From: Michael Bringmann <mwb@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Michael Ellerman <mpe@ellerman.id.au>,
Gustavo Walbon <gwalbon@linux.ibm.com>,
Paul Mackerras <paulus@samba.org>
Subject: [PATCH v2] Fix display of Maximum Memory
Date: Wed, 15 Jan 2020 08:53:59 -0600 [thread overview]
Message-ID: <5577aef8-1d5a-ca95-ff0a-9c7b5977e5bf@linux.ibm.com> (raw)
Correct overflow problem in calculation+display of Maximum Memory
value to syscfg where 32bits is insufficient.
Signed-off-by: Michael Bringmann <mwb@linux.ibm.com>
---
arch/powerpc/platforms/pseries/lparcfg.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c
index e33e8bc..f00411c 100644
--- a/arch/powerpc/platforms/pseries/lparcfg.c
+++ b/arch/powerpc/platforms/pseries/lparcfg.c
@@ -433,12 +433,12 @@ static void parse_em_data(struct seq_file *m)
static void maxmem_data(struct seq_file *m)
{
- unsigned long maxmem = 0;
+ u64 maxmem = 0;
- maxmem += drmem_info->n_lmbs * drmem_info->lmb_size;
- maxmem += hugetlb_total_pages() * PAGE_SIZE;
+ maxmem += (u64)drmem_info->n_lmbs * drmem_info->lmb_size;
+ maxmem += (u64)hugetlb_total_pages() * PAGE_SIZE;
- seq_printf(m, "MaxMem=%ld\n", maxmem);
+ seq_printf(m, "MaxMem=%llu\n", maxmem);
}
static int pseries_lparcfg_data(struct seq_file *m, void *v)
--
1.8.3.1
next reply other threads:[~2020-01-15 14:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-15 14:53 Michael Bringmann [this message]
2020-01-15 14:55 ` [PATCH v2] Fix display of Maximum Memory Christophe Leroy
2020-01-16 0:07 ` Tyrel Datwyler
2020-01-16 5:53 ` Michael Ellerman
2020-01-16 23:52 ` Michael Bringmann
2020-01-29 5:17 ` Michael Ellerman
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