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    Subject[PATCH 4.14 005/137] x86/numa_emulation: Fix emulated-to-physical node mapping
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Dan Williams <dan.j.williams@intel.com>

    [ Upstream commit 3b6c62f363a19ce82bf378187ab97c9dc01e3927 ]

    Without this change the distance table calculation for emulated nodes
    may use the wrong numa node and report an incorrect distance.

    Signed-off-by: Dan Williams <dan.j.williams@intel.com>
    Cc: David Rientjes <rientjes@google.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Wei Yang <richard.weiyang@gmail.com>
    Cc: linux-mm@kvack.org
    Link: http://lkml.kernel.org/r/153089328103.27680.14778434392225818887.stgit@dwillia2-desk3.amr.corp.intel.com
    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    arch/x86/mm/numa_emulation.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/x86/mm/numa_emulation.c
    +++ b/arch/x86/mm/numa_emulation.c
    @@ -61,7 +61,7 @@ static int __init emu_setup_memblk(struc
    eb->nid = nid;

    if (emu_nid_to_phys[nid] == NUMA_NO_NODE)
    - emu_nid_to_phys[nid] = nid;
    + emu_nid_to_phys[nid] = pb->nid;

    pb->start += size;
    if (pb->start >= pb->end) {

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