015c000000-0000000160000000 : 0 0000000160000000-0000000164000000 : 0 0000000164000000-0000000168000000 : 0 0000000168000000-000000016c000000 : 0 000000016c000000-0000000170000000 : 0 0000000170000000-0000000174000000 : 0 0000000174000000-0000000178000000 : 0 0000000178000000-000000017c000000 : 0 000000017c000000-0000000180000000 : 0 0000000000000000-0000000008000000 : 0
get base memory ranges:96
exclude_range sorted exclude_range[0] start:0, end:1430000 exclude_range sorted exclude_range[1] start:74d0000, end:8000000 setup_memory_ranges memory_range[0] start:1430001, end:74cffff Could not find a free area of memory of faa448 bytes...
Could not find a free area of memory of 142721d bytes...

Hi,

When use crashkernel=128M@256M at a ppc64 machine, kexec -p vmlinuz failed with:
Could not find a free area of memory of faa448 bytes... Could not find a free area of memory of 142721d bytes...

Is this a know issue or Is there limitation of the crashkernel base addr?

Detail info as below (define DEBUG when building):

0000000000000000-0000000008000000 : 0

Quoted 1 line · Dave Young

Hi,

Quoted 6 lines

When use crashkernel=128M@256M at a ppc64 machine, kexec -p vmlinuz failed with:
Could not find a free area of memory of faa448 bytes... Could not find a free area of memory of 142721d bytes...

Quoted 1 line

Is this a know issue or Is there limitation of the crashkernel base addr?

On Power, crashkernel base addr must fall inside RMO region. The is because ppc64 kernel needs some of its memory in the RMO region. The memory ranges below shows that the system has RMO region of size 128M, Hence crashkernel base addr @64M should work just fine.

Quoted 4 lines

Detail info as below (define DEBUG when building):

...
...

Quoted 1 line

0000000000000000-0000000008000000 : 0

...
...

Thanks,
-Mahesh.

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Quoted 7 lines · Dave Young

Hi,

When use crashkernel=128M@256M at a ppc64 machine, kexec -p vmlinuz failed with:
Could not find a free area of memory of faa448 bytes... Could not find a free area of memory of 142721d bytes...

Quoted 1 line

Is this a know issue or Is there limitation of the crashkernel base addr?

Vivek, do you know something about this?

Quoted 201 lines

Detail info as below (define DEBUG when building):

0000000008000000-000000000c000000 : 0 000000000c000000-0000000010000000 : 0 0000000010000000-0000000014000000 : 0 0000000014000000-0000000018000000 : 0 0000000018000000-000000001c000000 : 0 000000001c000000-0000000020000000 : 0 0000000020000000-0000000024000000 : 0 0000000024000000-0000000028000000 : 0 0000000028000000-000000002c000000 : 0 000000002c000000-0000000030000000 : 0 0000000030000000-0000000034000000 : 0 0000000034000000-0000000038000000 : 0 0000000038000000-000000003c000000 : 0 000000003c000000-0000000040000000 : 0 0000000040000000-0000000044000000 : 0 0000000044000000-0000000048000000 : 0 0000000048000000-000000004c000000 : 0 000000004c000000-0000000050000000 : 0 0000000050000000-0000000054000000 : 0 0000000054000000-0000000058000000 : 0 0000000058000000-000000005c000000 : 0 000000005c000000-0000000060000000 : 0 0000000060000000-0000000064000000 : 0 0000000064000000-0000000068000000 : 0 0000000068000000-000000006c000000 : 0 000000006c000000-0000000070000000 : 0 0000000070000000-0000000074000000 : 0 0000000074000000-0000000078000000 : 0 0000000078000000-000000007c000000 : 0 000000007c000000-0000000080000000 : 0 0000000080000000-0000000084000000 : 0 0000000084000000-0000000088000000 : 0 0000000088000000-000000008c000000 : 0 000000008c000000-0000000090000000 : 0 0000000090000000-0000000094000000 : 0 0000000094000000-0000000098000000 : 0 0000000098000000-000000009c000000 : 0 000000009c000000-00000000a0000000 : 0 00000000a0000000-00000000a4000000 : 0 00000000a4000000-00000000a8000000 : 0 00000000a8000000-00000000ac000000 : 0 00000000ac000000-00000000b0000000 : 0 00000000b0000000-00000000b4000000 : 0 00000000b4000000-00000000b8000000 : 0 00000000b8000000-00000000bc000000 : 0 00000000bc000000-00000000c0000000 : 0 00000000c0000000-00000000c4000000 : 0 00000000c4000000-00000000c8000000 : 0 00000000c8000000-00000000cc000000 : 0 00000000cc000000-00000000d0000000 : 0 00000000d0000000-00000000d4000000 : 0 00000000d4000000-00000000d8000000 : 0 00000000d8000000-00000000dc000000 : 0 00000000dc000000-00000000e0000000 : 0 00000000e0000000-00000000e4000000 : 0 00000000e4000000-00000000e8000000 : 0 00000000e8000000-00000000ec000000 : 0 00000000ec000000-00000000f0000000 : 0 00000000f0000000-00000000f4000000 : 0 00000000f4000000-00000000f8000000 : 0 00000000f8000000-00000000fc000000 : 0 00000000fc000000-0000000100000000 : 0 0000000100000000-0000000104000000 : 0 0000000104000000-0000000108000000 : 0 0000000108000000-000000010c000000 : 0 000000010c000000-0000000110000000 : 0 0000000110000000-0000000114000000 : 0 0000000114000000-0000000118000000 : 0 0000000118000000-000000011c000000 : 0 000000011c000000-0000000120000000 : 0 0000000120000000-0000000124000000 : 0 0000000124000000-0000000128000000 : 0 0000000128000000-000000012c000000 : 0 000000012c000000-0000000130000000 : 0 0000000130000000-0000000134000000 : 0 0000000134000000-0000000138000000 : 0 0000000138000000-000000013c000000 : 0 000000013c000000-0000000140000000 : 0 0000000140000000-0000000144000000 : 0 0000000144000000-0000000148000000 : 0 0000000148000000-000000014c000000 : 0 000000014c000000-0000000150000000 : 0 0000000150000000-0000000154000000 : 0 0000000154000000-0000000158000000 : 0 0000000158000000-000000015c000000 : 0 000000015c000000-0000000160000000 : 0 0000000160000000-0000000164000000 : 0 0000000164000000-0000000168000000 : 0 0000000168000000-000000016c000000 : 0 000000016c000000-0000000170000000 : 0 0000000170000000-0000000174000000 : 0 0000000174000000-0000000178000000 : 0 0000000178000000-000000017c000000 : 0 000000017c000000-0000000180000000 : 0 0000000000000000-0000000008000000 : 0
get base memory ranges:95
usable memory rgns size:1 base:74d0000 size:b30000
exclude_range sorted exclude_range[0] start:0, end:1430000 exclude_range sorted exclude_range[1] start:74d0000, end:8000000 setup_memory_ranges memory_range[0] start:1430001, end:74cffff get memory ranges:1
Warning: append= option is not passed. Using the first kernel root partition 0000000008000000-000000000c000000 : 0 000000000c000000-0000000010000000 : 0 0000000010000000-0000000014000000 : 0 0000000014000000-0000000018000000 : 0 0000000018000000-000000001c000000 : 0 000000001c000000-0000000020000000 : 0 0000000020000000-0000000024000000 : 0 0000000024000000-0000000028000000 : 0 0000000028000000-000000002c000000 : 0 000000002c000000-0000000030000000 : 0 0000000030000000-0000000034000000 : 0 0000000034000000-0000000038000000 : 0 0000000038000000-000000003c000000 : 0 000000003c000000-0000000040000000 : 0 0000000040000000-0000000044000000 : 0 0000000044000000-0000000048000000 : 0 0000000048000000-000000004c000000 : 0 000000004c000000-0000000050000000 : 0 0000000050000000-0000000054000000 : 0 0000000054000000-0000000058000000 : 0 0000000058000000-000000005c000000 : 0 000000005c000000-0000000060000000 : 0 0000000060000000-0000000064000000 : 0 0000000064000000-0000000068000000 : 0 0000000068000000-000000006c000000 : 0 000000006c000000-0000000070000000 : 0 0000000070000000-0000000074000000 : 0 0000000074000000-0000000078000000 : 0 0000000078000000-000000007c000000 : 0 000000007c000000-0000000080000000 : 0 0000000080000000-0000000084000000 : 0 0000000084000000-0000000088000000 : 0 0000000088000000-000000008c000000 : 0 000000008c000000-0000000090000000 : 0 0000000090000000-0000000094000000 : 0 0000000094000000-0000000098000000 : 0 0000000098000000-000000009c000000 : 0 000000009c000000-00000000a0000000 : 0 00000000a0000000-00000000a4000000 : 0 00000000a4000000-00000000a8000000 : 0 00000000a8000000-00000000ac000000 : 0 00000000ac000000-00000000b0000000 : 0 00000000b0000000-00000000b4000000 : 0 00000000b4000000-00000000b8000000 : 0 00000000b8000000-00000000bc000000 : 0 00000000bc000000-00000000c0000000 : 0 00000000c0000000-00000000c4000000 : 0 00000000c4000000-00000000c8000000 : 0 00000000c8000000-00000000cc000000 : 0 00000000cc000000-00000000d0000000 : 0 00000000d0000000-00000000d4000000 : 0 00000000d4000000-00000000d8000000 : 0 00000000d8000000-00000000dc000000 : 0 00000000dc000000-00000000e0000000 : 0 00000000e0000000-00000000e4000000 : 0 00000000e4000000-00000000e8000000 : 0 00000000e8000000-00000000ec000000 : 0 00000000ec000000-00000000f0000000 : 0 00000000f0000000-00000000f4000000 : 0 00000000f4000000-00000000f8000000 : 0 00000000f8000000-00000000fc000000 : 0 00000000fc000000-0000000100000000 : 0 0000000100000000-0000000104000000 : 0 0000000104000000-0000000108000000 : 0 0000000108000000-000000010c000000 : 0 000000010c000000-0000000110000000 : 0 0000000110000000-0000000114000000 : 0 0000000114000000-0000000118000000 : 0 0000000118000000-000000011c000000 : 0 000000011c000000-0000000120000000 : 0 0000000120000000-0000000124000000 : 0 0000000124000000-0000000128000000 : 0 0000000128000000-000000012c000000 : 0 000000012c000000-0000000130000000 : 0 0000000130000000-0000000134000000 : 0 0000000134000000-0000000138000000 : 0 0000000138000000-000000013c000000 : 0 000000013c000000-0000000140000000 : 0 0000000140000000-0000000144000000 : 0 0000000144000000-0000000148000000 : 0 0000000148000000-000000014c000000 : 0 000000014c000000-0000000150000000 : 0 0000000150000000-0000000154000000 : 0 0000000154000000-0000000158000000 : 0 0000000158000000-000000015c000000 : 0 000000015c000000-0000000160000000 : 0 0000000160000000-0000000164000000 : 0 0000000164000000-0000000168000000 : 0 0000000168000000-000000016c000000 : 0 000000016c000000-0000000170000000 : 0 0000000170000000-0000000174000000 : 0 0000000174000000-0000000178000000 : 0 0000000178000000-000000017c000000 : 0 000000017c000000-0000000180000000 : 0

Quoted 8 lines

0000000000000000-0000000008000000 : 0
get base memory ranges:96
exclude_range sorted exclude_range[0] start:0, end:1430000 exclude_range sorted exclude_range[1] start:74d0000, end:8000000 setup_memory_ranges memory_range[0] start:1430001, end:74cffff Could not find a free area of memory of faa448 bytes... Could not find a free area of memory of 142721d bytes...

Signature · 2 lines

Thanks
Dave