From: Matt Redfearn <matt.redfearn@imgtec.com>
To: Ralf Baechle <ralf@linux-mips.org>, <linux-mips@linux-mips.org>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>, <linux-kernel@vger.kernel.org>
Subject: [PATCH] MIPS: paravirt: Fix undefined reference to smp_bootstrap
Date: Mon, 5 Sep 2016 15:43:40 +0100 [thread overview]
Message-ID: <1473086620-21007-1-git-send-email-matt.redfearn@imgtec.com> (raw)
If the paravirt machine is compiles without CONFIG_SMP, the following
linker error occurs
arch/mips/kernel/head.o: In function `kernel_entry':
(.ref.text+0x10): undefined reference to `smp_bootstrap'
due to the kernel entry macro always including SMP startup code.
Wrap this code in CONFIG_SMP to fix the error.
Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
---
arch/mips/include/asm/mach-paravirt/kernel-entry-init.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h b/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h
index 2f82bfa3a773..c9f5769dfc8f 100644
--- a/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-paravirt/kernel-entry-init.h
@@ -11,11 +11,13 @@
#define CP0_EBASE $15, 1
.macro kernel_entry_setup
+#ifdef CONFIG_SMP
mfc0 t0, CP0_EBASE
andi t0, t0, 0x3ff # CPUNum
beqz t0, 1f
# CPUs other than zero goto smp_bootstrap
j smp_bootstrap
+#endif /* CONFIG_SMP */
1:
.endm
--
2.7.4
next reply other threads:[~2016-09-05 14:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-05 14:43 Matt Redfearn [this message]
2016-09-13 14:49 ` Ralf Baechle
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