From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Matt Redfearn <matt.redfearn@imgtec.com>,
linux-mips@linux-mips.org, Ralf Baechle <ralf@linux-mips.org>
Subject: [PATCH 4.4 67/73] MIPS: paravirt: Fix undefined reference to smp_bootstrap
Date: Wed, 28 Sep 2016 11:05:37 +0200 [thread overview]
Message-ID: <20160928090438.632703781@linuxfoundation.org> (raw)
In-Reply-To: <20160928090434.509091655@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matt Redfearn <matt.redfearn@imgtec.com>
commit 951c39cd3bc0aedf67fbd8fb4b9380287e6205d1 upstream.
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>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14212/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/include/asm/mach-paravirt/kernel-entry-init.h | 2 ++
1 file changed, 2 insertions(+)
--- 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
prev parent reply other threads:[~2016-09-28 9:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160928090434.509091655@linuxfoundation.org>
2016-09-28 9:05 ` [PATCH 4.4 61/73] MIPS: Fix pre-r6 emulation FPU initialisation Greg Kroah-Hartman
2016-09-28 9:05 ` [PATCH 4.4 63/73] MIPS: vDSO: Fix Malta EVA mapping to vDSO page structs Greg Kroah-Hartman
2016-09-28 9:05 ` [PATCH 4.4 64/73] MIPS: Remove compact branch policy Kconfig entries Greg Kroah-Hartman
2016-09-28 9:05 ` [PATCH 4.4 65/73] MIPS: Avoid a BUG warning during prctl(PR_SET_FP_MODE, ...) Greg Kroah-Hartman
2016-09-28 9:05 ` [PATCH 4.4 66/73] MIPS: Add a missing ".set pop" in an early commit Greg Kroah-Hartman
2016-09-28 9:05 ` Greg Kroah-Hartman [this message]
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