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author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 19:08:28 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 19:08:28 +0200 |
commit | 14726903c835101cd8d0a703b609305094350d61 (patch) | |
tree | 5cdcf5d2f06ca14be76efd33a4de0e3b28a70de0 /arch/arm64/mm/init.c | |
parent | Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi (diff) | |
parent | mm/madvise: add MADV_WILLNEED to process_madvise() (diff) | |
download | linux-14726903c835101cd8d0a703b609305094350d61.tar.xz linux-14726903c835101cd8d0a703b609305094350d61.zip |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
"173 patches.
Subsystems affected by this series: ia64, ocfs2, block, and mm (debug,
pagecache, gup, swap, shmem, memcg, selftests, pagemap, mremap,
bootmem, sparsemem, vmalloc, kasan, pagealloc, memory-failure,
hugetlb, userfaultfd, vmscan, compaction, mempolicy, memblock,
oom-kill, migration, ksm, percpu, vmstat, and madvise)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (173 commits)
mm/madvise: add MADV_WILLNEED to process_madvise()
mm/vmstat: remove unneeded return value
mm/vmstat: simplify the array size calculation
mm/vmstat: correct some wrong comments
mm/percpu,c: remove obsolete comments of pcpu_chunk_populated()
selftests: vm: add COW time test for KSM pages
selftests: vm: add KSM merging time test
mm: KSM: fix data type
selftests: vm: add KSM merging across nodes test
selftests: vm: add KSM zero page merging test
selftests: vm: add KSM unmerge test
selftests: vm: add KSM merge test
mm/migrate: correct kernel-doc notation
mm: wire up syscall process_mrelease
mm: introduce process_mrelease system call
memblock: make memblock_find_in_range method private
mm/mempolicy.c: use in_task() in mempolicy_slab_node()
mm/mempolicy: unify the create() func for bind/interleave/prefer-many policies
mm/mempolicy: advertise new MPOL_PREFERRED_MANY
mm/hugetlb: add support for mempolicy MPOL_PREFERRED_MANY
...
Diffstat (limited to 'arch/arm64/mm/init.c')
-rw-r--r-- | arch/arm64/mm/init.c | 36 |
1 files changed, 11 insertions, 25 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index edc8e950bada..b16be52233c6 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -74,6 +74,7 @@ phys_addr_t arm64_dma_phys_limit __ro_after_init; static void __init reserve_crashkernel(void) { unsigned long long crash_base, crash_size; + unsigned long long crash_max = arm64_dma_phys_limit; int ret; ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(), @@ -84,33 +85,18 @@ static void __init reserve_crashkernel(void) crash_size = PAGE_ALIGN(crash_size); - if (crash_base == 0) { - /* Current arm64 boot protocol requires 2MB alignment */ - crash_base = memblock_find_in_range(0, arm64_dma_phys_limit, - crash_size, SZ_2M); - if (crash_base == 0) { - pr_warn("cannot allocate crashkernel (size:0x%llx)\n", - crash_size); - return; - } - } else { - /* User specifies base address explicitly. */ - if (!memblock_is_region_memory(crash_base, crash_size)) { - pr_warn("cannot reserve crashkernel: region is not memory\n"); - return; - } + /* User specifies base address explicitly. */ + if (crash_base) + crash_max = crash_base + crash_size; - if (memblock_is_region_reserved(crash_base, crash_size)) { - pr_warn("cannot reserve crashkernel: region overlaps reserved memory\n"); - return; - } - - if (!IS_ALIGNED(crash_base, SZ_2M)) { - pr_warn("cannot reserve crashkernel: base address is not 2MB aligned\n"); - return; - } + /* Current arm64 boot protocol requires 2MB alignment */ + crash_base = memblock_phys_alloc_range(crash_size, SZ_2M, + crash_base, crash_max); + if (!crash_base) { + pr_warn("cannot allocate crashkernel (size:0x%llx)\n", + crash_size); + return; } - memblock_reserve(crash_base, crash_size); pr_info("crashkernel reserved: 0x%016llx - 0x%016llx (%lld MB)\n", crash_base, crash_base + crash_size, crash_size >> 20); |