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    Subject[PATCH AUTOSEL 5.5 464/542] powerpc/pseries/lparcfg: Fix display of Maximum Memory
    Date
    From: Michael Bringmann <mwb@linux.ibm.com>

    [ Upstream commit f1dbc1c5c70d0d4c60b5d467ba941fba167c12f6 ]

    Correct overflow problem in calculation and display of Maximum Memory
    value to syscfg.

    Signed-off-by: Michael Bringmann <mwb@linux.ibm.com>
    [mpe: Only n_lmbs needs casting to unsigned long]
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
    Link: https://lore.kernel.org/r/5577aef8-1d5a-ca95-ff0a-9c7b5977e5bf@linux.ibm.com
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/powerpc/platforms/pseries/lparcfg.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c
    index e33e8bc4b69bd..38c306551f76b 100644
    --- a/arch/powerpc/platforms/pseries/lparcfg.c
    +++ b/arch/powerpc/platforms/pseries/lparcfg.c
    @@ -435,10 +435,10 @@ static void maxmem_data(struct seq_file *m)
    {
    unsigned long maxmem = 0;

    - maxmem += drmem_info->n_lmbs * drmem_info->lmb_size;
    + maxmem += (unsigned long)drmem_info->n_lmbs * drmem_info->lmb_size;
    maxmem += hugetlb_total_pages() * PAGE_SIZE;

    - seq_printf(m, "MaxMem=%ld\n", maxmem);
    + seq_printf(m, "MaxMem=%lu\n", maxmem);
    }

    static int pseries_lparcfg_data(struct seq_file *m, void *v)
    --
    2.20.1
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