linux-kernel - [PATCH AUTOSEL 4.14 012/115] arm64/numa: Report correct memblock range for the dummy node

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Date:   Tue, 12 Nov 2019 20:54:39 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        Punit Agrawal <punit.agrawal@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.14 012/115] arm64/numa: Report correct memblock range for the dummy node

From: Anshuman Khandual <anshuman.khandual@....com>

[ Upstream commit 77cfe950901e5c13aca2df6437a05f39dd9a929b ]

The dummy node ID is marked into all memory ranges on the system. So the
dummy node really extends the entire memblock.memory. Hence report correct
extent information for the dummy node using memblock range helper functions
instead of the range [0LLU, PFN_PHYS(max_pfn) - 1)].

Fixes: 1a2db30034 ("arm64, numa: Add NUMA support for arm64 platforms")
Acked-by: Punit Agrawal <punit.agrawal@....com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/mm/numa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index dad128ba98bf8..e9c843e0c1727 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c
@@ -419,7 +419,7 @@ static int __init dummy_numa_init(void)
 	if (numa_off)
 		pr_info("NUMA disabled\n"); /* Forced off on command line. */
 	pr_info("Faking a node at [mem %#018Lx-%#018Lx]\n",
-		0LLU, PFN_PHYS(max_pfn) - 1);
+		memblock_start_of_DRAM(), memblock_end_of_DRAM() - 1);
 
 	for_each_memblock(memory, mblk) {
 		ret = numa_add_memblk(0, mblk->base, mblk->base + mblk->size);
-- 
2.20.1