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| author | Vasily Gorbik <gor@linux.ibm.com> | 2023-02-10 17:47:06 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-02-14 13:45:40 +0300 |
| commit | af0735269b72333d06e9677cb843bf5ce689a38c (patch) | |
| tree | 02604174585bae1e3ef0225289090f0c02a57597 /arch/s390/boot/vmem.c | |
| parent | 55d169c87db1d0faa95313809f18f8b49cafdd75 (diff) | |
| download | linux-af0735269b72333d06e9677cb843bf5ce689a38c.tar.xz | |
s390/mem_detect: do not truncate online memory ranges info
Commit bf64f0517e5d ("s390/mem_detect: handle online memory limit
just once") introduced truncation of mem_detect online ranges
based on identity mapping size. For kdump case however the full
set of online memory ranges has to be feed into memblock_physmem_add
so that crashed system memory could be extracted.
Instead of truncating introduce a "usable limit" which is respected by
mem_detect api. Also add extra online memory ranges iterator which still
provides full set of online memory ranges disregarding the "usable limit".
Fixes: bf64f0517e5d ("s390/mem_detect: handle online memory limit just once")
Reported-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Tested-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/boot/vmem.c')
| -rw-r--r-- | arch/s390/boot/vmem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/boot/vmem.c b/arch/s390/boot/vmem.c index 4e54357ccd00..4d1d0d8e99cb 100644 --- a/arch/s390/boot/vmem.c +++ b/arch/s390/boot/vmem.c @@ -252,7 +252,7 @@ void setup_vmem(unsigned long asce_limit) */ pgtable_populate_init(); pgtable_populate(0, sizeof(struct lowcore), POPULATE_ONE2ONE); - for_each_mem_detect_block(i, &start, &end) + for_each_mem_detect_usable_block(i, &start, &end) pgtable_populate(start, end, POPULATE_ONE2ONE); pgtable_populate(__abs_lowcore, __abs_lowcore + sizeof(struct lowcore), POPULATE_ABS_LOWCORE); |