From: John Garry <john.g.garry@oracle.com>
To: chenhuacai@kernel.org, kernel@xen0n.name,
jiaxun.yang@flygoat.com, tsbogend@alpha.franken.de,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, hpa@zytor.com, luto@kernel.org,
peterz@infradead.org, arnd@arndb.de, x86@kernel.org
Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-mips@vger.kernel.org, linux-arch@vger.kernel.org,
vulab@iscas.ac.cn, gregkh@linuxfoundation.org, rafael@kernel.org,
dakr@kernel.org, John Garry <john.g.garry@oracle.com>
Subject: [PATCH 3/4] MIPS: Loongson: Make cpumask_of_node() robust against NUMA_NO_NODE
Date: Mon, 5 Jan 2026 10:05:46 +0000 [thread overview]
Message-ID: <20260105100547.287332-4-john.g.garry@oracle.com> (raw)
In-Reply-To: <20260105100547.287332-1-john.g.garry@oracle.com>
The arch definition of cpumask_of_node() cannot handle NUMA_NO_NODE - which
is a valid index - so add a check for this.
Signed-off-by: John Garry <john.g.garry@oracle.com>
---
arch/mips/include/asm/mach-loongson64/topology.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/mips/include/asm/mach-loongson64/topology.h b/arch/mips/include/asm/mach-loongson64/topology.h
index 3414a1fd17835..e897dddc1366e 100644
--- a/arch/mips/include/asm/mach-loongson64/topology.h
+++ b/arch/mips/include/asm/mach-loongson64/topology.h
@@ -7,7 +7,9 @@
#define cpu_to_node(cpu) (cpu_logical_map(cpu) >> 2)
extern cpumask_t __node_cpumask[];
-#define cpumask_of_node(node) (&__node_cpumask[node])
+#define cpumask_of_node(node) ((node) == NUMA_NO_NODE ? \
+ cpu_all_mask : \
+ &__node_cpumask[node])
struct pci_bus;
extern int pcibus_to_node(struct pci_bus *);
--
2.43.5
next prev parent reply other threads:[~2026-01-05 10:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-05 10:05 [PATCH 0/4] Make cpumask_of_node() robust against NUMA_NO_NODE John Garry
2026-01-05 10:05 ` [PATCH 1/4] include/asm-generic/topology.h: Remove unused definition of cpumask_of_node() John Garry
2026-01-05 10:05 ` [PATCH 2/4] LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE John Garry
2026-01-05 12:54 ` Huacai Chen
2026-01-05 14:09 ` John Garry
2026-01-05 10:05 ` John Garry [this message]
2026-01-05 10:05 ` [PATCH 4/4] x86/cpu/topology: " John Garry
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