This is a note to let you know that I've just added the patch titled MIPS: paravirt: Fix undefined reference to smp_bootstrap to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mips-paravirt-fix-undefined-reference-to-smp_bootstrap.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 951c39cd3bc0aedf67fbd8fb4b9380287e6205d1 Mon Sep 17 00:00:00 2001 From: Matt Redfearn <matt.redfearn@xxxxxxxxxx> Date: Mon, 5 Sep 2016 15:43:40 +0100 Subject: MIPS: paravirt: Fix undefined reference to smp_bootstrap From: Matt Redfearn <matt.redfearn@xxxxxxxxxx> 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@xxxxxxxxxx> Cc: linux-mips@xxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Patchwork: https://patchwork.linux-mips.org/patch/14212/ Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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 Patches currently in stable-queue which might be from matt.redfearn@xxxxxxxxxx are queue-4.4/mips-smp-fix-possibility-of-deadlock-when-bringing-cpus-online.patch queue-4.4/mips-paravirt-fix-undefined-reference-to-smp_bootstrap.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html