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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/startup.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/startup.c')
| -rw-r--r-- | arch/s390/boot/startup.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c index f5a7545d3c13..11413f0baabc 100644 --- a/arch/s390/boot/startup.c +++ b/arch/s390/boot/startup.c @@ -304,7 +304,7 @@ void startup_kernel(void) setup_ident_map_size(max_physmem_end); setup_vmalloc_size(); asce_limit = setup_kernel_memory_layout(); - mem_detect_truncate(ident_map_size); + mem_detect_set_usable_limit(ident_map_size); if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && kaslr_enabled) { random_lma = get_random_base(safe_addr); |