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| author | Kefeng Wang <[email protected]> | 2021-11-05 20:39:44 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-11-06 20:30:37 +0000 |
| commit | 09cea6195073ee1d0f076d907d9249045757245d (patch) | |
| tree | db3a9bc956fca20c2ce09b276478d234b8af0396 /lib/test_vmalloc.c | |
| parent | vmalloc: choose a better start address in vm_area_register_early() (diff) | |
| download | kernel-09cea6195073ee1d0f076d907d9249045757245d.tar.gz kernel-09cea6195073ee1d0f076d907d9249045757245d.zip | |
arm64: support page mapping percpu first chunk allocator
Percpu embedded first chunk allocator is the firstly option, but it
could fails on ARM64, eg,
percpu: max_distance=0x5fcfdc640000 too large for vmalloc space 0x781fefff0000
percpu: max_distance=0x600000540000 too large for vmalloc space 0x7dffb7ff0000
percpu: max_distance=0x5fff9adb0000 too large for vmalloc space 0x5dffb7ff0000
then we could get
WARNING: CPU: 15 PID: 461 at vmalloc.c:3087 pcpu_get_vm_areas+0x488/0x838
and the system could not boot successfully.
Let's implement page mapping percpu first chunk allocator as a fallback
to the embedding allocator to increase the robustness of the system.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kefeng Wang <[email protected]>
Reviewed-by: Catalin Marinas <[email protected]>
Cc: Andrey Konovalov <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Marco Elver <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/test_vmalloc.c')
0 files changed, 0 insertions, 0 deletions