diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-26 19:33:41 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-26 19:33:41 -0700 |
commit | 345671ea0f9258f410eb057b9ced9cefbbe5dc78 (patch) | |
tree | fe97ba3d27679789e6aa34e39b002ee64ce25412 /arch/um/kernel/physmem.c | |
parent | 4904008165c8a1c48602b8316139691b8c735e6e (diff) | |
parent | 22146c3ce98962436e401f7b7016a6f664c9ffb5 (diff) |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
- a few misc things
- ocfs2 updates
- most of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (132 commits)
hugetlbfs: dirty pages as they are added to pagecache
mm: export add_swap_extent()
mm: split SWP_FILE into SWP_ACTIVATED and SWP_FS
tools/testing/selftests/vm/map_fixed_noreplace.c: add test for MAP_FIXED_NOREPLACE
mm: thp: relocate flush_cache_range() in migrate_misplaced_transhuge_page()
mm: thp: fix mmu_notifier in migrate_misplaced_transhuge_page()
mm: thp: fix MADV_DONTNEED vs migrate_misplaced_transhuge_page race condition
mm/kasan/quarantine.c: make quarantine_lock a raw_spinlock_t
mm/gup: cache dev_pagemap while pinning pages
Revert "x86/e820: put !E820_TYPE_RAM regions into memblock.reserved"
mm: return zero_resv_unavail optimization
mm: zero remaining unavailable struct pages
tools/testing/selftests/vm/gup_benchmark.c: add MAP_HUGETLB option
tools/testing/selftests/vm/gup_benchmark.c: add MAP_SHARED option
tools/testing/selftests/vm/gup_benchmark.c: allow user specified file
tools/testing/selftests/vm/gup_benchmark.c: fix 'write' flag usage
mm/gup_benchmark.c: add additional pinning methods
mm/gup_benchmark.c: time put_page()
mm: don't raise MEMCG_OOM event due to failed high-order allocation
mm/page-writeback.c: fix range_cyclic writeback vs writepages deadlock
...
Diffstat (limited to 'arch/um/kernel/physmem.c')
-rw-r--r-- | arch/um/kernel/physmem.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c index f02596e9931d..296a91a04598 100644 --- a/arch/um/kernel/physmem.c +++ b/arch/um/kernel/physmem.c @@ -5,6 +5,7 @@ #include <linux/module.h> #include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/mm.h> #include <linux/pfn.h> #include <asm/page.h> @@ -80,28 +81,23 @@ void __init setup_physmem(unsigned long start, unsigned long reserve_end, unsigned long len, unsigned long long highmem) { unsigned long reserve = reserve_end - start; - unsigned long pfn = PFN_UP(__pa(reserve_end)); - unsigned long delta = (len - reserve) >> PAGE_SHIFT; - unsigned long offset, bootmap_size; - long map_size; + long map_size = len - reserve; int err; - offset = uml_reserved - uml_physmem; - map_size = len - offset; if(map_size <= 0) { os_warn("Too few physical memory! Needed=%lu, given=%lu\n", - offset, len); + reserve, len); exit(1); } physmem_fd = create_mem_file(len + highmem); - err = os_map_memory((void *) uml_reserved, physmem_fd, offset, + err = os_map_memory((void *) reserve_end, physmem_fd, reserve, map_size, 1, 1, 1); if (err < 0) { os_warn("setup_physmem - mapping %ld bytes of memory at 0x%p " "failed - errno = %d\n", map_size, - (void *) uml_reserved, err); + (void *) reserve_end, err); exit(1); } @@ -113,9 +109,11 @@ void __init setup_physmem(unsigned long start, unsigned long reserve_end, os_write_file(physmem_fd, __syscall_stub_start, PAGE_SIZE); os_fsync_file(physmem_fd); - bootmap_size = init_bootmem(pfn, pfn + delta); - free_bootmem(__pa(reserve_end) + bootmap_size, - len - bootmap_size - reserve); + memblock_add(__pa(start), len + highmem); + memblock_reserve(__pa(start), reserve); + + min_low_pfn = PFN_UP(__pa(reserve_end)); + max_low_pfn = min_low_pfn + (map_size >> PAGE_SHIFT); } int phys_mapping(unsigned long phys, unsigned long long *offset_out) |