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    Subject[PATCH 5.4 067/152] pseries: Fix 64 bit logical memory block panic
    Date
    From: Anton Blanchard <anton@ozlabs.org>

    commit 89c140bbaeee7a55ed0360a88f294ead2b95201b upstream.

    Booting with a 4GB LMB size causes us to panic:

    qemu-system-ppc64: OS terminated: OS panic:
    Memory block size not suitable: 0x0

    Fix pseries_memory_block_size() to handle 64 bit LMBs.

    Cc: stable@vger.kernel.org
    Signed-off-by: Anton Blanchard <anton@ozlabs.org>
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
    Link: https://lore.kernel.org/r/20200715000820.1255764-1-anton@ozlabs.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/powerpc/platforms/pseries/hotplug-memory.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/powerpc/platforms/pseries/hotplug-memory.c
    +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
    @@ -27,7 +27,7 @@ static bool rtas_hp_event;
    unsigned long pseries_memory_block_size(void)
    {
    struct device_node *np;
    - unsigned int memblock_size = MIN_MEMORY_BLOCK_SIZE;
    + u64 memblock_size = MIN_MEMORY_BLOCK_SIZE;
    struct resource r;

    np = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");

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