From mboxrd@z Thu Jan 1 00:00:00 1970 From: guohanjun@huawei.com (Hanjun Guo) Date: Fri, 21 Oct 2016 16:13:56 +0800 Subject: [PATCH v2 2/2] arm64/numa: fix incorrect log for memory-less node In-Reply-To: <1477037636-10077-1-git-send-email-guohanjun@huawei.com> References: <1477037636-10077-1-git-send-email-guohanjun@huawei.com> Message-ID: <1477037636-10077-2-git-send-email-guohanjun@huawei.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Hanjun Guo When booting on NUMA system with memory-less node (no memory dimm on this memory controller), the print for setup_node_data() is incorrect: NUMA: Initmem setup node 2 [mem 0x00000000-0xffffffffffffffff] It can be fixed by printing [mem 0x00000000-0x00000000] when end_pfn is 0, but print will be more useful. Fixes: 1a2db300348b ("arm64, numa: Add NUMA support for arm64 platforms.") Signed-off-by: Hanjun Guo Cc: Catalin Marinas Cc: Ganapatrao Kulkarni Cc: Lorenzo Pieralisi Cc: Mark Rutland Cc: Will Deacon Cc: Yisheng Xie --- arch/arm64/mm/numa.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c index 9a71d06..4b32168 100644 --- a/arch/arm64/mm/numa.c +++ b/arch/arm64/mm/numa.c @@ -223,8 +223,11 @@ static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn) void *nd; int tnid; - pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n", - nid, start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1); + if (start_pfn < end_pfn) + pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n", nid, + start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1); + else + pr_info("Initmem setup node %d []\n", nid); nd_pa = memblock_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid); nd = __va(nd_pa); -- 1.7.12.4