From: Vladimir Murzin vladimir.murzin@arm.com
[ Upstream commit 7202216a6f34d571a22274e729f841256bf8b1ef ]
__secondary_data used to reside in r7 around call to PROCINFO_INITFUNC. After commit 95731b8ee63e ("ARM: 9059/1: cache-v7: get rid of mini-stack") r7 is used as a scratch register, so we have to reload __secondary_data before we setup the stack pointer.
Fixes: 95731b8ee63e ("ARM: 9059/1: cache-v7: get rid of mini-stack") Signed-off-by: Vladimir Murzin vladimir.murzin@arm.com Signed-off-by: Russell King (Oracle) rmk+kernel@armlinux.org.uk Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/kernel/head-nommu.S | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index 0fc814bbc34b1..8796a69c78e00 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S @@ -114,6 +114,7 @@ ENTRY(secondary_startup) add r12, r12, r10 ret r12 1: bl __after_proc_init + ldr r7, __secondary_data @ reload r7 ldr sp, [r7, #12] @ set up the stack pointer mov fp, #0 b secondary_start_kernel