linux-kernel - [PATCH AUTOSEL 3.18 08/18] xtensa: SMP: mark each possible CPU as present

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Message-Id: <20190223211135.203082-8-sashal@kernel.org>
Date:   Sat, 23 Feb 2019 16:11:25 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Max Filippov <jcmvbkbc@...il.com>, Sasha Levin <sashal@...nel.org>,
        linux-xtensa@...ux-xtensa.org
Subject: [PATCH AUTOSEL 3.18 08/18] xtensa: SMP: mark each possible CPU as present

From: Max Filippov <jcmvbkbc@...il.com>

[ Upstream commit 8b1c42cdd7181200dc1fff39dcb6ac1a3fac2c25 ]

Otherwise it is impossible to enable CPUs after booting with 'maxcpus'
parameter.

Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/xtensa/kernel/smp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
index 545144d1431d5..0e34c1ed4aa8f 100644
--- a/arch/xtensa/kernel/smp.c
+++ b/arch/xtensa/kernel/smp.c
@@ -80,7 +80,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	unsigned i;
 
-	for (i = 0; i < max_cpus; ++i)
+	for_each_possible_cpu(i)
 		set_cpu_present(i, true);
 }
 
-- 
2.19.1