linux-kernel - [PATCH v2 03/24] arm64: Make cpu_logical

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Message-Id: <20201116204318.63987-4-dbrazdil@google.com>
Date:   Mon, 16 Nov 2020 20:42:57 +0000
From:   David Brazdil <dbrazdil@...gle.com>
To:     kvmarm@...ts.cs.columbia.edu
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Dennis Zhou <dennis@...nel.org>,
        Tejun Heo <tj@...nel.org>, Christoph Lameter <cl@...ux.com>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Quentin Perret <qperret@...gle.com>,
        Andrew Scull <ascull@...gle.com>,
        Andrew Walbran <qwandor@...gle.com>, kernel-team@...roid.com,
        David Brazdil <dbrazdil@...gle.com>
Subject: [PATCH v2 03/24] arm64: Make cpu_logical_map() take unsigned int

CPU index should never be negative. Change the signature of
(set_)cpu_logical_map to take an unsigned int.

Signed-off-by: David Brazdil <dbrazdil@...gle.com>
---
 arch/arm64/include/asm/smp.h | 4 ++--
 arch/arm64/kernel/setup.c    | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h
index 2e7f529ec5a6..bcb01ca15325 100644
--- a/arch/arm64/include/asm/smp.h
+++ b/arch/arm64/include/asm/smp.h
@@ -46,9 +46,9 @@ DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
  * Logical CPU mapping.
  */
 extern u64 __cpu_logical_map[NR_CPUS];
-extern u64 cpu_logical_map(int cpu);
+extern u64 cpu_logical_map(unsigned int cpu);
 
-static inline void set_cpu_logical_map(int cpu, u64 hwid)
+static inline void set_cpu_logical_map(unsigned int cpu, u64 hwid)
 {
 	__cpu_logical_map[cpu] = hwid;
 }
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 133257ffd859..2f2973bc67c7 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -276,7 +276,7 @@ arch_initcall(reserve_memblock_reserved_regions);
 
 u64 __cpu_logical_map[NR_CPUS] = { [0 ... NR_CPUS-1] = INVALID_HWID };
 
-u64 cpu_logical_map(int cpu)
+u64 cpu_logical_map(unsigned int cpu)
 {
 	return __cpu_logical_map[cpu];
 }
-- 
2.29.2.299.gdc1121823c-goog