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s390/mem_detect: use SCLP info for continuous memory detection

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When neither SCLP storage info, nor z/VM diag260 "storage configuration"
are available assume a continuous online memory of size specified by
SCLP info.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Vasily Gorbik 2018-04-11 18:54:40 +02:00 committed by Martin Schwidefsky
parent 6e98e64329
commit cd45c99561
2 changed files with 8 additions and 2 deletions
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7
arch/s390/boot/mem_detect.c
View File

@ -184,8 +184,13 @@ void detect_memory(void)
return; return;
} }
if (max_physmem_end) {
add_mem_detect_block(0, max_physmem_end);
mem_detect.info_source = MEM_DETECT_SCLP_READ_INFO;
return;
}
scan_memory(rzm); scan_memory(rzm);
mem_detect.info_source = MEM_DETECT_TPROT_LOOP; mem_detect.info_source = MEM_DETECT_TPROT_LOOP;
if (!max_physmem_end)
max_physmem_end = get_mem_detect_end(); max_physmem_end = get_mem_detect_end();
} }

1
arch/s390/include/asm/mem_detect.h
View File

@ -8,6 +8,7 @@ enum mem_info_source {
MEM_DETECT_NONE = 0, MEM_DETECT_NONE = 0,
MEM_DETECT_SCLP_STOR_INFO, MEM_DETECT_SCLP_STOR_INFO,
MEM_DETECT_DIAG260, MEM_DETECT_DIAG260,
MEM_DETECT_SCLP_READ_INFO,
MEM_DETECT_TPROT_LOOP MEM_DETECT_TPROT_LOOP
}; };