linux-kernel - [PATCH 2/3] ARM: psci: Fix secondary core boot with THUMB2

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Message-Id: <20180927192711.26455-3-f.fainelli@gmail.com>
Date:   Thu, 27 Sep 2018 12:27:10 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Brian Norris <computersforpeace@...il.com>,
        Gregory Fong <gregory.0xf0@...il.com>,
        bcm-kernel-feedback-list@...adcom.com (maintainer:BROADCOM BCM7XXX ARM
        ARCHITECTURE), Rob Herring <robh@...nel.org>,
        Doug Berger <opendmb@...il.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/3] ARM: psci: Fix secondary core boot with THUMB2_KERNEL

When THUMB2_KERNEL is enabled, we would be setting the secondary core's
entry point to secondary_startup() which is already Thumb2 code, utilize
secondary_startup_arm() which takes care of doing the mode switching for
us.

Fixes: 05774088391c ("arm: introduce psci_smp_ops")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 arch/arm/kernel/psci_smp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/kernel/psci_smp.c b/arch/arm/kernel/psci_smp.c
index cb3fcaeb2233..547a11b065d2 100644
--- a/arch/arm/kernel/psci_smp.c
+++ b/arch/arm/kernel/psci_smp.c
@@ -47,13 +47,13 @@
  *
  */
 
-extern void secondary_startup(void);
+extern void secondary_startup_arm(void);
 
 static int psci_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
 	if (psci_ops.cpu_on)
 		return psci_ops.cpu_on(cpu_logical_map(cpu),
-					virt_to_idmap(&secondary_startup));
+					virt_to_idmap(&secondary_startup_arm));
 	return -ENODEV;
 }
 
-- 
2.17.1